Expert 2026 Dual Occupancy & Townhouse Guide | Swarup Dutta, Registered Planner
250+ permits managed. Zero guesswork. Build with confidence using Swarup Dutta’s 2026 Dual Occupancy guide for data-driven design and expert planning insights.
Feasibility Reports: My approach is simple: I tell you the truth. I evaluate the site’s potential upfront so you know if a project is feasible before you buy.
Interactive Profitability: Our unique and practical Ai developed platform focuses on the "highest and best use" of the site.
"Frank and Fearless" Advice: Swarup is known for telling clients when a project won't work to save them money.
End-to-End Service: We handle the site from initial feasibility sketch design, town planning drawings and inhouse planning report to the final building permit.
A Clearer Path to Dual Occupancy in 2026
Your Project, Protected by Planning Intelligence
Most people see a block of land or a backyard; I see the legal and financial roadmap required to unlock its potential. With 250+ permits managed across Victoria, my role is to ensure your investment is never left to chance.
I don't just offer you "design services"—I provide you a foundation of Planning Intelligence. In 2026, a beautiful drawing isn’t enough to guarantee a permit or a profit. You need a path of least resistance, and I’m here to guide you through it- whether it's a backyard subdivision, a duplex or ten townhouses.
A Partnership Built on Certainty
Choosing to develop land is a significant milestone. You deserve a partner who values your capital as much as you do.
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Guided by Experience: Navigate the 2026 market with insights from over 250 managed permits. I know what Council is looking for before we even submit.
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Data-Backed Decisions: We benchmark your project against real-world data and current industry sentiment, so you can move forward with a clear, realistic view of costs and timing.
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The Planning-Led Advantage: By leading with expert planning rather than just aesthetics, we resolve the "hidden" puzzles of costs and capability early, saving you time and stress.
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Strategic Peace of Mind: My framework is designed to de-risk your journey. From the first sketch to the final approval, every move is informed by planning reality.
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Trusted Across the Industry: From first-time homeowners to seasoned builders and government agencies, I am proud to be the steady hand that professionals rely on.
"My goal is simple: to treat your project with the same technical rigour and financial care as if it were my own. When we work together, you aren't just getting a designer—you’re getting a Registered Planner dedicated to your success." —
Swarup Dutta B.Arch
A Personal Approach to Subdividing Your Backyard
"Can you subdivide my backyard?" is a question often asked. Deciding to subdivide isn’t just a property play; it’s about unlocking the true potential of the home you love. Swarup has walked this path personally, having successfully subdivided his own home. He understands the emotional and financial weight of the process, and he knows exactly how to navigate the hurdles because he’s cleared them himself.
Whether you're looking to downsize on your own land or create an investment for the future, Swarup provides a warm, hands-on partnership. He’ll guide you through every nuance of a dual occupancy project, from that first "is this possible?" conversation to the moment you receive final approval.
He has created a critical checklist below. to determine if your backyard is suitable for a subdivision.
Real-World Grit. Proven Results.
Swarup doesn’t just consult on development; he’s lived the struggle. He forged his expertise navigating his own dual occupancy subdivision through fierce resistance from wealthy neighbours and stubborn planning departments.
Today, he still sees the same friction: simple applications bogged down by endless objections and officers demanding excessive data.
He knows how to break the deadlock. After a council refused one of the projects he managed due to 82 objectors, Swarup took it to VCAT. Following four grueling days slugging it out against a top planning lawyer, he didn't just win the permit—he forced a change to the Planning Scheme itself.
Turning "No" into Life-Changing Assets
Swarup’s grit turned a "non-residential" 3,300sqm waterfront lot into a goldmine. By escalating his case to a 12-person management board, he overturned a flat refusal and watched the land value soar. It’s proof that with the right strategy, even the most "unusable" land can become a massive win.
Today, Swarup applies that same relentless determination to every project he takes on—navigating the red tape so you don't have to.
Duplex-Side by Side dual occupancy
Dual Occupancy Duplex
Side-by-side dual occupancies provide expansive floor plans and premium street presence. Swarup successfully secured approval for a large duplex on irregular land, expertly navigating a 1m diameter stormwater pipe easement. Unlike the neighbouring site—where a duplex was refused, forcing a smaller tandem build—our strategic design and negotiation maximised both site yield and property value.
Backyard Dual Occupancy
Typical Dual Occupancy
Tandem dual occupancies involve one dwelling positioned behind another, typically via a common driveway. Despite significant slope and vegetation constraints, we successfully navigated the Planning and Building Permit process, enabling our client to owner-build their project in record time.
Corner Development
Corner lot development
Corner lots provide a distinct street presence and often yield larger, more functional units than traditional tandem developments. On this compact site, Swarup expertly managed street tree constraints and neighbor objections. His strategic negotiation secured a 4-townhouse planning approval, delivering a successful Council outcome and maximizing the site’s full potential.
As a leading Dual Occupancy and backyard subdivision specialist, Swarup Dutta brings a unique blend of technical mastery and innovative technology to the Victorian property market. In 2026, navigating the complexities of urban densification requires more than just a drawing; it requires a data-driven strategy. Contact him for a Free High Level Site assessment.
Why "Planning-First" Beats "Design-First"
Most homeowners start with a Design-First approach. They fall in love with a floor plan, then spend months (and thousands) trying to "force" it through Council.
The AuArchitecture Way is "Planning-First." We reverse-engineer your project from the Victorian Planning Provisions (VPP). We identify the "Hidden Killers"—like mandatory garden areas, tree protection zones, and restrictive title covenants—before a single line is drawn.
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Forensic Due Diligence: We identify "Deal Breakers" on Day 1.
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Envelope Engineering: We map the buildable box to ensure ResCode compliance.
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Yield Optimisation: We design to the legal limit to maximise your ROI.
The Site Verdict: Data-Driven Intelligence Before You Commit Capital.
In the 2026 property market, guessing is the most expensive mistake you can make. Before you engage a builder or sign a contract, you need a Verdict.
Our Advanced Feasibility Assessment isn't just a sketch; it is a comprehensive financial and regulatory roadmap. We utilise proprietary data from over 250+ planning experience to strip away the "best-case scenario" fluff and give you the cold, hard numbers.
The best part? You don't need to spend thousands on land surveys or architectural drafting to get started. We use forensic planning data to unlock the answers today.
What is included in your Advanced Feasibility Report:
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Maximum Site Yield: We define the absolute limit of what the site can support. We don't just "guess" two units; we determine if a third is possible or if a side-by-side duplex will trigger a statutory refusal.
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Volumetric Site Analysis: Based on 2026 ResCode setbacks and overlays, we provide approximate floor areas. You’ll know exactly how many square metres of "sellable air" your land holds.
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2026 Cost Benchmarks: We factor in the current Victorian trade landscape. From 3-metre ceiling premiums to pitched roof labor costs, our construction estimates are based on real-world 2026 rates, not outdated "per square" averages.
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Cashflow & P&L Summary: A project isn't successful just because it's built; it's successful because it's profitable. We provide a projected Profit and Loss summary, including estimated interest holding costs and professional fees.
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The Breakeven Point: We calculate exactly what your "walk-away" sale price or rental yield needs to be to clear your debt and secure your profit margin.
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The Planning Roadmap: A realistic, month-by-month timeline. We map out the path through Council, the likely RFI (Request for Further Information) periods, and the final Subdivision process.
The charts shown above are indicative and subject to change
Why this matters?
Most feasibility studies are done after the design is finished. By then, it’s too late to change the strategy. By putting the financials and planning first, you ensure that the design we eventually create is built for one thing: Market Performance.
Not sure if your site is a Dual-Occ goldmine or a liability?
I’ll give you my honest professional take. Let’s pull up the planning maps and look at your site’s specific overlays together.
What our clients say:
"The service given by Swarup has been faultless with both process and the design of both houses. Swarup after many briefings created a spectacular home to be sited at the front of our existing home. We received objections and a hearing was called by our council City of Greater Geelong. Swarup attended the hearing and not only overcame the objections he was complimented by the panel on creating an iconic design."
"The Mount Waverley clinic is going very well and we could not have done it without you. "
"Swarup has quickly responded to our request and in a very short brief really understood exactly what we wanted and delivered mock up sketch drawings in a matter of days. He is very professional and so far has been great to deal with."
"They are really good. Very professional. They are really professional "
"We greatly appreciate your help and hard work. Without your help, we won't reach our goals - to get occupancy permit. Finally, we are here now."
Dr HG on completion of their Medical Centre at Doncaster.
"Hi Swarup,
The day has finally arrived, thank you so much for all your hard work on this. Ben & I really appreciate you pushing so hard to get this over the line.
It has been great working with you.
Courtney "
Featured Projects in Victoria
Feasibility Reports: We honestly tell you if a project is profitable before you buy the land.
Interactive Profitability: Our unique and practical Ai developed platform focuses on the "highest and best use" of the site.
"Frank and Fearless" Advice: Swarup is known for telling clients when a project won't work to save them money.
End-to-End Service: We handle the site from initial feasibility sketch design, town planning drawings and inhouse planning report to the final building permit.
The "Planning-First" Checklist: Are You Ready to Subdivide in 2026?
10 Critical Questions Every Victorian Landowner Must Answer Before Designing a dual occupancy.
1. The Title Audit (The "Hidden Killers")
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Covenants: Does your Title have a "Single Dwelling" covenant? (Many 1950s-70s estates do, and they can be fatal to Dual-Occ).
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Section 173 Agreements: Are there existing legal agreements with Council that restrict further development?
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Easements: Is there a rear or side drainage easement? Building over an easement is rarely permitted for habitable rooms.
2. Zoning & Overlays (The "Rules of Engagement")
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Zone Type: Is it NRZ (Neighbourhood Residential), GRZ (General Residential), or RGZ (Residential Growth) LDRZ or Green Wedge Zone?
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Schedules: Have you checked the "Schedule" to the zone? (e.g., some councils have custom setbacks that override standard ResCode).
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VPO/SLO/HO: Are you under a Vegetation, Significant Landscape, or Heritage Overlay? These can protect even "non-native" trees or require specific "period" aesthetics.
3. The Mandatory Garden Area (The "Deal Breaker")
The 25%-35% Rule: For lots over 400sqm, Victoria mandates a percentage of the site must be "Garden Area." If your design is 1% over, it is a statutory refusal. Have you calculated this correctly?
4. Site Specifics (The "Physical Constraints")
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The 3-Metre Rule: Is there a significant tree within 3m of your proposed building footprint (even on the neighbour's side)? Tree Protection Zones (TPZ) can shrink your buildable area overnight. An arborist report will determine the data required for Council.
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Crossover Location: Can you get a second driveway? If there is a power pole, a street tree, or a bus stop out front, Council may reject a side-by-side duplex or two driveway dual occupancy.
5. Neighborhood Character (The "Subjective Test")
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Precedent: Are there other dual occupancies in your immediate "Character Area" (usually 3–5 houses either side)? If you are the first, expect higher resistance.
Data-First Feasibility: Unlocking Maximum ROI for Victorian Residential Developments
In the 2026 market, profitability is won or lost at the planning stage. We provide real-time yield ( number of dwellings and approximate floor areas) cost analysis and site-specific yield data before you commit to design drawings.
Dual Occupancy Compass
Your guide and answers to Dual Occupancy in Victoria
1. What is a dual occupancy in Victoria?
A dual occupancy is two separate dwellings on one lot that may later be split onto individual titles through subdivision, subject to zoning and council controls.
2. How is a dual occupancy different from a duplex or townhouses?
“Dual occupancy” refers to two dwellings on one lot; a “duplex” is usually two attached dwellings sharing a common wall; “townhouses” typically describe two or more multi‑level attached or semi‑detached dwellings, often on corner or larger sites.
3. Can I do a dual occupancy on my block?
It depends on zoning, overlays, lot size, frontage, access, easements, neighbourhood character and local policies. A planning‑led site assessment is required before you assume your land is suitable.
4. Is there a minimum land size for dual occupancy in Melbourne and Victoria?
There is no single state‑wide minimum. The focus is compliance with the New Low Rise Housing Code and any planning overlays. Each council assesses minimum lot size (in case it is specified) and density controls case‑by‑case under its planning scheme and ResCode, so every site must be individually checked.
5. Why is a planning‑first, feasibility‑led approach so important?
Most profit is won or lost before drawings are done. Planning‑first feasibility prevents you from buying the wrong site, over‑designing a project, or committing to a project that will never stack up financially.
6. What are the main dual occupancy configurations?
Common configurations are side‑by‑side duplexes with two street‑facing homes, backyard / tandem dual occupancies with a rear dwelling behind a front home, and corner or multi‑townhouse developments leveraging two street frontages.
7. Why are corner blocks so highly valued for dual occupancy?
Corner sites often support better natural light, separate street access for each dwelling, stronger street presence and more flexible layouts, which can improve both approval prospects and end values.
8. What do councils look for when assessing dual occupancy applications?
Councils examine lot size and frontage, site coverage, setbacks, height, overlooking and overshadowing, car parking, access safety, landscaping and neighbourhood character fit, all against ResCode and local policy.
9. How long does a dual occupancy project take from start to finish?
Timelines vary by council and builder, but a typical sequence includes months for site assessment, design and planning, followed by building permit, then around four months or more for single‑storey and six to eight months for double‑storey builds.
10. What is the difference between strata and Torrens / freehold title?
Strata‑style arrangements include individual lots plus shared common property managed by an owner's corporation, whereas Torrens / freehold titles give each dwelling its own lot with little or no common property and no ongoing owners corporation in most cases.
11. Which title structure is better for my dual occupancy – strata or Torrens?
It depends on your layout, how much shared driveway and services you have, buyer expectations in your area, bank valuation preferences and your long‑term hold or sell strategy. This should be decided during feasibility and subdivision planning, not at settlement.
12. Can I keep my existing home and build a second dwelling at the back?
Yes, if the site meets planning criteria for access, private open space, parking and neighbourhood character. This “backyard dual occ” approach is common for owners wanting to stay in place while creating a new asset or income stream.
13. Do I need subdivision approval at the same time as the town planning permit?
Best practice is to plan for subdivision from the start so the planning permit, services layout and title strategy work together, simplifying certification and registration when construction is complete.
14. What are the biggest risks with dual occupancy projects?
Key risks include buying an unsuitable site, underestimating planning risk and timelines, optimistic feasibility assumptions, poor layouts that fail standards, and lack of technical oversight during construction.
15. How does a feasibility study help me as a first‑time dual occupancy developer?
A proper feasibility shows likely yield, costs, timelines and realistic profit or equity uplift before you lock in a site or sign a build contract, giving you a clear “go / no‑go” decision and protecting your capital.
16. Do you work with all Victorian councils?
Yes. The planning‑led method is designed to work across all 79 Victorian councils, adapting to each municipality’s overlays, neighbourhood character and local policy nuances while following a consistent, data‑driven process.
17. When is the best time to talk to a planner or dual occupancy specialist?
Ideally before you buy a site, or as early as possible if you already own it. Early advice can stop you from purchasing the wrong property and can shape a more profitable, approvable design strategy from day one.
From Concept to Certainty: Your Project’s Financial Blueprint
We are always happy to provide a complimentary high-level site opinion to help you understand the zoning and glimpse the site’s potential. It’s the perfect first step.
However, when you are ready to move from curiosity to a serious, financially backed investment, our Advanced Feasibility Report is where the real value lies. We provide a comprehensive, data-driven roadmap before you commit to expensive drawings, surveys, or engineering.
Move forward with the certainty of a Registered Planner behind you:
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Verified Site Yield: Precise unit count with approximate floor areas determined by current Victorian zoning, overlays, and ResCode constraints.
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Spatial Metrics: Projected gross floor areas (GFA) and net saleable areas per unit to ensure market appeal.
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Financial Viability: Professional P&L summaries and cash-flow projections to secure funding and confirm ROI.
Don’t waste capital on "pretty pictures" before you’ve confirmed the profit. We use Registered Planner data to prove your ROI before a single line is drawn. This "Planning-First" strategy eliminates unbuildable concepts and wasted design fees.
1. What is a Dual Occupancy (The Built Form)
Under the Victoria Planning Provisions (VPP), a dual occupancy is defined as the use of land for two dwellings on a single lot.
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Tandem (Rear) Development: Retaining the existing house and building a second dwelling in the backyard.
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Side-by-Side (Duplex): Demolishing the existing house and building two new attached or detached dwellings, usually both facing the street.
2. What is a Dual Occupancy or Townhouse Subdivision (The Legal Split)
A dual occupancy or townhouse subdivision is the process of legally dividing that single piece of land into two or more separate Certificates of Title.
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The Outcome: This allows each dwelling to be sold individually to different owners.
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The Trigger: In Victoria, you generally need a Planning Permit for both the "Development" (the buildings) and the "Subdivision" (the lines on the map).
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The Value Add: This is where the "profit" is unlocked. A single lot with two houses is worth significantly less than two separate lots with their own titles.
Example of a Bentleigh Dual Occupancy Project Construction Cost in Victoria (*2026 rates)
This task framework is structured to reflect the 2026 Victorian construction landscape. For a dual occupancy where each unit is 220sqm (Total 440sqm), costs are heavily influenced by the 2.7m/3m ceiling heights and the labour-intensive nature of pitched tile roofs.
The rates below are professional estimates for 2026 (assuming a mid- to semi high level "turnkey" finish).
Project Parameters (Per Unit)
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Ground Floor: 135sqm (3m ceiling)
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First Floor: 85sqm (2.7m ceiling)
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Total GFA: 220sqm (440sqm total development)
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Roof: Pitched Concrete Tile
We hold the qualifications and experience to manage planning approvals with any Victorian council efficiently
We provide expert dual occupancy guidance across all 79 Victorian councils, from metropolitan Melbourne to regional and rural areas. Whether your property falls under Alpine, Ararat, Ballarat, Banyule, Bass Coast, Baw Baw, Bayside, Benalla, Bendigo, Borough of Queenscliffe, Brimbank, Buloke, Campaspe, Cardinia, Casey, Central Goldfields, Colac Otway, Corangamite, Darebin, East Gippsland, Frankston, Gannawarra, Glen Eira, Glenelg, Golden Plains, Greater Bendigo, Greater Dandenong, Greater Geelong, Greater Shepparton, Hepburn, Hindmarsh, Hobsons Bay, Horsham, Hume, Indigo, Kingston, Knox, Latrobe, Loddon, Macedon Ranges, Manningham, Mansfield, Maribyrnong, Maroondah, Melbourne, Melton, Mildura, Mitchell, Moira, Monash, Moonee Valley, Moorabool, Moreland, Mornington Peninsula, Mount Alexander, Moyne, Murrindindi, Nillumbik, Northern Grampians, Port Phillip, Pyrenees, Queenscliffe, South Gippsland, Southern Grampians, Stonnington, Strathbogie, Surf Coast, Swan Hill, Towong, Wangaratta, Warrnambool, Warrnambool, Wellington, West Wimmera, Whitehorse, Whittlesea, Wodonga, Wyndham, Yarra, Yarra Ranges, Yarriambiack, and Yarra Valley councils, our professional team has the knowledge and experience to manage planning approvals, liaise with officers, and ensure compliance with local regulations. No matter which council governs your property, we provide tailored dual occupancy solutions that meet planning requirements, optimise yield, and streamline the approval process.
Advanced Project Feasibility Report includes:
Advanced Pre-Development Feasibility
Make informed decisions before you commit. This assessment requires no final drawings, surveys, or engineering.
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Site Yield: Maximum unit count based on current zoning and overlays.
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Spatial Metrics: Projected floor area per unit.
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Financial Viability: Comprehensive P&L and Cash Flow summaries.
Ideal for: High-confidence pre-purchase validation.
Disclaimer: All projections are preliminary. Final figures are subject to confirmation via detailed engineering, geotechnical reports, and final architectural drawings.
11 Proven Steps to Launch and Grow Equity with a Dual Occupancy Subdivision Across Any Victorian Council
FINANCE AND LOCATION
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Finance and Location: Setting Up Your Dual Occupancy for Success
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Finance: Before you start exploring development sites, secure your finance with a pre-approval from a reputable lender. This ensures you know your budget, demonstrates seriousness to sellers, and streamlines the development process. Engaging a trusted mortgage broker can help identify suitable lending options and structure your finance efficiently for a dual occupancy or multi-dwelling project.
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Location: The right property is crucial. Consider position, school zones, transport links, and surrounding infrastructure when evaluating sites. Ensure the property is zoned for dual occupancy and subdivision under Victorian planning provisions. While dual occupancy is generally permitted across residential land in Victorian councils, subdivision may be restricted by minimum lot sizes or local council requirements. Additionally, covenants on the title could prevent development even if zoning allows it. Early professional advice can clarify these constraints and help you select a site with the highest development potential.
SITE ANALYST DEVELOPMENT FEASIBILITY
PLANNING BUILDINGPERMITS
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Site Assessment: The Foundation of a Successful Dual Occupancy
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Finding the right land is the most critical step in any dual occupancy project. Not all sites are suitable, and understanding the criteria for dual occupancy is essential. Work with professionals who have experience across Victorian councils — we can identify which sites have the highest potential and guide you through the complexities of site selection.
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Site Size & Frontage: For a duplex, the minimum frontage typically ranges from 16–25 metres in mid to outer suburban areas, while inner-city councils such as Melbourne and Yarra may allow narrower frontages. In some cases, a site with a 15.2-metre frontage may still be suitable depending on council requirements.
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Development Feasibility: Ensuring Your Project is Viable
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A detailed feasibility study is essential to confirm that a project will be profitable. Conduct your feasibility in reverse to determine the maximum purchase price for a site. This is especially important when acquiring new land — though less relevant if subdividing your own property or developing in your backyard.
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Comparable Sales & Rental Yield: Gather recent sales data and consult local agents to estimate end values and potential rental income. Understanding market demand ensures your projected yield is realistic.
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Build Costs & Budgeting: Accurate construction costs evolve through the design and planning process. Early concept plans allow your builder to provide preliminary estimates, while full town planning and building permit documentation enable a detailed tender process. Creating a Cost Budget early is crucial to manage spending and avoid overcapitalising or making emotionally driven decisions that can compromise your return.
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Town Planning & Building Permits
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Before construction, ensure all planning and building permits are in place. Once approvals are secured, you can finalise your construction finance with your lender. Only then can your builder commence work. Understanding the architecture, town planning, and building process is essential to maintain timelines, compliance, and budget control.
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Full Property Development Service
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We offer end-to-end dual occupancy solutions in Victoria — from site analysis, concept design, documentation, and permits through to construction. We are partnered with experienced builders to offer a cradle-to-completion service, while still allowing you the flexibility to choose your own builder if preferred. Our developer-led guidance ensures that every stage is managed efficiently, reduces risk, and maximises profitability.
ZONING AND TITLE
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The New Zones in Victoria. Understand the council planning requirements for dual occupancies in the area. Read council's planning scheme. The scheme will let you know the minimum size of land you'll need for your dual occ and what type of development is permissible.
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Title, Title Plan and Planning Certificates. Check the planning certificate to see if it is in a bushfire or flood zone. You can still develop in these areas but it will add to your build costs. Check the title for covenants or agreements.
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Contact us and we can examine the property title for you or call before 6pm seven days.
BUILDING AND PROPERTY SUBDIVISION
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Building Cost Budget & Construction: Maximising Value in Your Dual Occupancy Project
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Building Cost Assessment:
Engage your builder early to review the site — this is critical. Builders bring a practical perspective that can identify potential challenges or opportunities that planners or designers may overlook. We can guide you through the building process, ensuring your project aligns with your budget and timelines. -
Negotiating Terms & Reducing Holding Costs:
Secure favourable settlement terms whenever possible. A longer settlement period, such as nine months or more, can significantly reduce holding costs. With vendor consent, consider lodging your Town Planning Application pre-settlement. For triple occupancy sites, vendors may allow you to rent the existing property while planning and building approvals are underway. Completing design work and even obtaining the Building Permit before settlement can further minimise costs. Ensure subdivision is included in your Town Planning Application to streamline the process. -
Construction Phase:
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Dual occupancy (single storey): Approximately four months from start to completion.
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Double-storey projects: Typically around eight months to reach Certificate of Occupancy.
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Once construction is complete, an Occupation Certificate is issued, and your dual occupancy dwellings can be tenanted. At this stage, it’s recommended to order a depreciation schedule by providing your plans, builder’s tender, and other relevant cost documentation to a qualified quantity surveyor.
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Building Equity Through Subdivision:
After construction, apply for the subdivision certificate. Once issued by council and your lender has signed off, you can register the subdivision. Immediate registration isn’t mandatory if you plan to hold the properties; in some cases, keeping the dual occupancies on a single title may reduce costs, such as council rates. -
Alternatively, you may choose to sell one of the subdivided lots to a developer or builder ready to commence construction, rather than waiting the typical 6–12 months to reach this stage. This approach allows you to build equity and unlock value through your subdivision efficiently.
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Learn the benefits of a Dual Occupancy Property Subdivision .
Case study: Transforming a 600sqm Lot: From Single House to Dual Occupancy Project Costing
Developing a dual occupancy property is a smart way to maximize the potential of your land. In this example, we explore a project where an existing house is demolished to make way for two new double-storey dwellings of 150sqm each on a 600sqm lot.
Here’s a detailed walkthrough of the construction process, a quick build pre estimate prior to completed drawings and documentation, and visual insights into cost allocation and cash flow.
1. Dual Occupancy Construction Process Overview
Step 1: Site Assessment & Demolition
Survey the existing property.
Obtain demolition permits from local council.
Carefully remove the existing house, if that is the plan, including foundations, utilities, and garden features.
Prepare the site for construction.
Step 2: Excavation & Foundations
Excavate for the new single or double-storey dwellings.
Pour reinforced concrete footings and slab on ground.
Step 3: Ground Floor Construction
Erect brickwork walls (or alternative cladding systems).
Install windows, external doors, and initial services (plumbing & electrical rough-in).
Step 4: First Floor & Roof
Build first floor framework (timber or steel framing).
Complete roof structure and roofing tiles or sheets.
Install insulation, waterproofing, and basic external finishes.
Step 5: Internal Fit-Out
Electrical, plumbing, and HVAC completion.
Internal walls, plasterboard, painting, and floor finishes.
Kitchen, bathroom, and cabinetry installation.
Step 6: External Works & Landscaping
Driveways, paths, fencing, and landscaping.
Final site clean-up and handover.
Cost comparison for level of finishes
Chart showing the milestones of the construction
