• Swarup Dutta

How much will a Dual Occupancy Cost

The following costs are associated with developing your land with a dual occupancy- tandem or duplex style.

  • The cost of acquisition of the land if you do not own it

  • The interest or holding costs

  • Your share of equity or the deposit which is usually 10% of the cost of the property

  • Stamp duty which is 5.5% in Victoria and 12% for overseas interests plus FIRB fee

  • Legal costs for conveyancing which could be in the vicinity of $1000 upwards

  • Town Planning Application fee which is around $1500 depending on the value of the construction costs

  • Subdivision permit fee of around $1400

  • Bonds or contributions your local Victorian Council may request. Generally speaking open space contributions apply to three or more lot subdivision. A bond may apply to ensure the landscaping is completed as per approved plans

  • Metropolitan Planning Levy (MPL) for construction costs above the MPL threshold which is now just over $1m

  • The Land surveyors fees which can be around $3000

  • The Architect and Town Planners fees which ranges from $12,000 upwards. Talk to us for our competitive fee structure

  • The landscape consultants fee which is around $1000 and higher for larger sites

  • BESS and ESD report which is becoming common in some councils- around $1000

  • A civil engineers fee for the drainage design around $1500 +

  • The structural engineer's fee which can be in the $3500 range depending on the type and coplexity of the construction. Sloping land, poor soil report will affect the engineering and building cost

  • The fees to prepare Building Permit/Tender documents

  • An arborist report if it applies. Arborists report on the vegetation on the land and on adjoining properties if applicable

  • The Building surveyors fee which can be upwards of $1500++ depending on dwelling sizes

  • A soil test report around the $450 mark

  • The cost of the construction which can be $1200 per sqm and more depending on finishes and site constraints

  • The subdivision costs (providing services, crossovers, driveway,landscaping which can add up to $15,000 and more for a simple dual occupancy)

  • An open space contribution usually applies for three or more dwellings on a lot. The contribution can be 5% of the land value on the rates notice

  • A contingency amount to cover unexpected construction costs which should be 5% of the contract price

  • Feel free to call us on 0448 170 132 to discuss your project or please complete the form for a 24 -48 hour response

Th above feasibility is a general example for a duplex style feasibility.

There are few types of dual occupancy- the most common being the tandem here site costs (driveways and connection of services can be more), the duplex with each unit have a street presence which attracts a premium or those on corner lots and in some instances one unit above another.

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AuArchitecture Melbourne

Mail only : #223, 2/134 Pascoe Vale Road ,Moonee Ponds 3039.


M:  0448 170 132 call me direct -7 days  from 9am to 7pm for the best advice on dual occupancy subdivision, custom home design, commercial projects  or town planning matters. 



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AuArchitecture will gladly donate  design and planning services  to charitable organisations worldwide. 

We would love to serve you through smart and beautiful  designs for your dream house, dual occupancy, townhouse or apartment projects or commercial and industrial buildings which makes  a difference.

I recall doing a

  • large multi unit  residential design with a sky-street on the fifth level for the kids to play in safety while  creating  a real sense of community living and  

  • a modular home design which grew with the family budget rather like a series of plug in components and 

  • the windmill house with views where each stair landing led to a different view and function and

  • right down to designing and obtaining planning permits for practical traditional designs to meet the family  or developer's budget and objectives.

Our Founder has  worked on hundreds of development sites for dual occupancy and townhouses. He worked on commercial, health, education, retail and leisure projects to name a few other disciplines.

Our professional designs are flexible to suit your vision and realistic to meet your budget.

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