We negotiate with Councils on behalf of our clients regularly so we understand what they require and by when. There’s nothing you need to do.

Before construction begins

Duncan Thompson Extensions will analyse your property and determine what permits and planning approvals are required to build an extension to your home. Your extension cannot be built without a Building Permit and may not be built without approval from your local Council. Your Council will ensure your extension complies with all regulations. We negotiate with Councils on behalf of our clients regularly so we understand what they require and by when. There’s nothing you need to do.

Town Planning Approvals

Almost half of all extensions we design and build will require Town Planning approval. Because of our unmatched knowledge and experience in dealing directly with Councils we will know almost immediately whether your house will be suitable to extend or not. All our work is inspected by a qualified Building Surveyor throughout the build to guarantee all our work complies with mandatory building regulations.

Permits and town planning overlays that could affect your extension build

Heritage Overlay

Many of Melbourne’s older suburbs have areas which contain existing homes in a heritage zone. Typically, upper storey extensions are restricted, if visible from the street, although Duncan Thompson Extensions has managed to incorporate upper storey extensions further back in the roof. Ground floor extensions to the rear of the house are usually accepted by the Town Planning Departments.

Design & Development Overlay

Some municipalities have Design and Development overlays to provide additional controls to suit the particular areas of Melbourne. Requirements typically in a design and development overlay usually relate to building height and setbacks, although can include other requirements relating to the design or built form of new development.

Special Building Overlay

In areas which are subject to flooding or overland drainage which affects the lower lying areas of Melbourne, special building overlays exist to control floor level heights to ensure homes remain safely out of the flood waters.

Significant Landscape Overlay

Melbourne has many green suburbs with many mature trees providing shading and other amenities which we enjoy. To aid in their retention, Councils use significant landscape overlays as an approval process to control significant tree removal. The overlay defines criteria that controls which trees are considered significant.

Building Permit

The building permit is required for all extension works and is issued by a Registered Building Surveyor. The building permit can only be issued when the planning permit (if required) has been issued and insurances are in place to protect the consumer. Duncan Thompson Extensions includes all documentation and fees associated with obtaining the building permit.

Demolition Permit

A demolition permit is required to demolish any major works and can only be applied for after the town planning permit has been obtained.

Dispensation Protection

Some building projects will involve a variation to the regulations and therefore need special approval. In some of these cases, a registered building surveyor has the authority to assess whether or not the design will achieve the intent of the regulations and, if so, still issue a permit. In some exceptional circumstances, only the local council will be able to approve a building project that is not in accordance with the regulations. In these cases a special dispensation, known as a ‘consent and report’, is sought from your local council.

The need for a dispensation may occur in the following circumstances:

  • Building over an easement
  • Building on flood prone land
  • Building a new home closer to the front boundary than your neighbours have done
  • Erecting a garage on a vacant block.

Related Information

Home Extension Costs

One thing almost everyone wants to know is how much a home extension costs. This is a difficult question to answer, but here we explain what factors determine the cost of an extension.

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There are a number of factors outside of our control, however we’ve completed so many over the last 30 years that we have a pretty good idea how long it takes to build an extension.

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We offer fixed-price home extension contracts which include design, planning approvals and construction. The contract details everything, with costings, so there are no nasty surprises.

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Project Management

Your Building Supervisor will be onsite every step of the way to ensure everything runs smoothly. They are your day-to-day contact and will facilitate any requirements you may have.

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Building Inspections

During every home extension a series of inspections are carried out to ensure all aspects of the construction have been implemented safely and within mandatory building requirements.

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Our people, from the front office right through to the onsite trades have worked with us for many years. This continuity of people ensures a smooth workflow during every extension we build.

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Building Permits

We’ll determine what permits and planning approvals are required to build an extension to your home. We negotiate with Councils on your behalf so there’s nothing you need to do.

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Building Insurance

Every home owner should ensure they have adequate insurance on their home before they start an extension. We can assist you if you have concerns about your level of cover.

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