Extension Process Request a Quote

From concept to completion

We always aim to be open and honest with our clients and involve them in the process, ensuring they have a good understanding of the work they've commissioned.
  1. Initial meeting & Project Brief

    A meeting with a design consultant is arranged. The feasibility of a project is tested against the likely building cost, the structural requirements and regulatory limitations. By the end of the meeting it is usually clear what direction the project will take.

  2. Preliminary Measure & Design

    The design consultant returns to refine the ideas previously considered, and to measure and photograph the house. This information is used to create a 3D computer model. The designer sets about resolving the best possible balance of aesthetics, efficiency, and detailing.

  3. Presentation & Agreement

    The design consultant returns with floor plans, a perspective rendering, a set of specifications and the project cost. The client can now see exactly how the extension would look and how well it meets the project brief. The client now agrees to sign up to an agreement authorising Duncan Thompson Extensions to prepare working drawings and a building contract.

  4. Site Visit & Working Drawings

    The new clients now meet the managing director, the estimator, the geotechnician and the structural engineer. Draftsmen re-measure the house to confirm the accuracy. We are then able to develop working drawings from the approved extension design. Some minor amendments are usually made on the client's request and included in the final documentation after their approval.

  5. Contract Signed

    A final set of drawings, specifications and the contract are delivered to the client for approval. With the design, specifications and price already confirmed, there are no surprises and we are usually able to proceed to the contract stage with confidence.

  6. Home Extension Building Permit Issued

    We now obtain Home Owner's Warranty insurance and the building surveyor issues the building permit. The project manager meets with the client to discuss details such as access to the site and the schedule of works. Building materials are ordered and tradesmen assigned to the project.

  7. Work On-Site Commences

    Projects involve the use of many trades such as scaffolding, concreting, carpentry, bricklaying, plumbing, electrical, plastering, tiling, and roof tiling. Despite this, clients can frequently live comfortably at home while construction continues.

  8. Notice of Completion Issued

    All extension timeframes are different, but a number of months after work on site begins a project is complete and a notice of completion is issued by the building surveyor.

House Extension Enquiries

Extension details

Getting started

Planning your home extension doesn't have to be daunting. Let us take some of the stress away. We offer a free, no obligation design consultation.

A senior member of our design team will be happy to talk to you and arrange a design consultation. We'll listen to your needs and discuss the best options for your family's lifestyle and budget.

Phone us on (03) 9836 8655 today to arrange your obligation-free Design Consultation across Melbourne's inner Eastern and bayside suburbs including Camberwell, Glen Iris, Brighton East, Surrey Hills, Balwyn, Hawthorn East, Brighton, Kew, Balwyn North, Caufield North and others!