Custom Melbourne Home Extensions

Interior-focused home extensions in Melbourne typically range from $50,000 to $150,000+, depending on the size of the space, structural changes required and the level of finishes.
This includes extensions such as enlarging living areas, adding a new bedroom or study, extending a kitchen or bathroom, or improving your home’s layout for better flow.

Exterior extensions (e.g., second-storey builds, major footprint increases, roof changes) generally start higher—often $150,000–$300,000+.
By comparison, interior extensions are more affordable and deliver exceptional lifestyle and resale value upgrades without the cost of a full exterior rebuild.

Most home extensions in Melbourne take 6–12 weeks, with interior extensions often being completed faster because they involve fewer structural changes and less exterior work. Larger extensions or those involving major engineering, roofing modifications or service relocations can take longer. Before starting, we provide a clear project schedule and keep you updated at every stage so the entire process feels organised, predictable and easy to plan around.

Many interior home extensions do not require full council planning approval, especially if they stay within your existing footprint or involve reconfiguring internal space. However, building permits are still required for structural work, and extensions that enlarge the home, alter load-bearing walls, or fall under heritage overlays may require additional approvals. We manage all permits, engineering and compliance requirements for you, ensuring your home extension meets Victorian building standards without any stress or confusion.

Yes — in many cases, you can comfortably stay in your home during an interior extension. We organise the project in controlled stages, isolate work areas where possible, and maintain access to key parts of your home so your routine stays as normal as possible. For larger exterior extensions or major structural work, we’ll discuss any short-term disruptions early so you can plan ahead with confidence. Our goal is always to keep the process as smooth and comfortable as possible for you and your family.

A home extension quote includes everything required to complete the build from start to finish, including design guidance, engineering (if needed), structural work, plumbing and electrical services, plastering, flooring, fixtures, internal finishes and all project management. We provide clear, itemised and transparent pricing, so you understand exactly what’s included and how the project is being delivered. The only time the price changes is if you choose to add new work to the agreed scope.

Absolutely. We tailor the design and scope of your home extension to your budget and can recommend practical solutions to help you get the best outcome without overcapitalising. Whether your priority is adding space, improving flow, or increasing resale value, we guide you through smart decisions that match your goals. Once your scope is confirmed, your price remains fixed unless you choose to expand the project.

Homeowners choose us because we specialise in custom, interior-focused home extensions that improve how families live every day. We prioritise clear communication, detailed planning and reliable workmanship, ensuring your project runs smoothly from concept to completion. Our tight-knit team delivers consistent quality—no random subcontractors—and our fixed-price, transparent approach means you always know exactly where your project stands. We create extensions that feel natural, functional and genuinely elevate your home’s value and comfort.