Trusted House Extension Builders Inner West - On Time, On Budget, Guaranteed!

Most home extensions take between 3 to 6 months, depending on the size, complexity, and level of structural modifications required. Single-storey extensions are usually faster to complete, while second-storey additions and more intricate designs may take longer due to engineering requirements and council approvals. From day one, we provide a clear timeline, so you’ll always know what to expect at each stage of the project.

Yes, most home extensions require council approval process to ensure compliance with local building codes and regulations. However, we take care of the entire approval process for you. Our team handles everything from Development Applications (DA) and Complying Development Certificates (CDC) to liaising with engineers and certifiers. This ensures your extension is approved smoothly without unnecessary delays or complications.

In most cases, yes, homeowners can continue living in their property while the extension is being built. Our team takes careful measures to minimize disruption, keeping construction areas secure and separate from your main living spaces whenever possible. However, for larger-scale projects—such as second-storey additions or major structural work—you may need to relocate temporarily for safety reasons. If that’s the case, we will discuss this with you well in advance so you can plan accordingly.

The house extension cost typically ranges between $150K to $500K+, depending on factors like size, materials, design complexity, and structural modifications. A single-storey extension is generally more affordable, while a second-storey addition or high-end finishes can increase costs. At Inner West Home Extensions, we offer fixed-price contracts, so you’ll know exactly what you’re paying—no hidden costs, no budget blowouts. We also provide a free consultation and quote, so you can get a clear idea of pricing before making any commitments.

In NSW, home extensions typically require either a Development Application (DA) or a Complying Development Certificate (CDC). A DA is lodged with your local council and involves a more detailed assessment process, which may consider heritage overlays, neighbour objections, and zoning laws. It's ideal for more complex or bespoke projects.

A CDC, on the other hand, is a fast-tracked approval process issued by a private certifier, provided your extension meets strict planning and building requirements set out in the State Environmental Planning Policy (SEPP). CDCs can save time and money, but not all properties or extensions qualify. At Inner West Home Extensions, we assess your site early to determine the best pathway for fast and compliant approvals.

Not always. Whether or not you’ll need to vacate depends on the scale and type of extension. For example, single-storey rear extensions or garage conversions can often be done while you remain in the home with minimal disruption.

However, for second-storey additions, or when utilities like water, power, or gas need to be interrupted, temporary relocation may be recommended for safety and comfort. We’ll always advise you upfront, create staged plans if needed, and do everything we can to maintain livable conditions throughout the project.

Yes—in most cases, a well-designed and properly executed extension will increase your home’s market value significantly. In high-demand suburbs like those in Sydney’s Inner West, added space such as a second bathroom, open-plan kitchen, or additional bedroom can boost value by 15–30%, depending on the quality and market conditions.

However, overcapitalising (spending more than the increase in value) is a risk. That’s why our team always aligns your project scope with realistic valuation expectations, ensuring the best return on your investment.

Most homeowners fund extensions through home equity loans, construction loans, or mortgage refinancing. If you’ve owned your home for a few years, there’s a good chance you have built-up equity that can be leveraged to fund your renovation.

Construction loans are specifically designed for staged payments and progress claims. We recommend speaking to your lender early to get pre-approval, and we can assist by providing detailed cost breakdowns and fixed-price contracts to streamline the approval process.

Selecting the right builder is one of the most important steps in ensuring a successful project. Look for a company with specialist experience in home extensions, particularly in your local area. They should be fully licensed and insured, provide fixed-price contracts, and offer clear timelines and communication throughout.

Always check reviews, request recent project examples, and confirm they are familiar with Inner West council requirements and heritage overlays. At Inner West Home Extensions, our team lives and works locally, and we offer full project transparency, experienced trades, and a track record of delivering on time and on budget.