Free instant estimates
Find out what your duplex, renovation or custom home could cost before you speak to a builder. Answer a few quick questions and get an indicative price based on Sydney construction costs, in about two minutes.
Each calculator is built around the things that really drive the price of a project in Sydney: your site, the size of the build, your finish level and the extras you choose. No sign-up is needed to see your estimate.
Estimate the cost to build a duplex in Sydney on a vacant block or as a knockdown rebuild. See a price range for the whole duplex and per dwelling.
Work out a renovation budget for one room or your whole home. Combine kitchens, bathrooms, laundries, decks and flooring into one estimate.
Estimate the cost to build a luxury custom home in Sydney. Choose your home size, number of rooms, inclusions and optional extras.
Tell us about your block, the size of your project, your preferred finish level and any extras. Each step explains what to choose if you're unsure.
Get an indicative price straight away, with no sign-up required. Go back and change any answer to see how it affects your budget.
Happy with the numbers? Request a callback and a Sena specialist will review your answers and prepare a detailed quote for your site.
Whether you're planning a new home, a duplex or a renovation, the same handful of factors make the biggest difference to your budget. Our calculators take each of them into account.
Want to learn more about a specific project type? Explore our duplex builds, knockdown rebuilds, luxury homes and renovations and extensions.
Sloping blocks need more excavation and retaining. Knockdown rebuilds include demolition, and bushfire-prone land may need BAL-rated materials.
Floor area, storeys and the number of bedrooms and bathrooms all add to the cost. Wet areas like bathrooms cost more per square metre than living spaces.
Inclusions such as benchtops, tiles, joinery and fixtures can change a budget significantly. Each calculator lets you compare finish levels.
NSW requirements like BASIX, waterproofing to AS 3740 and HBCF insurance for work over $20,000 are part of building in Sydney.
Our team is happy to talk about your project and give you a clear, honest idea of costs. Consultations are free and there's no obligation.
