Coast Build
Renovations and additions

Renovations and additions, Sydney

Rear extensions, second storeys, new kitchens and bathrooms, the whole house opened up to the garden. Coast Build builds renovations and additions from your architect's or designer's drawings, approval included.

Get a fixed price   Check the cost range →

What we do

  • A fixed price off the drawings for the extension, second storey or whole-house renovation
  • Complying development or a development application
  • Structural work, new roof and glazing
  • Kitchens, bathrooms, joinery and finishes
  • Services upgraded to suit the new plan
  • Fixed price, with the house kept livable through the work where we can

The rules, in short

Internal renovations and many rear extensions are complying development under the Housing Code. Second storeys and work on heritage or conservation-area houses usually go to council.

Check your block →

What will renovations and additions cost?

Pick what you are building, the size and the finish and get a Sydney range in ten seconds. No email needed to see the result.

All levels, garages and balconies excluded. Filled in for the type you pick; change it to suit.

How we work

01

Check the block

Run the address through Block Checker. It tells you what the block can carry under your council's plan and the state housing policies, before anyone draws a line.

02

Check the cost

Our calculator gives a Sydney range for the type of home, the size and the finish. If the numbers work, we visit the block.

03

Approve

Your architect or designer draws it. We take the drawings through complying development or a development application, with the planner, surveyor and consultants it needs.

04

Build and hand over

One fixed price, one site manager, weekly photo reports, and the occupation certificate on the date we agreed.

Questions people ask

Can we live in the house during the work?

Often, for a rear extension or a second storey built over the existing roof. A whole-house renovation usually means moving out for the main part of the program; we tell you which at the first visit.

Where do I start?

Send us the address and what you want to do. We walk the house, tell you what the block allows and what it will cost, and only then do you brief your architect.

Start with the address

Send us the block and what you have in mind. We check what it can carry and what it will cost before you brief an architect.

Get a fixed price

Also: Duplexes · Terraces and manor houses · Garden studios · New homes and knock-down rebuilds