Fixed price, honestly: how we cost a whole-home renovation

Fletcher Fraser

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28 Jul 2026

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5 min read

Why we price from complete documentation, what a first estimate is for, and the three places renovation budgets usually go wrong.

Fixed price, honestly: how we cost a whole-home renovation

A whole-house rework, priced five times before contract


Every builder will tell you their price is fixed. The useful question is what it was fixed from. A price fixed from a sketch is a guess with a signature on it; a price fixed from a complete, engineered, approved set of drawings is a promise we can keep. We only give the second kind.

Five numbers, each tighter than the last

You hear a price from us five times. A range at the first meeting, from what you tell us and what we know of houses like yours. An estimate for each concept, so you choose between real options with the cost in view. A tighter estimate from the final drawings. A fixed-price quote once engineering and approvals are in hand. And the contract, which is the same number written into a Master Builders agreement.

Because the people who price the house are in the room where it is drawn, nothing in the design gets far before someone has costed it. That is the whole advantage of a design and build studio, and it is why the range narrows instead of jumping.

Where renovation budgets actually go wrong

Three places, in our experience. Allowances that were set too low to make a quote look good; latent conditions in an old house that get priced with a margin on top; and finishes chosen late, in a hurry, at retail. We set allowances from three real finish ranges, we add no markup to unexpected work or to your PC items, and we run an interior design phase at the start of the build so every finish is chosen before it is needed.

A first estimate, then, is not a lesser version of a quote. It is the tool that lets you make design decisions with money in view, so that by the time the number is fixed there is nothing left in it to surprise you.

“A fixed price is only honest if the drawings it is priced from are finished.”

Fixed price, honestly: how we cost a whole-home renovation: second image

Allowances become real prices during the build


Let’s talk about your home

We take on a limited number of renovations each year and book well in advance. Tell us about the house and we will call within one business day.

Some of the best homes begin with a simple conversation.

/03

We take on a limited number of renovations each year and book well in advance. If you’re planning a significant renovation, we’d love to hear about it early, even at sketch stage.

GOOGLE RATING

4.8

STRUCTURAL WARRANTY

7 YEARS

MASTER BUILDERS

SINCE 1989

Let’s talk about your home

We take on a limited number of renovations each year and book well in advance. Tell us about the house and we will call within one business day.

Some of the best homes begin with a simple conversation.

/03

We take on a limited number of renovations each year and book well in advance. If you’re planning a significant renovation, we’d love to hear about it early, even at sketch stage.

GOOGLE RATING

4.8

STRUCTURAL WARRANTY

7 YEARS

MASTER BUILDERS

SINCE 1989

Let’s talk about your home

We take on a limited number of renovations each year and book well in advance. Tell us about the house and we will call within one business day.

Some of the best homes begin with a simple conversation.

/03

We take on a limited number of renovations each year and book well in advance. If you’re planning a significant renovation, we’d love to hear about it early, even at sketch stage.

GOOGLE RATING

4.8

STRUCTURAL WARRANTY

7 YEARS

MASTER BUILDERS

SINCE 1989

9 FORSYTH ST,

FAIRFIELD QLD 4103,

AUSTRALIA

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MEMBER — MASTER BUILDERS AUSTRALIA

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