The largest cost variances between two apparently similar projects are almost never in the building. They are in the ground, the overlays, the services and the access — the items an optimistic quote carries as an allowance.
These articles explain what drives the numbers, what provisional sums really mean, and how to compare two builders fairly.
13 articles in Cost & Budget
What Actually Drives the Cost of Building a House in Brisbane
The site, design, inclusions, and contract terms that move a Brisbane build budget up or down — and where owners most often get caught out.
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Reactive Clay Soil in Brisbane: What It Does to Your Footing Budget
Why two identical houses on the same Brisbane street can differ by tens of thousands in footing cost, how AS 2870 site classification works, and when to get the soil test.
ReadWhat Are Site Costs, and Why Were They Not in My Quote?
The line items that turn an attractive advertised price into a much larger final number, and how to get them priced properly before you sign anything.
ReadHow to Check the Overlays on a Block Before You Buy
A short pre-purchase checklist for South East Queensland land — flood, bushfire, character, vegetation and infrastructure — using searches that are free or close to it.
ReadRetaining Walls: What They Cost and When You Need Approval
Why retaining is one of the largest hidden costs on a sloping Queensland block, what drives the price, and the height at which approval becomes mandatory.
ReadProvisional Sums and PC Items: Where Fixed Prices Stop Being Fixed
The two contract mechanisms that let a fixed-price build increase, how to tell a reasonable allowance from a warning sign, and what to ask before signing.
ReadBuilding Over or Near a Sewer: The Check That Kills Projects
Why sewer alignment is the highest-value pre-purchase search in South East Queensland, what build-over approval involves, and when a main has to be relocated.
ReadDriveways, Crossovers and Site Access: The Costs Nobody Quotes
Why the driveway is a regulated structure, what a crossover approval involves, the gradient limits that catch steep blocks, and how access affects the whole build.
ReadHow Much Contingency Should a Building Budget Carry?
Why a fixed-price contract still needs a contingency, how much to hold for a new build versus a renovation, and the costs outside the contract people forget.
ReadHow to Read a Building Quote and Compare Two Fairly
Why the lowest number is frequently the most expensive, the six things to check line by line, and the questions that expose an incomplete price.
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Building on a Tight Budget: Where to Save and Where Not To
The savings that cost nothing later, the ones that cost a great deal, and how to stage a build so the expensive-to-change items get done first.
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What Actually Drives Resale Value in a Queensland Home
The features buyers pay for, the expensive ones they do not, and how to spend a renovation budget so it comes back at sale.
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What Drives the Cost of a Granny Flat in Queensland
The factors that actually decide what a secondary dwelling costs to build in South East Queensland, from services and access to size limits and finish level.
ReadGot a question about your own block? Ask us directly.
Send through the address and what you have in mind. We will review the zoning, the overlays and the site conditions and come back with a straight assessment.