Why we open the wall before we price the job

There is a stage in our renovation process that reliably annoys people, and we keep doing it anyway. Before we give you a fixed price on a renovation, we charge you to investigate the building. We open up linings, look at framing, check wiring, trace the plumbing, and compare what we find against the council property file. Then we price the job.

The annoyance is understandable. Other builders will quote from a walkthrough, for free, this week. We are asking you to pay money to be told the price of spending more money. This piece is the honest case for why we work that way, and what you get for it.

What a wall can hide

A renovation quote is a prediction about a building, and the building keeps its history behind the linings. In the houses we open up around South Auckland and northern Waikato, a working list of what turns up: moisture damage and rot around old leaks that never quite got fixed. Borer in original framing. Wiring in half a dozen vintages, some of it fine, some of it needing replacement the moment it is disturbed. Undersized or notched framing from previous renovations. Plumbing that was modified sideways over decades. And, in a large share of older homes, work that simply never went through council, which changes both the scope and the paperwork of what we are about to do.

None of this is exotic. It is the ordinary archaeology of New Zealand housing. The only question is whether it gets found before the price is set or after.

What a quote without investigation really is

A builder quoting a renovation without opening anything up has exactly three options, and it is worth being blunt about them. They can price optimistically, assuming clean framing and sound services, and recover the difference through variations when the wall says otherwise. They can price pessimistically, padding the number against everything they cannot see, and you pay the padding whether or not the problems exist. Or they can price with provisional sums so wide that the fixed price is decorative.

Every one of those puts the cost of ignorance on you. The variations path is the worst of them, because it hands you the extra bills at the exact moment you have the least power: mid-job, walls open, no realistic option to stop. That is where renovation horror stories actually come from. Not villains. Just guesses, invoiced later.

It is worth sitting with what that timeline feels like from inside, because it is the version most renovation budgets die in. Week one, demolition reveals the rot. Week two, the variation is priced while the job stands part-open, and you approve it, because what else do you do with your kitchen in a skip. Week four, the wiring joins in. Every one of those moments was discoverable in advance for a fraction of the drama, and the only thing the free quote saved you was the knowledge.

How the paid stage works

• We open up where the job and the building's history suggest, and we look with a builder's eye: framing, moisture, wiring, plumbing, and any signs of unconsented work against the property file.
• Where we look is not random. The property file tells us what the house is supposed to be, and the difference between the file and the building tells us where to be curious. A bathroom that moved, a wall on no plan, a deck of uncertain vintage: those are the places we open first, because previous work, and previous shortcuts, concentrate there.
• It is less invasive than people imagine. We open deliberately, a lining panel here, a ceiling access there, and we make good or fold the opening into the coming work. It usually takes days rather than weeks, and you can stay living in the house while it happens.
• You get told what we found in plain words, with photos, including the things that are fine. Finding nothing wrong is a genuinely valuable result, because it lets us price tightly without padding.
• The investigation cost is credited against the build if you go ahead with us. You are not buying a report to put in a drawer. You are buying the accuracy of your own fixed price.
• If we find something big, you find out while every option is still open: change the scope, phase the work, adjust the budget, or walk away having spent a little to avoid spending a lot. Compare that with learning the same fact in week three.
• What remains provisional after investigation is genuinely unknowable, and the list is short. That is the whole point. We would rather show you a small, honest list of unknowns than bury a large one inside a confident number.

A renovation quote written without opening anything up is a guess wearing a suit. Ours were too, years ago, and we watched where the guesses landed: on the homeowner, mid-build, as variations. The paid investigation is simply the cost of replacing that guess with knowledge, taken at the start of the job when knowledge is cheap. It annoys people for a fortnight. The alternative annoys them for the whole build, and it costs more.