How we estimate: where every number comes from

Every line in a MyRemodelCalculator estimate comes from one of exactly three places, and the line tells you which. That is the whole method, and this page is the long version of it — including the parts we refuse to guess at, and the reason we do not publish an accuracy percentage.

The short version. A price is either one you photographed, one you typed, or a regional average we estimated for your ZIP code and labeled as such. Nothing is added to your estimate without you seeing where it came from. It is a planning estimate, never a quote.

What this is, and what it is not

An estimate is a planning tool. A quote is a price a contractor is willing to be held to, and it can only come from someone who has seen the job, walked the space, and accepted the risk of being wrong. Nothing produced on this site is that, and no online tool can be.

What an estimate is good for is narrower and still worth twenty dollars: deciding whether a project fits your budget before you spend six weeks collecting bids, and having a line-by-line baseline in hand when those bids arrive so that a low number becomes a question instead of a bargain.

The three sources, and why every line is labeled

Most cost calculators return one number and do not tell you how much of it is measurement and how much is assumption. Ours splits every line into one of three sources, shown on the line itself:

Source	What it means	How much to trust it
Your photo	You photographed the product's price tag and that price is on the line.	It is your actual price for that product, at that store, on that day.
Your number	You typed it — a contractor's quoted rate, a price you already found, a figure from a bid.	As good as the source you took it from.
Regional average	You have not priced this line yet. The Engine estimated it for your ZIP code.	A starting point. It is the line most worth replacing.

The labeling is the point. An estimate where you have photographed every product tag and entered a real labor rate is close to arithmetic. An estimate left entirely at regional averages is a rough plan. Both are useful, but they are not the same thing, and a tool that presents them identically is hiding the difference from you.

There is no pricing database behind this

We should say this plainly, because the absence is unusual enough to be worth stating: MyRemodelCalculator does not maintain a database of regional construction costs. Unpriced lines are estimated by the Engine using your ZIP code as context, and they are labeled a regional average rather than presented as a looked-up figure. We would rather tell you that than imply a precision we have not built.

How your space becomes line items

You photograph the room. The Engine reads the existing conditions in the photo — what is there now, roughly how big it is, what would have to come out — and lays that out as individual material and labor lines rather than a single number.

Line items are the deliverable, not a total. A total tells you whether you can afford something. Line items tell you what you are buying, which is what you actually need when a contractor's bid comes back and you want to know what is in it and what is not. Our guide on reading a contractor's quote covers what to do with them once you have both.

You can edit or remove any line. If you are not touching the flooring, take the flooring line out and the total moves with it.

How a price is read off a photographed tag

This is the part with the most ways to go quietly wrong, so it is the part with the most rules. A store shelf tag can show a sale price, a crossed-out regular price, a per-square-foot price, a per-box price, and a savings amount, all at once. Getting the wrong one is not a rounding error — a per-box price entered as a per-square-foot price is off by an order of magnitude.

What the Engine does with a tag:

Classifies every price it sees rather than grabbing the largest or the first — current, regular, per-unit, per-package, or savings.
Defaults to the price you would actually pay — the sale price where there is one. The regular price is kept as context, not used.
Discards savings amounts entirely. "Save $40" is not a price, and adding it to an estimate would be nonsense.
Asks you to choose only on genuine ambiguity — a per-unit price against a per-package price, where both are defensible and only you know which applies. A sale price against its own regular price is not a genuine ambiguity, and we do not pretend it is one by making you answer.
Never auto-adds an uncertain read. A partial or blurry tag comes back as an editable suggestion you confirm or overwrite. It does not silently become a line.

Photographing a screen instead of a tag. A product page on your phone works and we will read it, but a physical tag reads more reliably. If a screen photo does not come back cleanly, type the number in — that path is always open and never blocked.

The practical side of this is in how to snap a price tag the Engine can read.

Why we do not publish an accuracy percentage

You will see competing tools advertise a figure — 95% accurate, 98% accurate, accurate estimates in 60 seconds. We do not publish one, and the reason is not modesty.

A single accuracy number across every job is not a measurable claim. Accuracy against what? A remodel has no true price until it is finished and paid for, and the same kitchen quoted by three contractors produces three different numbers, all of them real. Any figure that survives that would have to be measured against a large sample of completed jobs with known final costs, tracked over time, and published with its sample size and its date. If a tool has done that work, the study is the interesting artifact and it should be on the page.

What we can tell you honestly is the shape of it: the estimate is as accurate as the share of it you have priced yourself. That is a statement you can act on, and it points you at the useful next step, which is to go photograph a price tag.

What pushes a real job outside the estimate

Three things do this, and it is worth knowing them before you start:

Finish upgrades chosen after work has started. By a wide margin the most common. The tile you liked in the showroom stops looking good once the walls are open. This is not the estimate failing; it is a decision made later.
What demolition uncovers. Rot, old wiring, a subfloor that has to come out, plumbing that is not where anyone thought. No photograph sees through drywall.
Structural changes. Moving a wall or relocating plumbing changes the job into a different job.

The first is the only one you control, and knowing that in advance is most of the value of reading this page.

What we do not do with your information

Your estimate is not a lead. It appears on your screen and stays there. No contractor gets your details unless you fill out the contractor request form yourself.
We do not sell your information. If you do request a contractor, it goes to one licensed contractor in your area, not auctioned to four.
Your photos are processed by a third-party AI provider, named explicitly in our privacy policy rather than described vaguely. Photos and estimate data are stored for 30 days after your access window ends, then purged. Download the PDF to keep a permanent copy.

Common questions about the method

Is a MyRemodelCalculator estimate a quote?

No. It is a planning estimate. A quote is a price someone is willing to be held to, and it can only come from a contractor who has seen the job. The estimate exists to tell you whether a project fits your budget and to give you a line-by-line baseline to check bids against.

Where do the prices come from?

One of three places, and every line says which. A price you photographed from a product tag is your actual price. A price you typed is your number. Anything you have not priced yet starts at a regional average estimated for your ZIP code and is labeled a regional average on the line. There is no pricing database behind it, and we do not claim there is one.

What accuracy percentage do you claim?

None. We do not publish an accuracy percentage, because the honest number depends entirely on how much of the estimate you have priced yourself. An estimate where you photographed every product tag is close to arithmetic. An estimate left entirely at regional averages is a starting point. Any tool quoting a single accuracy figure across every job is describing something it cannot have measured.

What happens when a price tag photo is blurry or ambiguous?

Nothing is added without you confirming it. A partial or unclear read comes back as an editable suggestion, not a committed line. Where a tag genuinely shows two defensible prices — a per-unit price and a per-package price — you are asked which one applies. A sale price and its crossed-out regular price are not treated as ambiguous: the sale price is what you pay, and savings amounts are discarded rather than added.

What pushes a real remodel outside the estimate?

Three things, in order of how often they do it: finish upgrades chosen after work has started, what demolition uncovers behind the walls, and structural changes such as moving a wall or relocating plumbing. The first is the most common by a wide margin and it is not a failure of the estimate — it is a decision made later.

Build your estimate — $20 for 30 days

Written by Tyson McKay, who builds MyRemodelCalculator and has run his own remodels. Published 5 September 2026. This page describes the method as it currently works; when the method changes, the date changes with it.