Is your contractor's quote fair?
Find out in about a minute.
Film what needs fixing. Grainwork builds an independent repair estimate from your own footage — then checks any contractor's quote against it, line by line.
Free estimate. Free verdict. iPhone, US.
Film it
A short video or a single photo of the repair — a leak, a crack, a worn roof. Any wall, fixture, or damage.
Get the number
In about a minute: an independent estimate range, priced against local repair-cost data and calibrated with real contractors.
Check the quote
Enter a contractor's quote and see it beside your estimate — that's a Bid Check. Unlock the full line-by-line read, and exactly what to ask, when you're ready to act.
On your side — and we mean it structurally.
We take no money from contractors. We sell no leads. There's no “now hire someone” pitch after the verdict.
Most “find a pro” apps are paid by the pros. Ours isn't — so the number has no agenda. It's just the number.
Works for any repair
Roof, HVAC, plumbing, paint, drywall, siding, concrete, and more. Whether you're staring at storm damage or a quote that feels high, the read is the same: independent, local, and built from what your home actually looks like.
And it remembers.
Every check becomes part of your home's record — a plain-English history of what's been looked at, in a calm voice, kept for you. Not a sales funnel. A record.
Free to see your estimate and the verdict. Comparing three bids on one job? A Bid Check 3-pack reads all three, side by side.
Grainwork provides an independent estimate for informational purposes. It is not a formal bid, appraisal, or guarantee of price. Always confirm with a licensed professional.