weli. PriceProof
Win the pricing conversation you keep losing.
Your seller shows up anchored to a 2022 price, holding a HouseSigma printout. PriceProof turns the sold comps you already pull into a graded, source-cited pricing dossier you hand across the kitchen table. It comes back in about a day — this is a one-operator pilot, one dossier at a time, and the page says so plainly.
Money mathCheck it line by line
Every figureSource or grade
TurnaroundWithin 24h
Your dataHandled directly, no public upload
Watch it work
See a dossier come together.
90 seconds, real product, no slides.
The listing appointment
You are not data-deprived. You are out-presented.
Your board membership gives you every sold record for free. That is not the problem. The problem is the listing appointment. The seller has already been to HouseSigma. They have a number in their head from 2022, and a printout to back it up. Your rebuttal is a REALM screenshot and your reputation. One of those two documents looks more finished than the other, and it is not yours.
The gap is real and it is not closing soon. The Toronto composite benchmark sits about 26.5% below its 2022 peak, and no published forecast closes that gap before the end of the decade. Every one of those conversations is a chance to lose the listing to an agent who over-promises, or to take it at a price that will not sell.
What it does
Your comps in. A reviewed dossier back.
01
You send the comps you already pulled.
Export the sold comps for your subject property from your own board access, the way you do daily, and email the PDF or CSV. PriceProof never sources or resells board data.
02
The engine does the money math.
Time adjustment, a full adjustment grid, and net proceeds at three price points, all computed by deterministic engine code. The math is never guessed. Every comp carries a provenance grade so you can see how solid each number is.
03
A person checks every file by hand.
Before anything ships, the operator reviews the whole dossier. This is a reviewed document, not an automated export.
04
A branded dossier comes back in about a day.
It goes only to the agent who supplied the comps. You walk into the appointment with a document that reads like a working paper, not a screenshot.
One score, five categories, every input traceable.
Why bother
Stop defending a price with a screenshot.
Do nothing, and the listing appointment stays a contest between your judgment and a consumer printout that looks more official than it is. You either lose listings you should win, or you win them at a price that sits on the market.
The checkable part
The money math runs on a deterministic engine covered by 183 tests, and the engine only does arithmetic. The research step gathers facts; it never invents a sold price and never estimates value from list prices alone. Every figure in the dossier carries a source or a grade. A number with neither does not ship.
Honest note: PriceProof is pre-pilot. No clients yet, no testimonials, no logos. It is built and run by one person in Cambridge, Ontario.
The obvious objection
"I already have MLS. Why would I pay for comps I can pull myself?"
You are not paying for the comps. You have those. You are paying for the graded, reviewed document you hand the seller, so their HouseSigma printout stops being the most finished piece of paper in the room. PriceProof never touches board data you did not send.
When to use it
The night before the appointment.
Before a pitch
The night before a listing appointment, so the finished document is yours.
The 2022 number
The moment a seller quotes you a price anchored to the last peak.
A stalled deal
When you need a defensible case for a price reduction.
Rush lane
Send the comps by 10:00 in the morning and, where the rush lane is open, the dossier can come back the same evening.
Questions, answered
Plain answers.
What does PriceProof actually do?
You send the sold comps you already pulled from your own board access, as a PDF or CSV. PriceProof runs the time adjustment, adjustment grid, and net-proceeds math on that data, an operator reviews the whole thing by hand, and you get back a branded, source-cited pricing dossier in about a day.
Who is it for?
Listing agents who need a document that beats the seller's HouseSigma printout at the kitchen table. It is built around Ontario listing appointments, one dossier at a time.
Where does my data go when I try the demo?
PriceProof is a private pilot right now, not a public app — there is no demo or upload form on this site. Your comps and listing data are handled directly with us as part of setting up a dossier, not through any public tool.
Do I need an account? Is it free to look?
There is no account and nothing to sign up for on this page. Booking a walkthrough costs you nothing; it is a conversation to see a real dossier and decide if it fits your listing appointments.
Does it use AI to make decisions?
No. The money math runs on a deterministic engine covered by 183 tests — it only does arithmetic, and it never guesses at a number. Every figure in the dossier carries a source or a grade, and a person reviews the whole file before it ships.
What does it NOT do?
It does not source or resell board data — you supply the comps from your own access. It is pre-pilot: no clients yet, no testimonials, no logos, and it is built and run by one person in Cambridge, Ontario, so it is one dossier at a time, not an instant tool.
How do I get this for my brokerage?
Book a 20-minute walkthrough and we will show you a dossier built on a real Ontario address, then talk through how it would fit your listing workflow.
Get started
Book a 20-minute walkthrough.
PriceProof runs as a private pilot right now, one operator, no public sign-up. See how a dossier is built on a real Ontario address and decide if it belongs in your listing appointments.
Private pilot · solo operator · one client at a time.