Measure/Basement waterproofing leads
Territory access · for contractors
Basement waterproofing leads, measured rather than bought
Most basement waterproofing leads are a form fill sold three times. Ours are addresses where we measured the ground against the foundation from remote 3D measurement: which walls have earth tipping toward the house, over how many meters, and how much land upstream drains into that corner.
That is a different product, and it is worth being blunt about what kind. Nobody on this list raised a hand. They are properties whose terrain we measured, in the territory you work, and you are buying the ground rather than the intent.
The one sentence that ships with an address
Everything on this page reduces to a claim we are willing to defend, quoted verbatim from the code that generates it:
"the ground falls toward this structure on 14 m of its walls" measure · drainage · lead signal
Not "this basement leaks". Not "this house needs work". A number of meters of wall, and the direction the ground tips at them.
What this is not
This is not a finding that the property has a drainage problem, a wet basement, or any defect. It is a measurement of ground slope at the walls. Whether water has ever reached this structure was not measured and is not claimed.
Ground falling toward a foundation raises the risk of water reaching it. That is ordinary building science and we will repeat it all day. That a particular house has water is a diagnosis, and this instrument does not make diagnoses.
How a property reaches the list
Three gates, all of which have to pass. They live in one place in the code so nobody re-derives them, and the reason a property was included travels with the property.
- The building was established. Which structure the address names has to be settled. On a list nobody is looking at an aerial photo to catch a wrong one.
- High confidence on that identification. Answers made by proximity alone are the weakest path we have, and they are excluded from lists entirely.
- At least 3 m of wall called as falling toward the structure. Called, not leaning — see below.
The 3 m floor exists because below it the engine is measuring a corner chamfer, and one short segment should not put somebody on a call list.
"Called" is the word doing the work
A published building outline is a trace. It can sit a meter from the wall it claims to be. Shifting a real Pittsburgh footprint north in 0.2 m steps moved one wall from +5.4% to −23.5% — it crossed zero inside 1.4 m, which is less than the outline error our own limits concede.
So the whole footprint is displaced one meter in each of sixteen directions and every wall is measured again. Seventeen positions in all. A direction is printed only when all seventeen agree on the sign.
Walls that lean but do not survive that pass come back as too close to call — with which way they lean and how many of the seventeen agreed, so they are still useful to you — and they do not qualify a property for your list. That is the difference between an address you can drive to and an address that reorders itself the next time somebody re-traces a roof.
What the wall measurement actually is
Not one slope for the property. Each wall gets its own outward normal. The slope is measured from 0.75 m to 3.25 m out from the wall, repeated at several stations along it and combined — so one bad reading, or a wheelie bin, cannot carry a wall on its own.
Nothing is sampled nearer than 0.5 m to a wall. Inside a footprint, a bare-earth surface is not ground; it is the interpolation across a building that was removed.
The reference most waterproofing crews already carry in their heads — a 5% fall over the first three meters — is the target the engine measures against.
What we can stand behind
We publish no headline identification rate, because a single figure would hide the thing that decides whether an answer is safe to use: what identified the building on this address. That travels with every result instead. Where the underlying records are thin the evidence is thin too, and the engine says so rather than guessing harder.
Why we quote no conversion rate
We tested measured terrain against Chicago's 311 basement-water complaints, and it did not separate them. Read carefully that is mostly a verdict on the proxy: an owner who knows their grading is bad pays a contractor instead of calling the city, and when a third of a block reports water in one hour the cause is the pipe under the street. It is not evidence that grade does not matter. It is a reason never to promise you a conversion rate we have not observed.
Anyone selling you waterproofing leads with a conversion figure attached should be asked what they measured it against.
What you pay, and what happens when we are wrong
Territory access starts at $14 per property — 25 for $450, 100 for $1,600, 500 for $7,000, or $35 each to hold a property exclusively to you for twelve months. It is a separate product from the platform plans and is not metered against lookups.
Two commitments that are policy, not goodwill. A refusal is never billed: when we cannot tell which building an address names, we say so and charge nothing. And if the building is wrong, the property is replaced free. We can promise that because the engine measures its own uncertainty and only releases what clears it.
One contractor per territory. We never sell the same property twice, which is what bounds how many territories exist.
See whether your territory is open
Five questions, then a 30-minute market analysis. On the call we go through which ZIPs we hold measurement coverage for, run your own addresses live — including the ones the engine refuses, and why — and talk about how a territory is bounded.
We have never measured how many properties qualify in any market. If a number comes up on the call, it will be one we computed in front of you.
Questions contractors actually ask
Are these leads people who asked to be contacted?
No. They are addresses where we measured the ground at the building. Nobody filled in a form and nobody is expecting your call, so this is outbound work and should be priced and worked as outbound work.
What conversion rate should I expect?
We do not quote one, for the reason set out above. We have not observed a conversion rate and will not invent one.
Does a qualifying property have a wet basement?
Not established, and not claimed. The measurement is ground slope at the walls.
How do you know you have the right building?
The building is identified from the evidence available before anything is measured, and the result says which evidence answered — where none fires, the address is refused rather than matched to the nearest roof. Lists take only high-confidence identifications, and a wrong building is replaced free.
Can I see it on a property I already know?
Yes, and it is the fastest way to calibrate. Put in an address you have already dug at and see whether the walls we call match what you found in the ground. A full report on any property is $25.