How homeowners are matched to contractors
Matching in this network is deterministic rather than algorithmic. There is no bidding, no scoring model, and no pay-to-rank position — the routing is a function of geography, coverage claims, and rotation.
Here is exactly how a request finds its way to a contractor.
Step one: ZIP resolves to a territory
The homeowner enters the property ZIP and it resolves against the territory index immediately. Every supported ZIP maps to exactly one routing territory, and a build-time invariant fails the build if any ZIP ever appears in two — which means a request can never be ambiguous about which county owns it.
If the ZIP is not covered, the homeowner is told so and no request is generated. Those are not routed to the nearest contractor and hoped for.
Step two: qualification decides whether it dispatches
The reported result band and transaction context determine dispatch. At or above 4 pCi/L dispatches. Between 2 and 4 dispatches when a transaction is active. Below 2 and untested do not dispatch at all.
This happens before contractor selection, so an unqualified request never enters any contractor's queue in the first place.
Step three: contractors covering that territory
The candidate set is contractors who have claimed that county in their coverage and hold the credential their state requires. Nothing else narrows it — not payment tier, not tenure, not a quality score.
Step four: rotation, capped at three
Assignment rotates through the eligible roster rather than always starting at the top of an alphabetical list, and it stops at three. That rotation is the mechanism that keeps a capped roster fair over time instead of concentrating every request on whoever happens to sort first.
If a territory has fewer than three eligible contractors, the request goes to however many exist. It is never padded out with contractors from an adjacent county who did not claim that coverage.
What happens when nobody is available
If a territory has no eligible contractor, the request is flagged for manual review rather than silently discarded or routed to someone who does not serve the area. Nothing about the homeowner's experience fabricates a successful match that did not happen.
That is the same principle as the ZIP refusal: the system would rather report an honest gap than manufacture a result.
How we match homeowners: contractor questions
Can I pay to be first in the rotation?
No. There is no priority tier, no featured placement, and no bidding for position. Rotation exists specifically so that a capped roster distributes fairly, and selling out of it would defeat the reason contractors find a capped roster worth joining.
What if I am the only contractor in a territory?
Then requests from that territory go to you alone, because the cap is a maximum rather than a target. The roster is not padded with contractors from neighbouring counties who did not claim that coverage, so a thin territory stays thin until another qualified contractor claims it.
Do you route the same homeowner to me more than once?
A homeowner who submits once generates one request. If someone submits again later — a different property, or a re-engagement after time has passed — that is a new request and goes through the same routing. The cap applies per request, not per lifetime.
More for contractors
- Territory philosophy — County-level territories, capped rosters, and honesty about exclusivity.
- Lead qualification process — Six checks every request passes before a contractor sees it.
- Service area expectations — Claim honestly, respond consistently, keep credentials current.
- Contractor FAQ — Costs, exclusivity, volume, credentials, contracts — answered plainly.
State requirements
Credentialing and disclosure rules differ by state, and each state page states the credential we verify before routing anything to you.
ZIP to territory, qualification, coverage claim, rotation, cap at three, and an honest flag when nobody is eligible. There is nothing else in the matching logic.
Sources
- U.S. EPA — Radon
- U.S. EPA — Consumer’s Guide to Radon Reduction
Get into the rotation for your counties
Send your credential number and the counties you serve. Verification comes first, then routing.