Every real construction project leaves a paper trail before the first truck shows up: a permit. For contractors, that permit is one of the highest-intent leads available — it means a specific project, at a specific address, is funded and scheduled. This guide covers where permit data comes from, how to read it, and how to turn it into booked work.

Why building permits are better leads than shared leads

Shared-lead platforms sell the same homeowner inquiry to several contractors at once. You pay per lead, you compete on price against three or four others, and a large share of those inquiries never had real budget behind them.

A building permit is the opposite:

Where building permit data comes from

Building permits are issued at the local level — city, township, or county building departments — not the state. In Southeast Michigan that means dozens of separate jurisdictions, each with its own system:

How to read a building permit

A typical permit record includes the address, the permit type (building, mechanical, electrical, plumbing, demolition), the description or scope, the estimated job cost, the applicant or contractor, the owner, and the issue date. The two fields that decide whether a permit is a good lead: scope (is this the kind of work you do at the size you want?) and applicant (is a competitor already named, or is it open?).

A step-by-step process for permit-based lead gen

  1. Define your box. Trades and scopes you want, job-size range, and the exact cities or counties you will drive to.
  2. List your jurisdictions. Every city and township in your service area, plus their permit-lookup method.
  3. Pull new permits on a schedule. Daily is ideal; weekly at minimum. Filter to your scope.
  4. Score and prioritize. Rank by value, by “no contractor named,” and by time-sensitivity.
  5. Reach out fast. A letter or door hanger for homeowner-pulled residential permits; a call or email to the GC for new-construction and commercial permits.
  6. Track it. Log every permit, contact attempt, and outcome so you learn which permit types actually convert for you.

What to say when you reach out

The catch — and how to solve it

Doing this by hand across a real Southeast Michigan service area means checking 15 to 40 separate portals every day, each with a different interface. Most contractors start strong and quit within a month.

That is what Build Siren does automatically: it monitors building, mechanical, electrical and plumbing permits across Wayne, Oakland, Macomb and Washtenaw counties, filters to your trade, scores each lead, and emails you one report every weekday morning in HTML, PDF and CSV.

FAQ

How much do permit leads cost compared to shared leads?

A single shared lead can run $50 to $150 and is sold to multiple contractors. A permit-monitoring subscription for a whole metro and trade starts around $99/month with unlimited permits.

Are permit leads only for new construction?

No. Re-roofs, HVAC changeouts, water heaters, panel upgrades, remodels and additions all pull permits.

How soon after a permit is issued should I reach out?

Within a few days. For homeowner-pulled permits the decision window is often still open; for GC-pulled permits, subs get awarded fast.

Related

Are Building Permits Public Record in Michigan? · Permit-to-Bid: Winning Jobs Before Your Competitors Call · Permit leads by trade

Request access to Build Siren — daily permit leads for Southeast Michigan contractors, from $99/month. Call (248) 290-8979.