🎯 The business: sampling and testing for water, soil, lead, asbestos, radon, mold and indoor air, for homeowners, landlords, schools and businesses who are required to test or want to. Licensed, local, and recurring, because the rules keep making people test again.
Home buyers (radon, well water, lead paint before a renovation), landlords and schools under lead and asbestos rules, contractors before demolition, and businesses with compliance deadlines. A radon test bills $150 to $250, a lead inspection $300 to $600, an asbestos survey $400 to $1,500, well water panels $200 to $500. Commercial and municipal monitoring contracts are the recurring base.
| State certifications (radon measurement, lead inspector or risk assessor, asbestos inspector), training and exams | $2,000 to $5,000 |
| Sampling equipment, meters, radon monitors, XRF lead analyzer (leased) | $5,000 to $25,000 |
| Accounts with accredited labs for analysis | $0, pay per sample |
| LLC, professional and general liability insurance | $3,000 to $5,000 |
| Vehicle lettering, website, inspector referral listings | $1,500 |
| All-in | ≈ $12,000 to $40,000, depending on the services |
Pick two services your state licenses and your region needs (radon in the Midwest and Northeast, lead in old housing stock, well water in rural counties) and get certified in those first. Introduce yourself to home inspectors and realtors; they refer the home-buyer work. Call school districts and property managers about compliance testing. Price per test, with the lab fee built in.
A $200 radon test takes two short visits and a $30 lab or device cost. Four tests and one $500 lead inspection in a day is about $1,300 of revenue. A two-person firm with home-buyer work and a few commercial monitoring contracts commonly reaches $250,000 to $500,000 a year. Add remediation referrals or your own crew and the ceiling rises, with the conflict rules in mind.
State certification for each service (radon, lead, asbestos and mold are licensed in many states), EPA rules for lead and asbestos work, accredited laboratories for the analysis, chain-of-custody procedures, and the conflict rule: in several states the firm that tests may not also remediate the same property.
A missed sample or a broken chain of custody that invalidates a report a home sale depended on. Equipment calibration drifting. Seasonal lumps around home-buying season. A report that becomes evidence in someone’s lawsuit. The firms that last run the procedures exactly, keep the insurance, and build the compliance contracts that do not depend on the housing market.