Property Conditions and Environmental Hazards
Key Takeaways
- The federal Lead-Based Paint Disclosure rule applies only to target housing built before 1978 and requires the EPA pamphlet plus a 10-day inspection opportunity
- Radon, mold, asbestos, and wetlands are condition issues a licensee must understand even when no federal disclosure form exists
- Radon is measured in picocuries per liter (pCi/L); the EPA action level is 4.0 pCi/L
- Friable asbestos is the dangerous form because crumbled fibers become airborne and inhalable
- Wetlands are federally regulated under the Clean Water Act, and filling or developing them usually requires a permit
Property Conditions and Environmental Hazards
The national portion tests whether a licensee can recognize common environmental hazards, knows which one carries a mandatory federal disclosure, and can separate fact from rumor. You are not expected to be an environmental engineer. You are expected to know when to disclose, when to recommend a professional inspection, and when to stop giving advice you are not licensed to give.
The single most heavily tested hazard is lead-based paint, because it is the one with a specific federal disclosure law. Everything else (radon, asbestos, mold, wetlands) is tested as general condition knowledge and as a reason to recommend a qualified specialist.
Lead-based paint and the federal disclosure rule
Lead was banned from residential paint in 1978. The federal Residential Lead-Based Paint Hazard Reduction Act (Title X) therefore applies to target housing — most housing built before 1978. The rule is enforced jointly by the EPA and HUD.
For any sale or lease of pre-1978 target housing, the seller or landlord (and the licensee) must:
- Give the buyer/tenant the EPA pamphlet "Protect Your Family From Lead in Your Home."
- Disclose any known lead-based paint and provide available records or reports.
- Include a Lead Warning Statement and signatures in the contract.
- Give buyers a 10-day opportunity to conduct a lead inspection or risk assessment (the period can be shortened or waived only by mutual written agreement).
What is exempt
| Property type | Lead disclosure required? |
|---|---|
| Single-family home built 1977 | Yes (pre-1978) |
| Home built 1980 | No (post-1978) |
| Housing for the elderly with no children | Exempt unless a child resides there |
| Zero-bedroom units (studios, lofts) | Exempt |
| Short-term rentals of 100 days or fewer | Exempt |
Trap: the disclosure obligation is not a guarantee that the home is lead-free, and the seller is not required to test for or remediate lead. The duty is to disclose what is known and to deliver the pamphlet and inspection window.
Worked timing example: A contract is mutually accepted on June 1 with no shortened lead-inspection clause. The buyer therefore has until the end of June 11 (10 days) to conduct a lead inspection or risk assessment. If the parties want to compress that window, they must agree to it in writing; a licensee cannot unilaterally waive a buyer's 10-day right.
A related compliance point is the EPA Renovation, Repair, and Painting (RRP) Rule: contractors who disturb painted surfaces in pre-1978 housing must be EPA-certified and follow lead-safe work practices. Violations of the disclosure and RRP rules can trigger civil penalties, so the exam treats lead as the hazard with real teeth behind it.
Radon
Radon is a colorless, odorless, radioactive gas produced by the natural breakdown of uranium in soil and rock. It enters through cracks in foundations and basements and is the second leading cause of lung cancer.
Radon is measured in picocuries per liter (pCi/L). The EPA action level is 4.0 pCi/L — at or above that reading, mitigation (typically a sub-slab depressurization system) is recommended. There is no federal radon disclosure form like the lead rule; radon is handled as a general material-condition issue and through inspection contingencies.
Worked example: A buyer's radon test returns 6.2 pCi/L. Because 6.2 exceeds the 4.0 action level, the licensee should recommend a qualified radon mitigation contractor — not reassure the buyer that the reading is "probably fine" and not personally diagnose the cause.
Asbestos
Asbestos was used in insulation, floor tiles, pipe wrap, popcorn ceilings, and roofing through much of the 20th century. It is dangerous only when fibers become airborne and are inhaled, causing asbestosis and mesothelioma.
The key vocabulary word is friable: friable asbestos crumbles easily by hand and releases fibers, making it the hazardous condition. Non-friable asbestos that is intact and undisturbed is often left in place (encapsulated) rather than removed, because removal can release more fibers than leaving it alone.
Mold
Mold grows where there is moisture — leaks, flooding, poor ventilation. There is no federal mold disclosure standard and no single numeric action level. The licensee's job is to disclose known moisture or mold conditions, recommend a professional assessment, and avoid both downplaying visible mold and overstating its health effects.
Wetlands
Wetlands are areas saturated by surface or ground water, such as marshes and swamps. They are federally protected under the Clean Water Act, administered by the U.S. Army Corps of Engineers and the EPA. Filling, dredging, or developing a wetland generally requires a federal permit, and a buyer planning to build should be warned that wetland designation can sharply limit development.
Three other condition issues round out the topic. Underground storage tanks (USTs) — old fuel oil tanks — can leak and contaminate soil and groundwater. Urea-formaldehyde foam insulation (UFFI), used in the 1970s, can off-gas. And properties near former industrial sites may sit on or near brownfields. In every case the licensee's correct move is the same: disclose what is known, recommend a qualified inspector or environmental professional, and avoid giving expert opinions outside the scope of a real estate license.
| Hazard | Key fact | Tested measure / authority |
|---|---|---|
| Lead paint | Pre-1978 target housing | EPA pamphlet, 10-day inspection |
| Radon | Radioactive soil gas | Action level 4.0 pCi/L |
| Asbestos | Danger when friable | Encapsulate or remove |
| Mold | Caused by moisture | Recommend professional assessment |
| Wetlands | Clean Water Act | Army Corps permit |
A licensee lists a single-family home built in 1972. Which federal obligation applies to the sale?
A radon test on a home returns a reading of 6.2 pCi/L. What is the best action for the licensee?