Older-house risk and inspection interpreter

01Problem

The buyer has days (often 7–10; California default investigation 17; Texas a paid option period) to find defects a seller already lives with. A standard inspection is a visual, non-invasive snapshot, not a code inspection or insurability opinion. Angi 2026 national average general inspection $344 (34,526 projects; typical $296–$425). Waiving inspection or taking seller handyman repairs in lieu of a credit is how buyers inherit active leaks, uninsurable roofs, and Fannie C6 (not deliverable) conditions. UAD 3.6 appraisals become mandatory November 2, 2026 for Fannie/Freddie.

02Intake

Purchase contract: inspection/option deadline, clock time, as-is language, repair-request form.
Year built, additions, permits, seller’s disclosure (Texas § 5.008; Nevada SRPD; lead 1018 on pre-1978).
Full inspection PDF with photos, plus radon, WDI/NPMA-33, sewer-scope, well/septic, four-point, wind-mitigation reports.
Loan type (FHA/VA/conventional/USDA) and appraisal status.
Insurance binder/quote; flood zone (FEMA MSC).
Contractor bids on safety/water/structure items before the written deadline.
Who hired the inspector (buyer vs listing “preferred list”).

03Playbook

01
Calendar the written-notice deadline, not the appointment. Book the general inspection on days 1–3 of a 7–10 day window so specialists and bids still fit. Texas TREC 20-19 ¶5 (effective July 1, 2026): option days are calendar days; notice by 5:00 p.m. local; option fee due in 3 days or the unrestricted out is lost. Silence after the window is acceptance on most forms. Pre-1978: the federal lead risk-assessment window is 10 days and is independent of the state inspection contingency (42 U.S.C. § 4852d).
02
Triage in this order. (1) Life-safety; (2) active water; (3) structure/foundation displacement; (4) electrical that will not clear a fault or will not bind insurance; (5) heat/HVAC that fails occupancy tests; (6) sewer/septic; (7) roof function (active leaks). Cosmetic items and “near end of life” without functional failure are weak chips. InterNACHI: end of useful life is not, by itself, a material defect. ASHI does require reporting systems that are significantly deficient, unsafe, or near the end of service life.
03
Read the house by era — these years are the screening grid.
- Lead-based paint — built before 1978. Federal disclosure, EPA pamphlet, 10-day risk-assessment right (42 U.S.C. § 4852d; 40 CFR 745). Paint-disturbing repairs must use an EPA RRP-certified firm. Knowing violations carry civil penalties and treble damages to the purchaser.
- Asbestos — commonly 1930s–1970s (pipe wrap, vinyl tile, popcorn ceiling, transite siding, duct wrap). EPA: no federal “asbestos-free” clearance; intact material is often managed in place; disturbance is the hazard (40 CFR 61 Subpart M for demo/renovation).
- Knob-and-tube — typical ~1880s–1940s. Two-wire, no equipment ground. Many insurers restrict or decline. Partial updates that leave K&T in walls remain a disclosure and insurance problem.
- Galvanized steel water pipe — typical ~1950s–1960s. Scale, low pressure, pinholes, lead-solder joints on connected copper. Angi 2026 replumb: $1,500–$15,000 (marketplace range, not a government price).
- Polybutylene (PB) — roughly 1978–1995 (“gray pipe,” acetal fittings). Class-action history (Cox v. Shell); no CPSC recall of PB as a product class was located. Do not call it “recalled.”
- Cast-iron drain / clay sewer — pre-1970s common. Camera from cleanout to the main. Angi 2026: sewer camera about $995; sewer replacement average $3,319 (1,037 projects). Deep urban laterals run far higher; use the local bid.
- Aluminum branch wiring — about 1965–1973. CPSC Publication 516: overheating at connections. Remedies: COPALUM or approved AlumiConn-type connectors, or rewire. Do not “pigtail” with unlisted wirenuts.
- FPE Stab-Lok and Zinsco/Sylvania panels. CPSC Release 83-008 (revised February 18, 2011): FPE investigation closed without a safety determination or recall. Zinsco: no CPSC recall located. Angi 2026 panel projects: $518–$2,193 (9,551 projects); a full 200A upgrade costs more; bid it.
- Foundation / settlement. InterNACHI must report possible movement (sheetrock/brick cracks, out-of-square doors, unlevel floors). Angi 2026 foundation add-on $600. Repair is a structural-engineer + bid item.
- Chinese drywall — 2001–2009 Gulf rebuilds. CPSC identified H2S emission up to 100×; >90% of 2010 incident reports from FL/LA/MS/AL/VA.
04
Separate SOP-mandatory items from add-ons. InterNACHI/ASHI general inspections do not include radon, lead, WDI, sewer, septic, well, mold, asbestos, USTs, or pools unless contracted. Angi 2026 add-ons: radon $250, pests $125, mold $660, sewer/plumbing $575, electrical $340, foundation $600. On a pre-1970 house, budget general + sewer-scope + radon as the default package.
05
Loan-blocking vs credit-worthy. Fannie B4-1.3-06 (06/04/2025): C6 is not eligible for sale to Fannie Mae; repair to at least C5 before delivery. B4-1.2-05 “subject to” examples: foundation settlement, water seepage, active roof leaks, worn roof shingles, inadequate electrical or plumbing. Freddie § 5605.5: C5 and C6 must be cured before delivery. A credit cannot paper over those items on a GSE loan — seller repair + 1004D, or walk. UAD 3.6 (mandatory November 2, 2026) requires the appraiser to note defects affecting soundness/structural integrity — use that vocabulary in the repair request.
06
Credits vs seller repairs vs price cuts. Prefer buyer-controlled repair over seller handyman, especially on pre-1978 paint-disturbing work (EPA RRP). Prefer a price cut when cash-to-close is fine and the IPC cap is tight; prefer a closing-cost credit when cash is the constraint. IPC caps: Fannie 3/6/9% of lower of price or value by LTV (>90% 3%; 75.01–90% 6%; ≤75% 9%); FHA 6% of sales price (cannot fund MRI); VA unlimited ordinary closing costs + 4% concessions; USDA 6%. A $15,000 credit on a 5% down $400,000 conventional purchase is 3.75% — over the 3% Fannie cap.
07
Holdbacks are for minor items only. Safety/soundness/structure must be completed and verified (1004D) before the loan is sold. New-construction postponed items: complete within 180 days; escrow 120% of estimate.
08
Radon and lead are federal numbers. EPA action level 4.0 pCi/L (page updated October 13, 2026). Mitigation: EPA Consumer’s Guide $800–$2,500. EPA: no federal mold concentration standard; visible mold + moisture source is the decision rule.
09
WDI when the loan requires it. NPMA-33 for HUD/VA in most of the country; state form in AL, AZ, CA, FL, GA, HI, LA, MD, MS, NV, NC, OK, SC, TX. HUD Termite Treatment Exception Areas include AK, ID, ND, OR, WA statewide plus named counties.
10
Insurability in parallel. InterNACHI SOP does not determine insurability. Florida: four-point commonly required on older homes; wind-mitigation form OIR-B1-1802 Rev. 04/26 effective April 1, 2026; Citizens: 4-point on properties >20 years. Call the insurer before the inspection deadline on FPE/Zinsco, polybutylene, knob-and-tube, old roof, aluminum wiring, Chinese drywall.
11
Ethics-screen the inspector. ASHI and InterNACHI: 12-month ban on the inspector (or the company) bidding repairs on the inspected home; no compensation to realty agents for referrals. Do not call FPE or polybutylene “recalled.” Iowa (July 1, 2025), Montana and Utah (January 1, 2026) newly license; verify the state board.

04Checklists