Columbus Home Seller Disclosure Requirements (2026)
Ohio's Residential Property Disclosure Form is mandatory. Columbus and Franklin County sellers need to pay particular attention to basement water intrusion (common in Ohio's housing stock), radon, and the growing Intel employment corridor affecting submarkets.
Ohio's Residential Property Disclosure Form
Ohio Revised Code §5302.30 requires sellers to provide the Residential Property Disclosure Form to buyers. If provided before contract: buyers acknowledge receipt in the contract. If provided after contract signing: buyers have 3 days to rescind.
The form requires sellers to disclose known issues across all major property systems and conditions. Ohio's "known" standard means you're not expected to investigate — but you cannot conceal conditions you're aware of.
Basement Water Intrusion — Ohio's Most Common Disclosure Issue
Ohio's geology and climate create persistent basement water intrusion issues. Franklin County's soil types, combined with winter freeze-thaw cycles and spring rainfall, mean many Columbus-area homes have experienced basement seepage, sump pump activation, or minor flooding.
What must be disclosed:
Don't assume "it's fixed" = no disclosure required: If you had waterproofing work done, you still disclose the prior issue and the remediation. The disclosure protects you — it shows you addressed the issue.
Radon in Franklin County
Ohio is a moderate radon risk state. The EPA designates portions of Ohio including Franklin County as Zone 2 (predicted average indoor radon levels 2–4 pCi/L) with some portions at Zone 1. The Ohio RPDF asks specifically about radon.
Disclose any radon testing results. If you've never tested and the property has a basement or below-grade living space, buyers may request radon testing during inspection. A test kit ($15–$30 at hardware stores) before listing removes uncertainty from the transaction.
Mitigation systems, if present, should be disclosed — they're a positive indicator of a seller who identified and addressed the issue.
Underground Oil Tanks
Older Columbus housing stock (pre-1970 homes in Clintonville, Linden, Franklinton, German Village, and University District) may have underground or above-ground heating oil tanks that were abandoned when homes converted to natural gas.
The Ohio RPDF asks about underground storage tanks. Disclose any known tanks. If you're uncertain, a scan is advisable for pre-1970 homes. Tank removal in Ohio typically costs $1,500–$4,000 for an uncomplicated single tank with clean soil.
Lead Paint in Columbus's Historic Neighborhoods
Columbus has significant pre-1978 housing in:
Federal law requires Lead-Based Paint Disclosure form and EPA pamphlet for all pre-1978 homes. Provide at or before contract execution.
HOA Disclosure in Columbus Suburbs
Dublin, Westerville, Hilliard, Powell, and New Albany have extensive HOA community development. Ohio doesn't have a specific state HOA disclosure statute, but the RPDF's "additional conditions" section is the vehicle for HOA disclosure. Provide HOA documents promptly — CC&Rs, current budget, and any pending special assessments.