Selling a House With Mold: Disclosure, Repairs and Paperwork

Last reviewed 2026-10-30

Yes, you can sell a house with mold, but what you have to tell buyers depends on your state, and a buyer’s inspector may note visible mold either way. Two official examples: New York’s required seller disclosure form (DOS-1614-f, required since July 1, 2025) asks whether the property has been tested for indoor mold and, if so, to attach the report; Texas rules require a seller to give the buyer copies of every Certificate of Mold Damage Remediation issued for the property in the past five years. Your main choice is between fixing the mold and its moisture source before listing (and keeping the paperwork) or selling as-is. Laws vary by state, so ask a real estate attorney or agent before you decide what to disclose.

This page is general information, not legal advice.

Disclosure basics (general information)

Seller disclosure rules are set state by state. Here is what two states’ official texts say about mold:

New York. Real Property Law §462 says every seller of residential real property covered by the law “shall complete and sign a property condition disclosure statement” and deliver it to the buyer or buyer’s agent before the buyer signs a binding contract (section 463 lists exceptions). The law covers one- to four-family homes; the form’s definition of residential real property excludes condominium units and cooperative apartments.

The current form is the Department of State’s Property Condition Disclosure Statement, DOS-1614-f (Rev. 02/25), which the Department says is required beginning July 1, 2025. Its environmental section tells sellers it will ask about items including “indoor mold,” and two questions are relevant after a leak or mold problem:

“Has the property been tested for indoor mold?” (If yes, the seller attaches a copy of the report.)

“Is there any rot or water damage to the structure or structures?” (If yes, the seller explains.)

The form also says it “is not a warranty of any kind” by the seller and “is not a substitute for any inspections or tests.” (Law text as shown on the NY Senate site, last revised July 4, 2025.)

Texas. Under Texas mold rules (16 TAC §78.150, amended effective September 1, 2018): “If a property owner sells the property, the property owner shall provide to the buyer a copy of each Certificate of Mold Damage Remediation issued for the property under this section during the five years preceding the date the property owner sells the property.” Texas’s licensing agency, TDLR, lists failing to do this as a property owner violation (Occupations Code §1958.154(b)).

Everywhere else: rules and forms differ. Ask your agent which disclosure form your state uses, and ask a real estate attorney how mold, past remediation or an old test report should be handled on it.

Fix before listing or sell as-is?

We couldn’t find reliable data on how much mold changes a sale price, so we don’t quote one. These are the factors the sources do speak to:

	Fix and document before listing	Sell as-is
Cost to you now	This Old House (data mostly from Angi): average professional remediation about $2,300; most jobs $1,200–$3,750; basement $500–$3,000; attic $1,000–$4,000	None up front
The moisture source	Fixed as part of the job. The EPA says that if you clean up mold but don’t fix the water problem, “most likely, the mold problem will come back.”	Not fixed by you
What a buyer gets	Paperwork: scope, invoices, photos, and in Texas a certificate	Your state’s disclosure form plus their own inspection
Disclosure	Past remediation may still need to be disclosed, depending on your state (Texas example above)	Disclosure rules still depend on your state

Ask a real estate attorney or agent how an as-is sale works with your state’s disclosure rules. If you do remediate, the EPA suggests hiring a contractor with mold experience, checking references and asking the contractor to follow EPA or other professional remediation guidelines. Mold remediation cost shows typical prices by location and size, and the Mold Check can tell you whether your situation looks like a small cleanup or a professional job.

What a buyer’s inspection may turn up

Visible mold and water stains. In Texas, TDLR says a real estate inspector “does not need a mold license to visually observe and note the presence of mold.”
Signs of hidden mold. The EPA says you may suspect hidden mold “if a building smells moldy, but you cannot see the source.” Places the EPA lists include the back of drywall, the underside of carpets and pads, around leaking pipes and inside ductwork.
Sampling, if the buyer orders it. In Texas, collecting air or spore samples counts as “mold assessment,” so a home inspector who takes them must hold a Texas mold license (TDLR). The EPA notes there are no federal limits for mold, so sampling “cannot be used to check a building’s compliance with federal mold standards,” and that “in most cases, if visible mold growth is present, sampling is unnecessary.”

If you’d rather know before a buyer does, a mold inspection can find the extent and the moisture source; mold testing is a separate service.

Negotiation: what helps your side

Things you can put on the table:

The cause and the fix: the leak or humidity problem, who repaired it and when.
The remediation scope and invoice from the contractor.
Post-remediation results, if you have them. This Old House notes that homeowners “may opt for third-party air quality testing after remediation,” though it’s not always required, and the EPA says surface sampling “may be useful to determine if an area has been adequately cleaned or remediated.”
In Texas, the Certificate of Mold Damage Remediation. Texas Insurance Code §544.303 (added 2005, amended 2007) says an insurer “may not make an underwriting decision regarding a residential property insurance policy based on previous mold damage or a claim for mold damage” if the property is eligible for coverage under a residential property policy, had mold damage and had mold remediation performed, and was either remediated “as evidenced by a certificate of mold remediation… that establishes with reasonable certainty that the underlying cause of the mold at the property has been remediated,” or an independent assessor or adjustor found it “does not contain evidence of mold damage.” A buyer can ask their insurance agent how this applies.

How a credit, a price change or a repair request should be written into the contract is a question for your agent or a real estate attorney.

Documents to keep after remediation

Contract and scope of work from the remediation company, plus invoices.
Before-and-after photos. In Texas, a licensed remediation contractor must give the owner copies of required before-and-after photographs within ten calendar days after the project stop-date (16 TAC §78.150).
Certificate of Mold Damage Remediation (Texas), delivered within the same ten calendar days. Texas sellers must pass on certificates issued in the five years before the sale.
Clearance or post-remediation test reports, if any. In New York, if the property has been tested for indoor mold, the disclosure form asks you to attach the report.
Repair records for the moisture source: plumber, roofer or drainage invoices.
Insurance claim file, if a claim was involved — see does homeowners insurance cover mold?

How serious is your mold? Take the Mold Check

Next step: get an on-site assessment from a licensed mold remediation professional.

Ask for a written scope that covers the moisture source, containment, removal, and how they will confirm the job is done.

Sources

Health and safety. Mold can affect health, especially for people with allergies, asthma, or weakened immune systems. This site does not give medical advice — for health concerns talk to a doctor. For mold removal, contact a licensed mold remediation professional (licensing rules vary by state).