Local guide
Mold in Portland, Oregon
Portland’s wet-season repair plan should distinguish rain entering the building from moisture condensing indoors. Property Compliance accepts code reports and prioritizes cases by severity, so describe an active hazard clearly.
Local resource reviewed: 2026-10-10
Oregon legal sources reviewed: 2026-05-04
Start With Your Portland Property
Inspect the rain-facing window and roof junction above any new stain, then check lower walls and accessible crawlspace entries from outside. If the problem appears only during heating weather, record room humidity and exhaust-fan operation as well as visible damage.
Portland Property Compliance Services and Inspections
Portland accepts and reviews code complaints and prioritizes health, safety and emergency concerns. The city page links reporting, case-status and complaint-type contact options.
Before you contact them:Identify the occupied unit, the water source if known, and why the condition is urgent. Retain the report number and ask about inspection access; use the complaint-type directory to avoid sending a housing issue to the wrong program.
Open the official local resource
Local resource reviewed 2026-10-10. An agency inspection or complaint does not replace the repair request to your landlord.
Choose Your Next Action
Clues to Record
These observations help direct an inspection; they do not identify mold type, hidden extent or a medical cause.
- New dampness or growth at a location that was recently cleaned or repaired.
- A recurring musty odor near a previously wet wall, floor or cabinet.
- Soft, swollen or separating material, or staining that expands after water use or weather changes.
Guidance: EPA cleanup decisions | CDC cleanup precautions
Plan the Work and Compare Bids
Record the affected areas, source repairs, containment, material removal and completion checks before comparing contractors. This planner organizes the scope; it does not predict a local price or replace written bids.
State Laws and Rights
Check Oregon notice requirements and the coverage of your tenancy before using a rent remedy or ending a lease. The local reporting contact above can address only the issues within its stated scope.
Oregon mold law snapshot
Oregon does not have a mold-specific statute, but habitability rules still apply.
Oregon law establishes a statutory warranty of habitability under ORS 90.320. A dwelling is considered uninhabitable if it substantially lacks: effective waterproofing and weather protection of roof and exterior walls; plumbing facilities in good working order; adequate water supply capable of producing hot and cold water; adequate heating facilities; electrical lighting with wiring in good working order; buildings and grounds that are safe, clean, sanitary, and free from debris, filth, rubbish, garbage, rodents, and vermin; and safety from fire hazards including working smoke alarms. While mold is not explicitly mentioned, these habitability requirements address the underlying conditions that cause mold growth, and severe mold can render a unit unsafe or unsanitary.
Use the full Oregon guide for tenant rights, landlord responsibilities, and remedies.
Repair Notices and Rent Decisions
Start with these Oregon rules, then check the local regulations section and your property's coverage. A statutory notice period is not always a deadline for finishing every repair. Keep proof of notice and get local legal advice before changing rent payments or ending a lease.
How long does a Portland landlord have to fix mold?
No universal mold-specific repair deadline was confirmed for Oregon in the sources reviewed for this guide. Treat timing as notice-and-condition specific: document the mold and moisture source in writing, use the cited habitability or repair source, and get local code enforcement or legal aid advice before treating any deadline as fixed.
Sources: Oregon Revised Statutes 90.320
Can Portland tenants withhold rent for mold?
Under ORS 90.365, if a landlord fails to supply an essential service (such as water, heat, or effective weatherproofing), tenants may pursue several remedies after giving written notice and allowing reasonable time to cure. Tenants may: (1) procure the essential service and deduct the cost from rent; (2) recover damages based on diminished rental value; or (3) if the failure makes the unit unsafe or unfit to occupy, procure substitute housing and be excused from paying rent during the landlord's noncompliance. For imminent threats to health or safety, tenants may terminate with 48 hours notice. However, rent withholding is risky and should be done with legal guidance.
Sources: Oregon Revised Statutes 90.365 | Oregon Revised Statutes 90.320
Does mold in Portland require relocation?
Unclear as a standalone statewide mold relocation benefit in the sources reviewed for this guide. If mold or remediation makes the unit unsafe or unusable, Oregon tenants should look to the cited habitability, essential-services, condemnation, disaster, or lease-termination rules and ask legal aid whether rent abatement, substitute housing, temporary vacancy, or termination applies.
Sources: Oregon Revised Statutes 90.320 | Oregon Revised Statutes 90.365
Does mold have to be disclosed in Portland?
Oregon does not have a specific requirement for landlords to disclose the presence of mold to prospective or current tenants. However, under general disclosure principles in ORS 90.275 and ORS 90.305, landlords must inform tenants of known conditions that could affect health or safety. Additionally, property sellers must disclose the presence of mold when selling a property. Some Oregon municipalities, particularly in areas with high humidity or frequent mold issues, may impose stricter disclosure requirements.
Sources: Oregon Law Help - Renter's Handbook on Mold | Oregon Revised Statutes 90.320
Local Regulations
If your city has additional property-maintenance or code-enforcement rules, start here before filing complaints or making escalation decisions.
Frequently Asked Questions
These FAQs cover the questions readers usually ask next in Portland: what to do first, when to test, and how local mold problems connect back to Oregon law.
Who can help with a housing-condition complaint in Portland?
What should I inspect first at my home in Portland?
What are the first signs of mold in Portland homes?
When should I hire a mold professional in Portland?
What should I inspect during wet weather in Portland?
What should I do about mold after a Portland storm?
Cleanup and testing guidance: EPA cleanup guidance | EPA sampling guidance | CDC cleanup precautions
Reference Data and Limits
Reference Sources for Portland
These are selected reference-location outdoor and housing-stock inputs. The station does not necessarily represent every neighborhood or elevation in the city. They are not indoor measurements, a mold-growth forecast, or evidence about a particular building. The humidity-month list is a Mold Compass threshold screen, not a NOAA-defined mold season.
Sources: [NOAA precipitation normal, 1991-2020] | [NOAA reference-station outdoor relative-humidity normal (PORTLAND-HILLSBORO AP, OR US); 1991-2020] | [US Census ACS median structure year for Portland city, Oregon (place GEOID 4159000; exact-place); 2024 ACS 5-year]
Official Resources
Use these official agencies, program links, and state resources when you need primary sources instead of general advice.
Need Help Paying for Repairs?
Find Oregon repair-assistance contacts, financing programs and legal referrals, with eligibility and service limits.
View Oregon Assistance ProgramsLocal Extension Resources
University extension programs often publish research-based prevention and cleanup guidance.
View Oregon Extension Resources