Control the moisture. Report the source.
Preserve repair duties.
Set ventilation, housekeeping and prompt moisture-reporting expectations while preserving the landlord’s investigation, repair and nonwaivable habitability responsibilities.
- Prevention responsibilities
- Prompt written reporting
- Cause-based allocation
How it works
From the existing lease to a signed mold & mildew addendum both parties can keep
- 01
Inspect the property terms
Review the actual building and legal duties.
- 02
Define prevention practices
Use reasonable, unit-specific expectations.
- 03
Create the reporting path
Make early notice easy and documentable.
Last updated August 20, 2026
Written by LawLease EditorialReviewed by LawLease Legal Team
By lease document
Documents related to the mold & mildew addendum
A mold and mildew addendum supplements a lease with practical moisture-control, ventilation, cleaning and reporting duties. It creates a communication and prevention process without guaranteeing air quality, diagnosing health conditions or shifting nonwaivable building and habitability duties to the tenant.
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What is a mold & mildew addendum?
A mold and mildew addendum supplements a lease with practical moisture-control, ventilation, cleaning and reporting duties. It creates a communication and prevention process without guaranteeing air quality, diagnosing health conditions or shifting nonwaivable building and habitability duties to the tenant.
This document is also called:
- Mold prevention addendum
- Moisture control agreement
- Mildew lease addendum
- Mold notification addendum
This document supplements the signed residential lease agreement and should be read with all other valid addenda.
Habitability, repair and responsibility rules
Mold rules vary by state and locality, and general habitability, building-code, disclosure and repair laws may apply even where no mold-specific statute exists. An addendum cannot waive duties the landlord must perform or make the tenant responsible for building defects.
Responsibility should follow reliable evidence of cause and failure to perform a legal duty. Prompt reports should trigger inspection and appropriate repair, not automatic blame; residents should not disturb suspect material or use unsafe treatment methods.
Written scope
with the property, parties and covered conduct identified
Local rules
checked before terms are signed or enforced
Complete record
kept with notices, reports and supporting evidence
- Address water first
- Leaks, drainage, plumbing, envelope and ventilation defects require prompt investigation and repair rather than surface cleaning alone.
- Set practical resident duties
- Describe reasonable ventilation, exhaust-fan use, housekeeping, temperature control and moisture cleanup based on the actual unit.
- Require prompt written reports
- Identify the contact and reporting method for leaks, condensation, odors, staining or visible growth and keep the communication record.
- Preserve landlord obligations
- Do not use the addendum to disclaim code, repair, disclosure, retaliation or habitability duties.
- Avoid medical and causation claims
- Document observations and professional findings; do not diagnose illness or assign liability solely from the presence of discoloration.
How to prepare a mold & mildew addendum
Five checks turn the policy or disclosure into clear signed paperwork.
Review the actual building and legal duties.
- Lease and condition records
- Ventilation and exhaust equipment
- State and local disclosure rules
Free sample mold & mildew addendum
This sample shows the prevention and response structure before you start. Your answers supply the actual property features, reporting contact and agreed practices.
Mold & Mildew Addendum
LEASE AND PROPERTY. This addendum supplements the lease dated for .
PREVENTION. Tenant will use provided ventilation and exhaust equipment, maintain reasonable housekeeping and promptly remove ordinary surface moisture.
REPORTING. Tenant will promptly report leaks, water intrusion, persistent condensation, musty odors or suspected growth to by .
LANDLORD RESPONSE. Landlord will evaluate reported conditions and perform duties required by the lease and applicable repair, code and habitability law.
NONWAIVER. Responsibility depends on facts and applicable law; this addendum does not waive nonwaivable rights or predetermine the cause of a condition.
Questions about this mold & mildew addendum?
Real humans read every message. For active water intrusion, extensive growth, health concerns or disputed responsibility, use qualified remediation and local legal guidance.