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San Mateo County, CA Rental Property Rules: Repairs & Habitability (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger
County declares unit substandard
Permanent displacement pay
3x HUD Fair Market Rent
Immediate vacation add-on
$1,000 extra payment
Lease waivers
Void, against public policy
Nonpayment remedy
County pays, then liens property

Summary

Unincorporated San Mateo County landlords must pay relocation benefits to tenants displaced when code enforcement declares their rental unit substandard or unsafe, under Chapter 3.108.

City-specific rules exist: Redwood City has its own repairs & habitability rules that differ from San Mateo County's county-level regulations. If you live in Redwood City, check the city-specific page instead.

A tenant household shall be eligible for relocation payments from a property owner under this chapter if the tenant household is displaced from its dwelling or room due to the County's code enforcement activities.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 47).

Full Breakdown

Chapter 3.108 doesn't set habitability standards itself, but it attaches real consequences once a county Enforcement Officer issues a notice to vacate, a notice to abate a life-threatening condition, or a declaration of substandard condition against a rental dwelling or room. A displaced tenant household becomes eligible for a relocation payment from the property owner: three times the HUD Fair Market Rent for permanent displacement, plus moving costs, or actual moving and temporary housing costs for temporary displacement, with a $1,000 add-on for immediate vacations. Lease clauses waiving these rights are void, and the County can pay the tenant and then lien the property if the owner doesn't.

Violations & Fines

Failing to pay required relocation benefits before the tenant vacates lets the County pay on the owner's behalf and later record a lien against the property to recover the cost.

Frequently Asked Questions

Does this chapter set the habitability standards themselves?
No. Chapter 3.108 addresses relocation payments after a separate code-enforcement declaration of substandard or unsafe conditions, not the underlying building standards.
How much must a landlord pay a displaced tenant?
For permanent displacement, three times the HUD Fair Market Rent for a comparable unit plus up to $1,000 in moving costs, per Section 3.108.090(a).

Sources & Official References

Other rules in San Mateo County

All San Mateo County rules

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