New Water Conservation Requirements for Homeowners
San Francisco is introducing a new set of water conservation requirements that could affect many homeowners and real estate transactions across the city. Starting May 15 2026, the Department of Building Inspection (DBI) will enforce stricter standards under Section 12A.10 of the San Francisco Building Code, potentially adding new costs and complications for sellers.
Who Is Impacted
These changes apply broadly across the residential market:
Sellers of residential properties in San Francisco.
Buyers and agents involved in transactions requiring water conservation inspections.
Homeowners who previously upgraded fixtures to meet earlier standards.
The requirements come into play during mandatory water conservation inspections prior to the transfer of title or sale.
What Is Changing
The updated rules tighten allowable water usage for common household fixtures:
Showerheads and faucets must now have a maximum flow rate of 1.8 gallons per minute, replacing older standards that allowed higher-flow fixtures.
Toilets must meet a maximum flush volume of 1.28 gallons per flush, meaning many 1.6 GPF toilets that were previously compliant may now need replacement.
Exemptions
There are limited cases where exemptions may apply:
Sellers may request an exemption if replacing a toilet would detract from the historical integrity of the property.
Exemptions may also be available for showerheads needed for medical reasons.
Why It Matters
These changes may create unexpected costs for sellers, especially those who recently upgraded to earlier standards and now face another round of replacements. They also raise environmental concerns because functioning fixtures may need to be removed and discarded.
This update also fits into a larger trend: many homeowners are already seeing insurance-related pressure to install smart water leak detection and monitoring systems, so San Francisco’s new fixture rules are part of a broader shift toward water-risk prevention. In practice, that means sellers may face both fixture compliance issues and insurance-related expectations at roughly the same time.
Action Required
If you’re planning to sell, it’s smart to evaluate existing fixtures early in the process and plan for potential upgrades before listing a property. That can help reduce delays, avoid surprises in escrow, and give sellers time to address compliance issues in advance.
What’s Next
The San Francisco Association of Realtors is actively advocating at City Hall and with DBI to delay implementation, push for more practical alternatives, and raise concerns about the financial and environmental impacts. Members will be kept informed as the advocacy effort moves forward.
Read more on the Ordinance Here
