San Francisco Soft Story Retrofit: Mandatory Program Compliance Guide
San Francisco's mandatory soft story program has hard deadlines — and most covered buildings are already past the original compliance window. Here is what every SF landlord with a pre-1978 wood-frame building needs to know.
San Francisco's Mandatory Soft Story Retrofit Program (Ordinance 66-13) requires owners of wood-frame soft story buildings built before 1978 to complete seismic retrofits. Buildings are tiered 1-5 by size and use, each with specific permit and completion deadlines. Most Tier 1-3 deadlines have passed. Non-compliant owners face fines and enforcement. Verify your building's status at sfdbi.org and consult a licensed structural engineer immediately if you have not started.
What Is a Soft Story Building?
A soft story building has a ground floor that is substantially weaker or more flexible than the floors above it. In San Francisco's housing stock, this most commonly shows up as a wood-frame building where the ground floor is predominantly open — parking garages, commercial storefronts, or large window openings — without adequate shear walls to resist lateral earthquake forces.
During a major earthquake, the weak ground floor cannot adequately resist lateral forces and the entire structure above can collapse or "pancake" down onto it. This failure mode was dramatically documented in the 1989 Loma Prieta earthquake and the 1994 Northridge earthquake in Los Angeles. San Francisco learned from both events that thousands of its residential buildings remain at serious seismic risk.
| Building Characteristic | Soft Story Risk? | Notes |
|---|---|---|
| Wood-frame, pre-1978 construction | High Risk | Primary target of MSSR program |
| Ground-floor garage opening spanning building width | High Risk | Classic SF tuck-under parking configuration |
| Ground-floor commercial storefront with large windows | High Risk | Mixed-use buildings commonly affected |
| Pre-1978 wood-frame with solid perimeter walls on all sides | Lower Risk | May still be covered — verify with DBI |
| Post-1978 construction | Lower Risk | Built to modern seismic codes; not covered by MSSR |
| Concrete or steel frame construction | Different Risk Profile | Separate soft story risk; not covered by wood-frame MSSR program |
The SF Department of Building Inspection maintains a public database of buildings subject to the Mandatory Soft Story Retrofit Program. Visit sfdbi.org and search by address to confirm your building's program status, tier, and compliance record. If your building is listed and you have not started the process, act immediately — most early tier deadlines have already passed.
Mandatory Program Overview
San Francisco's Mandatory Soft Story Retrofit Program (MSSR) was established by Ordinance 66-13, signed in April 2013. It is one of the most comprehensive mandatory seismic retrofit programs in the United States, targeting approximately 4,900 wood-frame buildings with a soft or open ground floor built before 1978.
The program is administered by the SF Department of Building Inspection (DBI). Covered buildings received a formal notice from DBI. Owners are required to: screen their building to determine if a retrofit is required, submit screening plans, obtain a building permit by the tier deadline, complete construction, and obtain a final sign-off.
The retrofit itself does not require restoring the building to full current code. SF adopted a prescriptive standard (SF Guidelines for Seismic Evaluation and Retrofit of Existing Wood-Frame Soft Story Buildings) that provides a cost-effective path to significantly improved performance — adequate to reduce collapse risk substantially without requiring a full re-engineering of the building.
San Francisco has been enforcing this program. Buildings that missed permit deadlines have received notices of violation. Some properties have been posted. In addition to DBI enforcement, non-compliant buildings face disclosure obligations that can complicate sales and refinances. If your building is covered and you have not begun the process, contact DBI and a structural engineer immediately. Verify current enforcement procedures at sfdbi.org.
Tier Deadlines by Building Size and Use
The program divides covered buildings into five tiers based on the number of residential units and whether the ground floor has commercial use. Earlier tiers (larger buildings and commercial-ground-floor buildings) had earlier deadlines on the assumption that they pose greater life-safety risk. Verify your specific tier deadlines at sfdbi.org — deadlines have been extended multiple times due to COVID-19 and other factors.
The SF DBI has extended MSSR deadlines multiple times, including adjustments related to the COVID-19 pandemic. Do not rely on this article for current deadline dates. The definitive source is the SF Department of Building Inspection at sfdbi.org. Search your property address and check the current status directly.
Buying or Selling an SF Multifamily?
Soft story compliance status directly affects value, lender approval, and disclosure obligations. I check MSSR status on every SF multifamily transaction. Call or text me before making an offer or listing.
Retrofit Cost Estimates
Soft story retrofit costs vary significantly based on building size, foundation type, soil conditions, access challenges, and structural complexity. The figures below are general ranges based on SF market experience — always get multiple bids from licensed structural engineers and contractors before budgeting. Verify current cost programs with the City at sfdbi.org.
These ranges include structural engineering fees, permit fees, and construction. Costs increase materially if there are foundation issues, hillside conditions, cripple walls requiring extensive repair, or if permits have lapsed and must be re-obtained. The SF DBI provides cost guidance and a list of MSSR-experienced contractors — see sfdbi.org.
| Cost Component | Typical Range | Notes |
|---|---|---|
| Structural engineering fees | $8,000 – $25,000 | Includes assessment, plans, construction administration, and final inspection sign-off |
| Building permit fees | $2,000 – $8,000 | SF DBI permit fees based on project valuation; varies |
| Construction (shear walls, holdowns, foundation) | $30,000 – $300,000+ | Largest cost variable; driven by building size and scope |
| Tenant relocation during construction | $0 – $15,000+ | Usually not required for retrofit; depends on access needs. Verify tenant obligations with landlord attorney. |
Financing Options for SF Soft Story Retrofits
Several financing programs have been available to help SF property owners fund mandatory retrofits. Program availability and terms change — verify current offerings with the SF Mayor's Office of Housing and Community Development and the SF DBI at sfdbi.org.
| Financing Option | Key Features | Best For |
|---|---|---|
| SF Seismic Safety Loan Program (SSLP) | Low-interest loans administered through the City; verify availability at sfdbi.org | Owner-occupants and small landlords seeking below-market financing |
| PACE financing (Property Assessed Clean Energy) | Financing repaid through property tax bill; seismic retrofits often eligible | Owners preferring no upfront cost; note: PACE liens are senior to mortgages in many cases — consult lender first |
| Conventional construction loan / HELOC | Bank financing; terms vary; requires adequate equity | Owners with significant equity who can qualify for bank financing |
| Cash reserve / capital reserve | No interest cost; requires capital planning ahead of deadline | Owners with reserves who planned ahead; eliminates financing risk |
PACE financing for seismic retrofits may be available, but PACE liens in California are typically senior to existing mortgages. This can complicate refinancing and sales. Many lenders will not fund a purchase or refinance on a property with an active PACE lien without payoff. If you are considering PACE financing, discuss the implications with your lender and a real estate attorney before committing. Verify current PACE rules with your lender and the California PACE lender.
Tenant Rights and the SF Rent Board
Soft story retrofits are considered capital improvements under SF Rent Ordinance rules. Landlords may petition the SF Rent Board for an above-guideline rent increase to pass through a portion of retrofit costs to tenants. However, this is not automatic — it requires a formal petition, hearing, and Rent Board decision. Tenant advocates often appear at hearings to challenge the petition or the cost allocation.
| Issue | Rule / Approach | Verify With |
|---|---|---|
| Can I pass retrofit cost to tenants? | Potentially via Rent Board capital improvement petition; not guaranteed | SF Rent Board at sfrb.org; landlord attorney |
| Maximum passthrough amount | Rent Board sets limits; typically amortized monthly over years — not a lump sum | SF Rent Board at sfrb.org |
| Tenant displacement during retrofit | SF Rent Ordinance governs relocation if tenants must temporarily vacate; consult counsel | Landlord attorney; SF DBI at sfdbi.org |
| Right of re-entry after construction | Tenants have right to return if temporarily displaced for permitted work | Landlord attorney; SF Rent Board at sfrb.org |
I always recommend that SF landlords consult a landlord attorney experienced with the Rent Board before taking any action that affects tenant occupancy or rent during a retrofit project. The consequences of missteps — wrongful eviction claims, Rent Board penalties — can exceed the retrofit cost itself.
Impact on Sale and Financing
Soft story compliance status has become a standard due-diligence item in San Francisco multifamily transactions. Here is how it affects buyers, sellers, and lenders.
| Scenario | Impact | Recommended Action |
|---|---|---|
| Retrofit complete, final sign-off obtained | Positive — Buyers and lenders see no outstanding liability; may command slight value premium | Document completion; have sign-off paperwork ready for buyer's due diligence |
| Permit pulled, construction in progress | Neutral — Some buyers comfortable; lenders may condition on completion before funding | Disclose permit status; provide construction timeline to buyer and lender |
| Notice of violation outstanding | High Impact — Many lenders will not fund; some buyers will walk; title issues possible | Consult landlord attorney and expedite compliance before listing; price to reflect outstanding obligation |
| Building covered but no permit pulled | Significant Risk — Must be disclosed; impacts buyer's risk assessment and lender approval | Disclose immediately; begin compliance process; price accordingly or provide credit |
California law requires disclosure of known material facts affecting property value. An outstanding MSSR obligation — particularly a notice of violation — is a material fact that must be disclosed to buyers. Failure to disclose can expose sellers to liability after close. Consult your agent and a real estate attorney about disclosure requirements before listing any SF property subject to the MSSR program.
SF Multifamily Transaction Questions?
Whether you are buying, selling, or holding, soft story compliance is part of every SF due-diligence conversation I have with clients. Text or call me to talk through your situation.
5-Step MSSR Compliance Process
| Step | Action | Key Contact |
|---|---|---|
| 1 | Confirm your building is on the MSSR list and identify your tier | SF DBI at sfdbi.org |
| 2 | Hire a California-licensed structural engineer with MSSR experience to assess the building and prepare plans | SF DBI maintains a list of MSSR-experienced engineers at sfdbi.org |
| 3 | Submit plans to SF DBI for a building permit; pay permit fees; receive permit | SF DBI Building Permit division — sfdbi.org |
| 4 | Hire a licensed contractor; complete construction per approved plans; pass all required inspections | Contractor of your choice; SF DBI for inspections |
| 5 | Obtain final sign-off from SF DBI; retain documentation for sale disclosure and financing purposes | SF DBI — sfdbi.org |
SF Soft Story Quick-Reference Cheatsheet
Frequently Asked Questions
Related Bay Area Resources
Questions About an SF Property?
I work with SF multifamily owners through compliance issues, sales, and acquisitions. Call or text me directly for guidance specific to your property.
