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937-941 Hayes St

Alamo Square, SF 94117 0822034 3 units · 3 fl · 1900

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Alamo Square
At or below average
avg 2.3
1
FewerMore

This building has 1 novs (7y), at or below the Alamo Square average of 2.3.

Rent & eviction protection

Is 937-941 Hayes St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1900
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM1
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors3
Year built1900
Total area5,250 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0822034
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Sst Investments Llc
Mailing address
1256 Howard St San Francisco CA 94103
Last sale
100305

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

939 Hayes St, San Francisco, CA 94117
937 Hayes St, San Francisco, CA 94117
941 Hayes St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The three-unit residential building at 937-941 Hayes Street in Alamo Square, owned by SST Investments LLC, is a three-story flats and duplex structure built in 1900. The building has undergone several significant renovations and faced multiple maintenance challenges over its history. Most notably, there was a serious fire incident in 1995 requiring extensive repairs, including roof and kitchen restoration. Recent concerns from 2022-2024 indicate ongoing issues with sewage and water infrastructure, including repeated sewage leaks, sewer vent discharges, and water leaks, with the most recent complaints about leaks and sewage problems continuing into late 2024. The property underwent substantial electrical system upgrades in 2006, including new wiring and service installations for all three units. Historical records show various improvements, such as kitchen and bathroom remodeling in 2005 ($40,000), stair replacements in 2003, plumbing work including a sewer replacement in 2012, and multiple routine safety inspections revealing various code compliance issues.

The building has experienced several code compliance issues over the years, with violations recorded in 2003 and 2009 related to fire safety, building structure, and maintenance requirements including fire extinguisher maintenance, stair repairs, and handrail installations. A concerning pattern of maintenance issues emerges from recent records, with multiple 311 calls in 2024 related to sewage problems, water leaks, and infrastructure concerns. There have also been complaints about insufficient heat and deteriorating flooring in 2014, and routine safety inspections have periodically identified various code compliance issues. While many historical violations have been resolved, the building continues to experience recurring infrastructure problems, particularly in relation to its sewage system and water management. The property has undergone regular maintenance and improvements over the years, including repairs to stairs and landings, fire damage restoration, and various plumbing and electrical upgrades, indicating ongoing investment in maintaining the building's systems and infrastructure.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 937-941 Hayes St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
55th percentile

Out of 305 buildings in this neighborhood, 137 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
67%
No DBI
violation
33%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 54.3%
Moderate concern 36.6%
Severe concern 9.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

937-941 Hayes St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2025
Tenant Buyout Oct 01
Tenant buyout · $10,000
1 tenant(s)
Plumbing PermitJun 19
Work category: 2pb; this permit is in reference with the complaint number: 202538108. sewer line replacement via trench-less pipe bursting.

See all 7 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 937-941 Hayes St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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