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27-37 Isis St

South of Market, SF 94103 3522044 9 units · 3 fl · 1906

Nothing on record for this building in the last seven years, but our model still flags a rising risk of maintenance problems in the next 12 months. That forecast comes from the owner's wider portfolio and the surrounding area, not from this building's own record — treat it as a reason to ask questions, not as evidence of a problem. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in South of Market — not a forecast
At or below average
avg 3.3
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 27-37 Isis 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 1906
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
SLR
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1906
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units9
Floors3
Year built1906
Total area5,436 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3522044
Ownership

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

Mailing address
Dolores Willett Po Box 591540 San Francisco CA 94159
Last sale

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

35 Isis St, San Francisco, CA 94103
33 Isis St, San Francisco, CA 94103
37 A Isis St, San Francisco, CA 94103
27 Isis St, San Francisco, CA 94103
31 Isis St, San Francisco, CA 94103
29 Isis St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The three-story, nine-unit multi-family residential building at 27-37 Isis Street, owned by the Willett Dolores Gst Trust, was constructed in 1906 and has undergone several significant maintenance and improvement projects over its lifetime. The most recent comprehensive renovation occurred in 2011, when both the kitchen and bathroom were remodeled, including the installation of new fixtures, cabinets, and countertops, with associated plumbing and electrical work totaling approximately $31,000. The building has experienced recurring issues with deck and stair maintenance, with repairs documented in 2009 (rear deck), 2008 (back stairs), 2005 (front stairs), 2000 (two flights of stairs), and 1986 (bringing the building up to code). These repairs suggest ongoing attention to structural safety elements, particularly regarding access points.

Recent activity around the property has primarily involved external maintenance and urban cleanliness issues, as evidenced by multiple 311 calls in late 2024 regarding garbage, debris, and graffiti on adjacent properties. A notable cluster of service requests in December 2024 involved reports of human waste or urine on streets/sidewalks near the property. The building's safety record shows several fire-related inspections and complaints between 2008 and 2022, including issues with alarm systems, blocked exits, and street numbering, though most were either corrected immediately or determined to have no merit. A 1990 reroofing project and various siding and decking repairs indicate regular upkeep of building systems, though the presence of multiple fire system violations in adjacent buildings suggests some historical compliance challenges in the immediate area. The most recent building permit activity from 2019 was related to street space, though the minimal associated cost suggests this was likely a minor administrative matter.

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

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Risk rating

How 27-37 Isis 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

Lower risk — safer than most nearby

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

Typical — about average for the neighborhood

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

Higher risk — riskier than most nearby

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

Neighborhood percentile
21stpercentile

Out of 430 buildings in this neighborhood, 340 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
30%
No DBI
violation
70%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month risk forecast
High failure risk 70%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

27-37 Isis St apartment reviews

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The story over time

27-37 Isis St event timeline

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

2025
Fire Incident Oct 13 Serious
740 Unintentional transmission of alarm, other
Injuries: 0 · Fatalities: 0

See all 8 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 27-37 Isis St apartments

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

Side by side

How 27-37 Isis St compares to the neighborhood

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

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