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2747 Polk St

Russian Hill, SF 94109 0499001B 7 units · 3 fl · 1924

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Russian Hill — not a forecast
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

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 2747 Polk 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 1924
2 or more units
7 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.

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 1924
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
Units7
Floors3
Year built1924
Total area7,584 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0499001B
Ownership

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

Owner name
Mailing address
Fosse Robert L & Mazzaferri 97 Dominican Dr San Rafael CA 94901
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 7-unit, 3-story apartment building at 2747 Polk Street in Russian Hill, owned by Fosse Lvg Tr, was constructed in 1924 and has undergone several significant safety and infrastructure upgrades in recent years. Most notably, the building completed mandatory soft-story retrofit work in 2017 (Tier 3) at a cost of $150,000, followed by a revision in 2019 to replace plywood shear walls with hardy panels. In 2022, the fire alarm system was upgraded to comply with San Francisco fire codes, including the installation of low-frequency sounders, and an annual backflow device replacement was completed in December 2022. The building has maintained its basic systems with a steam boiler replacement in 2016, and regular unit updates including a comprehensive kitchen and bathroom remodel in Unit A in 2015.

The property has experienced several routine inspections and minor violations throughout its history, primarily relating to fire safety systems, including multiple alarm system complaints that were promptly corrected between 2009 and 2017. In 2016, there was a boiler permit renewal issue that was resolved within three months. While the building and its systems have generally been well-maintained, the surrounding area has experienced periodic issues such as sidewalk cleanliness concerns, documented through multiple 311 calls between 2019 and 2024, though these were primarily external to the building itself. The most recent maintenance issues have been primarily related to exterior conditions, including a graffiti incident reported in May 2024 and various cleaning matters that have been consistently resolved by city services.

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

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Risk rating

How 2747 Polk 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
23rdpercentile

Out of 1133 buildings in this neighborhood, 872 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
48%
No DBI
violation
52%
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
Moderate failure risk 52%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

2747 Polk St apartment reviews

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The story over time

2747 Polk St event timeline

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

2025
DBI Complaint Jul 28
Date last observed: 26-jul-25; exact location: main bldg; building type: residence/dwelling ; additional information: address identification 2747 does not fully contrast with it¿s background ;
Building Inspection Division
311 RequestMar 26
311 service request

See all 6 events

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

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Every record we have

Full data for 2747 Polk St apartments

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

Side by side

How 2747 Polk St compares to the neighborhood

This building against comparable properties in Russian Hill. Toggle filters to narrow the peer group.

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

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