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870-872 Bay St

Russian Hill, SF 94109 0026017 2 units · 2 fl · 1938

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. 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 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.

Rent & eviction protection

Is 870-872 Bay 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 1938
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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 1938
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
Units2
Floors2
Year built1938
Total area4,543 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0026017
Ownership

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

Owner name
Mailing address
Geraldi Gus J & Mary Jane T 1831 Indian Valley Rd Novato CA 94947
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.

870 Bay St, San Francisco, CA 94109
872 Bay St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The two-story multi-family residential building at 870-872 Bay Street in Russian Hill, owned by the Geraldi Family Trust, was constructed in 1938 and contains two units. The building's maintenance history shows several significant roofing and structural work, including multiple roofing projects in 1990 and 2008 (the latter resulting in a violation for work without proper permits that was finally abated in 2010), as well as a kitchen remodel completed in 1990 and window replacements in 1993. Recent building maintenance issues have included an ongoing situation with graffiti on the sidewalk in front of the property (as of October 2024) and a tree maintenance issue regarding overgrown trees blocking signs (reported January 2025).

The property has experienced multiple waste management challenges in recent months, with several reports of overflowing city garbage cans and debris on the street or sidewalk throughout 2024, though these issues have generally been resolved. There have also been some infrastructure concerns in the vicinity, including a damaged traffic signal that was repaired in late 2024. While the building itself has no active violations as of the most recent reports, the surrounding area has been experiencing various maintenance and infrastructure issues that affect the immediate environment, including pavement defects and autonomous vehicle service requests. The most recent building improvement on record remains the roofing work from 2008, though this permit is now expired.

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

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Risk rating

How 870-872 Bay 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
96thpercentile

Out of 1133 buildings in this neighborhood, 45 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
94%
No DBI
violation
6%
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.

Neighborhood (ZIP code)

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month risk forecast
Low failure risk 6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

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On the map

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8 found
The story over time

870-872 Bay St event timeline

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

2026
311 Request May 09
Not offensive
signal box
311 RequestMay 09
Not offensive

See all 3 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 870-872 Bay St apartments

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

Side by side

How 870-872 Bay St compares to the neighborhood

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