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1250-1252 Chestnut St

Russian Hill, SF 94109 0478009 3 units · 2 fl · 1923

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems 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.

Rent & eviction protection

Is 1250-1252 Chestnut 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 1923
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.

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 1923
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
Units3
Floors2
Year built1923
Total area3,772 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0478009
Ownership

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

Owner name
Mailing address
Langenhan Adrienne 225 Magellan Ave San Francisco CA 94116
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.

1252 Chestnut St, San Francisco, CA 94109
1252 A Chestnut St, San Francisco, CA 94109
1250 Chestnut St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The property at 1250-1252 Chestnut Street is a two-story, three-unit multi-family residential building constructed in 1923 in the Russian Hill neighborhood, currently owned by Michael Sangiacomo. The building has undergone several significant improvements over the years, most recently with a major renovation project filed in November 2024 worth approximately $450,000, which proposes substantial modifications including the addition of a new one-bedroom unit on the ground floor, merging and remodeling two existing one-bedroom units into a three-bedroom unit on the second floor, and renovating the third-floor unit with kitchen and bath upgrades. Historical improvements include reroofing projects in 2000 and 2015, and window replacements in 2001.

The building has experienced three routine housing inspections (1999, 2007, and 2015), with the most recent inspection in 2015 resulting in several fire safety violations including issues with fire extinguishers and smoke detectors, though all violations were resolved by March 2016. A notable event occurred in June 2024 when tenant buyouts were processed for 1252 Chestnut Street, totaling $138,524 for two tenants. The property has received various service requests in recent years, including a temporary moving sign request in January 2024 and a parking violation report in July 2018, though these incidents occurred outside the building's immediate residential context.

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

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Risk rating

How 1250-1252 Chestnut 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
69thpercentile

Out of 1133 buildings in this neighborhood, 351 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
82%
No DBI
violation
18%
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.

Neighborhood location

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month risk forecast
Low failure risk 18%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1250-1252 Chestnut St apartment reviews

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On the map

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The story over time

1250-1252 Chestnut St event timeline

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

2026
Electrical Permit Apr 13
Electrical wiring in adu.
Complete

See all 12 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1250-1252 Chestnut St apartments

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

Side by side

How 1250-1252 Chestnut 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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