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851 Guerrero St

Eureka Valley/Dolores Heights, SF 94110 3608029 14 units · 3 fl · 1925

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Eureka Valley/Dolores Heights
Above average
avg 1.3
29
FewerMore

This building has 29 novs (7y), above the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 851 Guerrero 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 1925
2 or more units
14 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
Units14
Floors3
Year built1925
Total area10,727 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3608029
Ownership

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

Owner name
Lapidos Jack M
Mailing address
Chandler Properties 3475 California St San Francisco CA 94118
Last sale
082296

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.

85 Liberty St, San Francisco, CA 94110
851 Guerrero St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The 14-unit, 3-story apartment building at 851 Guerrero Street, owned by Jack M. Lapidos, has undergone significant maintenance and repair work since its construction in 1925. Most recently, in 2024, repairs have included patching sheetrock ceilings and walls on the ground floor following plumbing and electrical work, as well as addressing kitchen and bathroom plumbing issues in Unit 4 that generated a Notice of Violation in 2021-2022. The building successfully completed its mandatory soft-story retrofit in 2017-2019, demonstrating compliance with seismic safety requirements. Significant plumbing upgrades include the replacement of clay sewer pipes with cast iron in 2023, relocation of rain down spots, and various heating system improvements including boiler replacements in 2022-2023.

The property has faced several maintenance challenges, particularly in 2022-2023, including water damage, electrical issues, and building code violations. Active violations remain regarding interior surfaces, weatherproofing, egress obstruction, and lead-based paint concerns, with a final warning letter issued in November 2024. Building complaints from 2020-2022 documented various tenant concerns, including heating system failures, unauthorized renovation work, and garage maintenance issues. Historical records show past fire safety violations related to exit obstructions, fire alarms, and combustible storage, though these were corrected by 2007. Recent improvements include a 2022 electrical upgrade from 70amp to 400amp with 5 meters, and roofing work completed in 2022. The property has maintained regular fire safety inspections, with corrections made to fire extinguisher and alarm system issues as needed.

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

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Risk rating

How 851 Guerrero 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
0th percentile

Out of 1278 buildings in this neighborhood, 1278 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
13%
No DBI
violation
87%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

Building size

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

12-Month severity forecast
No violation 9.0%
Moderate concern 52.0%
Severe concern 39.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

851 Guerrero St apartment reviews

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The story over time

851 Guerrero St event timeline

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

2026
311 Request Jan 18
Blocking driveway cite only
Parking Enforcement

See all 34 events

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

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Every record we have

Full data for 851 Guerrero St apartments

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

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