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320-324 Guerrero St

Mission Dolores, SF 94103 3556005 6 units · 3 fl · 1906

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Mission Dolores
Above average
avg 2.9
3
FewerMore

This building has 3 novs (7y), above the Mission Dolores average of 2.9.

Rent & eviction protection

Is 320-324 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 1906
2 or more units
6 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.

Building characteristics
Units6
Floors3
Year built1906
Total area4,122 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3556005
Ownership

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

Owner name
320-324 Guerrero St Llc
Mailing address
Michael Castleman 568 Alvarado St San Francisco CA 94114
Last sale
070804

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.

322 Guerrero St, San Francisco, CA 94103
324 Guerrero St, San Francisco, CA 94103
320 Guerrero St, San Francisco, CA 94103
Augrented Insights
AI summary

Located in the Mission Dolores neighborhood, 320-324 Guerrero Street is a 6-unit, 3-story multi-family residential building constructed in 1906. The building has experienced several significant structural issues over its history, with the most recent major concern being reported in June 2024, when complaints of water intrusion, hazardous outlet wiring, plumbing leaks, and mold were documented in Unit 320. This unit reportedly had floor-to-ceiling black mold that had been previously painted over, though this complaint was marked as not active by July 2024. Earlier in the building's history, there were notable structural improvements made in 2004, including the installation of new lateral foundations and replacement of a 20-foot rear foundation wall. Multiple complaints in 2003 revealed several safety concerns, including egress obstructions, combustible storage issues, and electrical problems, all of which were abated by October 2003. The building has undergone various renovations and repairs over the years, including kitchen renovations in the late 1980s/early 1990s and multiple concrete and foundation repairs in the 2000s.

Recent maintenance records show regular attention to street-level issues, with multiple 311 calls between 2014 and 2024 primarily related to general cleaning, hazardous materials, and parking concerns. The building's fire safety record appears to be uneventful, with no incidents reported upon fire department arrival at the address. While many historical permits and repairs show good maintenance practices, the most recent mold and water damage issues in 2024 suggest ongoing challenges with building maintenance and resident safety.

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Risk rating

How 320-324 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
41th percentile

Out of 799 buildings in this neighborhood, 471 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

Neighborhood (ZIP code)

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

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 35.7%
Moderate concern 19.0%
Severe concern 45.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

320-324 Guerrero St event timeline

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

2026
Building Permit May 26
Reroofing no hot works
$27,200 · Issued

See all 5 events

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

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Every record we have

Full data for 320-324 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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