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538-540 Guerrero St

Mission Dolores, SF 94110 3578007 2 units · 2 fl · 1923

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
At or below average
avg 2.9
0
FewerMore

This building has 0 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 538-540 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 1923
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units2
Floors2
Year built1923
Total area2,700 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3578007
Ownership

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

Owner name
Johnny Wong & Anne Marie Lu
Mailing address
Chooey Johnny Wong & Anne M 78 Alviso St San Francisco CA 94127
Last sale
032095

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.

538 Guerrero St, San Francisco, CA 94110
540 Guerrero St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The two-unit, two-story multi-family residential building at 538 Guerrero Street, owned by Johnny Wong & Anne Marie Lu, has undergone significant recent renovation activity, particularly in 2023. The most notable events include a major renovation that generated some community concerns in June 2023 regarding unpermitted work and health/safety issues, followed by a legitimate permitted kitchen and bathroom remodel in June 2023 (costing $83,033) which included several fixture replacements. This renovation period was accompanied by electrical upgrades, including a complete rewiring of one unit with new subpanel installation and service upgrade to 200 amps (completed September 2023), as well as plumbing updates affecting bathroom, kitchen, and laundry areas (completed July 2023). A 200-amp meter main installation permit was issued in February 2024.

The building's maintenance history shows attention to essential systems over the years, including reroofing work completed in 2019 ($17,500) and earlier improvements such as mineral siding installation (1993), anchor bolt installation (1991), and kitchen remodeling (1985). Recent 311 calls indicate some ongoing neighborhood issues, though these appear unrelated to the building's condition, including recurring matters with illegal parking and street cleaning needs throughout 2020-2024, and one instance of tree maintenance required as of October 2024.

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

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Risk rating

How 538-540 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
83th percentile

Out of 799 buildings in this neighborhood, 136 are predicted to be safer.

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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

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.

12-Month severity forecast
No violation 78.9%
Moderate concern 15.3%
Severe concern 5.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

538-540 Guerrero St event timeline

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

2026
311 Request Jan 28
Garbage and debris
human waste or urine

See all 7 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 538-540 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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