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234 London St

Excelsior, SF 94112 6014010 2 units · 2 fl · 1906

A handful of records on file over the last seven years, and our model sees a moderate chance of more 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 Excelsior — not a forecast
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Excelsior average of 1.4.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 234 London 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
2 units
Property type
Multi-Family Residential
Zoning
RH2
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 1906
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 built1906
Total area1,850 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6014010
Ownership

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

Mailing address
502 Alameda De Las Pulgas Belmont CA 94002
Last sale
February 25, 2015

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.

234 A London St, San Francisco, CA 94112
234 London St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The two-unit residential building at 234 London Street, located in the Excelsior neighborhood, was built in 1906 and is currently owned by Linda Chan and Brian Wong. The property has a documented history of unauthorized modifications and permit violations, most notably in 2004 when multiple violations were filed regarding unpermitted construction of rooms, bathrooms, and a kitchen at the ground level, including the formation of an illegal dwelling unit. These violations were ultimately abated in November 2004. More recent concerns were raised in June 2022 about potential occupancy overages, with complaints of multiple families residing in the building, exposed wiring, and parking issues associated with the property's use.

The building has undergone several permitted improvements over the years, including window replacements in 2015, electrical upgrades in 2004, and a completed sidewalk space permit in 2010. In 2018, there was a hazardous materials complaint that was determined to have no merit by June 2019. The property has experienced ongoing parking-related issues, with numerous citations issued throughout late 2024 for vehicles blocking driveways and parking on sidewalks. These issues have been consistently documented through 311 calls and parking enforcement actions. Despite the building's age, recent permits have shown efforts to maintain and improve the property, including legal occupancy documentation submitted in 2015, though historical patterns of unpermitted modifications raise concerns about past compliance with building codes and regulations.

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

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Risk rating

How 234 London 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
16thpercentile

Out of 337 buildings in this neighborhood, 283 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
55%
No DBI
violation
45%
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.

Director's hearing rate, owner's portfolio

Per-building rate of director's hearings across the owner's portfolio.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month risk forecast
Moderate failure risk 45%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

234 London St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

234 London St event timeline

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

2025
311 Request Mar 07
Other excessive noise
Noise

See all 4 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 234 London St apartments

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

Side by side

How 234 London St compares to the neighborhood

This building against comparable properties in Excelsior. Toggle filters to narrow the peer group.

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