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455 London St

Excelsior, SF 94112 6085029 2 units · 2 fl · 1987

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 Excelsior
At or below average
avg 1.4
0
FewerMore

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

Rent & eviction protection

Is 455 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 1987
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors2
Year built1987
Total area2,458 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6085029
Ownership

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

Owner name
Chin Peter & Lai Susan
Mailing address
318 Tara St San Francisco CA 94112
Last sale
102302

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The property at 455 London Street is a two-unit, two-story multi-family residential building located in the Excelsior neighborhood, built in 1987 by owners Peter Chin and Susan Lai. The building was constructed following the demolition of a cottage on the site in early 1987, as evidenced by building permit number 8701964. Since its construction, the property has been characterized by consistent parking-related issues, with multiple citations issued between 2022 and 2024 for vehicles blocking driveways or parking on sidewalks, including three driveway blocking incidents (March 2024, July 2023, and September 2022) and four sidewalk parking violations (August 2022, June 2022, and two incidents in September 2022).

The property has also experienced some maintenance and service issues, including both trees (September 2023) and general cleaning matters, with two separate loose garbage incidents addressed by the Department of Public Works in September 2022. More recently, in October 2023, there was a Rent Board-related service request regarding fee housing inventory, which was resolved with the mailing of a Spanish paper exemption form. While the building's age and history show no major structural or safety concerns, the recurring parking violations in the vicinity, particularly in the past two years, suggest ongoing challenges with parking management in the immediate area.

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

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Risk rating

How 455 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

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
80th percentile

Out of 337 buildings in this neighborhood, 67 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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 location

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

Neighborhood (ZIP code)

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

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 84.0%
Moderate concern 10.4%
Severe concern 5.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

455 London St apartment reviews

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The story over time

455 London St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 455 London 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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