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671-673 London St

Excelsior, SF 94112 6345030 2 units · 2 fl · 1908

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 671-673 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 1908
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1908
Total area2,516 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6345030
Ownership

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

Owner name
Lichtwardt Benjamin & Yoke
Mailing address
671 London St San Francisco CA 94112
Last sale
040615

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.

673 London St, San Francisco, CA 94112
671 London St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The property at 671-673 London Street is a two-unit, two-story multi-family residential building constructed in 1908 in the Excelsior neighborhood, currently owned by Benjamin & Yoke Lichtwardt. The building has undergone several significant maintenance and improvement projects over the past decade, with the most recent being a $28,000 reroofing project completed in November 2023 and a sewer lateral replacement in August 2023. Other notable improvements include a kitchen remodel in 2018 ($12,000), bathroom renovations in 2018, and various electrical upgrades including new wiring for bedrooms and common areas in 2021, along with an electrical panel replacement. The building underwent structural repairs in 2016 to address termite-related issues identified in a 2014 report.

The property has experienced ongoing issues with parking enforcement in recent months, with numerous complaints about driveway blocking and illegal parking recorded between December 2024 and January 2025, though these are external to the building itself. A historic building complaint was filed in May 2018 regarding work done without a permit, but this case is currently listed as not active. In 2011, there was a fire complaint regarding combustible storage with a violation issued, though this appears to have been resolved on the same day. All recent building, plumbing, and electrical permits show completed status, indicating proper adherence to regulatory requirements for major works.

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

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Risk rating

How 671-673 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
94th percentile

Out of 337 buildings in this neighborhood, 20 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 71.3%
Moderate concern 14.6%
Severe concern 14.1%
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

671-673 London St event timeline

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

2023
Building Permit Nov 29
Reroofing
$28,000 · Complete
Plumbing PermitAug 21
Work category: 1p; sewer lateral replacement from building foundation to sidewalk house trap.

See all 4 events

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

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Every record we have

Full data for 671-673 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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