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634-640 Lombard St

North Beach, SF 94133 0064011 8 units · 3 fl · 1907

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in North Beach
At or below average
avg 2.1
0
FewerMore

This building has 0 novs (7y), at or below the North Beach average of 2.1.

Rent & eviction protection

Is 634-640 Lombard 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 1907
2 or more units
8 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
Units8
Floors3
Year built1907
Total area7,588 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0064011
Ownership

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

Owner name
Choi Kam Yau Trust
Mailing address
Kam Yau Choi 640 Lombard St San Francisco CA 94133
Last sale
000000

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.

634 Lombard St, San Francisco, CA 94133
640 A Lombard St, San Francisco, CA 94133
638 Lombard St, San Francisco, CA 94133
636 Lombard St, San Francisco, CA 94133
640 Lombard St, San Francisco, CA 94133
Augrented Insights
AI summary

The 8-unit, 3-story multi-family residential building at 634-640 Lombard Street in North Beach, owned by the Choi Kam Yau Trust, was constructed in 1907 and has undergone several significant safety, maintenance, and infrastructure improvements over the past two decades. Most notably, in 2023, the building received substantial fire safety upgrades including a new fire alarm control panel, wireless communicator, LED annunciator, smoke detectors, manual pull stations, and low-frequency sounders, with a total investment of approximately $41,293. Prior to this, the building completed a mandatory soft-story retrofit in 2016 (Tier 4) to improve seismic resilience, and in 2019, underwent sewer line improvements to correct grade issues. Other important maintenance work included the rebuilding of a rear stairway and walkway repairs in 2004 ($7,000).

The building's maintenance record shows regular attention to safety and compliance issues, with the most significant violation occurring in 2014 related to lead paint hazards on the west wall, which was promptly resolved within three weeks. Three routine housing inspections conducted between 2001 and 2006 did not result in any documented violations. The property has experienced one documented fire-related incident involving a smoke detector activation (without fire) with no civilian injuries. Recent 311 calls from 2022 to 2024 primarily relate to external issues such as street cleaning, tree maintenance, and park services, rather than building-specific concerns. A single parking enforcement call regarding a blocking vehicle was recorded in October 2023, though the responding officer was unable to locate the vehicle.

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Risk rating

How 634-640 Lombard 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
19th percentile

Out of 362 buildings in this neighborhood, 293 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
45%
No DBI
violation
55%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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 29.4%
Moderate concern 31.8%
Severe concern 38.8%
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

634-640 Lombard St event timeline

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

2023
311 Request Oct 21
Blocking driveway cite tow
Black - Lexus ES300H - 9AWD709
Electrical PermitMay 16
Upgrade fire alarm system to comply with sffc sec 1103.7.6.1. install new fire alarm control panel. new wireless communicator, new led annunciator, install 5 smoke det. 8 man pull, 1 monitor module, 26 low freq sounders.

See all 6 events

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

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Every record we have

Full data for 634-640 Lombard 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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