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639-641 35Th Ave

Outer Richmond, SF 94121 1578004 2 units · 3 fl · 1900

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 Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 639-641 35Th Ave 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 1900
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.

Building characteristics
Units2
Floors3
Year built1900
Total area3,157 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1578004
Ownership

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

Owner name
Lam Revocable Trust
Mailing address
Lam Minh V & Karen C Ttees 1770 33Rd Ave San Francisco CA 94122
Last sale
010220

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.

639 35th Ave, San Francisco, CA 94121
641 35th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 639-641 35th Avenue is a three-story, two-unit multi-family residential building located in San Francisco's Outer Richmond neighborhood, built in 1900 and currently owned by Lam Revocable Trust. The building underwent significant renovations in 2015, including comprehensive kitchen and bathroom remodeling in both units, electrical rewiring, furnace replacements, and the addition of new interior features such as a bedroom and media room. However, this renovation period was marked by several concerning instances, including a building violation filed in June 2015 regarding unauthorized work beyond the scope of the permit, and multiple complaints in June 2016 alleging illegal unit conversion, mold issues, and unauthorized lockouts affecting disabled tenants.

Prior to the major 2015 renovations, the building had faced several maintenance challenges, including a complaint about heating and electrical issues in late 2014 and an unauthorized home remodel complaint in 2013. Additional historical records show that the building underwent reroofing in 2012 and had repair work done to the back stairs in 1984. More recently, between 2020 and 2025, there have been several parking-related enforcement actions around the property, as well as a hazardous materials incident involving glass on the street/sidewalk in May 2022. Two 311 calls in 2023 involved street defects and parking violations, indicating ongoing concerns with parking management in the area. The building also has planning records showing complaints about potential transient/tourist activity in its upper floors and concerns about ground floor bathroom modifications.

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

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Risk rating

How 639-641 35Th Ave'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
48th percentile

Out of 1040 buildings in this neighborhood, 541 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.

Building age

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 74.9%
Moderate concern 17.5%
Severe concern 7.6%
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

639-641 35Th Ave 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 639-641 35Th Ave 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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