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817-819 35Th Ave

Outer Richmond, SF 94121 1678004 2 units · 2 fl · 1923

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 817-819 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 1923
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
Floors2
Year built1923
Total area3,189 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1678004
Ownership

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

Owner name
Wong Agnes Chiu Mei
Mailing address
909 Brookgrove Lane Cupertino CA 95014
Last sale
082995

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.

819 35th Ave, San Francisco, CA 94121
817 35th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The 817-819 35th Avenue property, a two-unit residential building located in the Outer Richmond neighborhood, is a two-story flats and duplex structure built in 1923 and currently owned by Agnes Chiu Mei Wong. The building has undergone several significant renovations over its lifetime, with the most recent and major work occurring in August 2023 when $220,000 worth of improvements were made, including the installation of fiber cement lap siding (not visible from the street), replacement of 33 windows (24 on the right and backside; 9 on the front), and stucco replacement on the front facade. This work follows a historical pattern of maintenance and upgrades, including a complete vertical extension/addition of one story in 1986, kitchen improvements in 1999, and various repairs related to weather protection and dry rot in the early 1990s. A concerning event was reported in December 2023 when a complaint was filed regarding potential fire hazards related to vinyl windows, though this case is currently listed as not active.

The property has experienced several maintenance and safety issues in recent years, particularly regarding the exterior. Notable issues include a collapsed sidewalk reported in 2022 (though this was subsequently not found), and one instance of sewage backup discharge in November 2024, which was investigated and resolved without observed problems. The building's location has seen recurring parking-related issues, with multiple reports of blocked driveways, sidewalk parking, and improper postings between 2021-2025, though most of these incidents were not able to be verified by responding officers. The property's maintenance history reflects regular upkeep, with the 2023 upgrades representing the most substantial recent investment in the building's infrastructure and appearance.

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

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Risk rating

How 817-819 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
95th percentile

Out of 1040 buildings in this neighborhood, 52 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
93%
No DBI
violation
7%
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.

DBI complaint rate, owner's portfolio

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 85.9%
Moderate concern 11.4%
Severe concern 2.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

817-819 35Th Ave apartment reviews

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The story over time

817-819 35Th Ave event timeline

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

2026
DBI Complaint May 05
Date last observed: 03-may-26; exact location: main bldg; building type: residence/dwelling abandoned/derelict structure; damaged walls; expired permits; work w/o permit; ; additional information: scaffolding has been in place for more than 2 years and there has been no construction for two years. ;
Building Inspection Division
DBI ComplaintMay 04
Date last observed: 03-may-26; exact location: main bldg; building type: residence/dwelling abandoned/derelict structure; damaged walls; expired permits; work w/o permit; ; additional information: scaffolding has been in place for more than 2 years and there has been no construction for two years. ;

See all 4 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 817-819 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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