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771-773 24Th Ave

Central Richmond, SF 94121 1620005 2 units · 3 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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 771-773 24Th 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
Floors3
Year built1923
Total area4,037 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1620005
Ownership

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

Owner name
Tang Family Trust
Mailing address
Cheuk & Lillian Tang Truste 773 24Th Ave San Francisco CA 94121
Last sale
081414

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.

773 24th Ave, San Francisco, CA 94121
771 24th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The Tang Family Trust-owned duplex at 771-773 24th Avenue, located in San Francisco's Central Richmond neighborhood, is a three-story multi-family residential building constructed in 1923. The property has undergone several significant renovations, most notably a comprehensive modernization project completed in 2008-2009 that included complete rewiring of the building, remodeling of kitchens and bathrooms on the second and third floors, and the addition of a new bathroom on the ground floor, along with plumbing work for new gas lines and various electrical upgrades including installation of 12 smoke detectors and new 200-amp service. The most recent major maintenance work was a reroofing project completed in May 2024 at a cost of $22,800.

The building has experienced some maintenance and accessibility issues in recent months, with several 311 calls between 2023-2024 reporting problems including a blocked sidewalk (resolved), overgrown trees (open), and curb defects (open as of November 2023). There have been multiple reports of driveway blocking incidents in 2024, though these were generally not resolved through police intervention. The property has also required attention to public space compliance, with open cases regarding clear paths of travel in shared spaces and an unspecified general request to SFUSD that received no response. While these recent issues indicate some ongoing maintenance and accessibility challenges in the immediate vicinity of the property, the extensive renovation work completed in 2008-2009 demonstrates a significant investment in the building's infrastructure and systems.

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

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Risk rating

How 771-773 24Th 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
86th percentile

Out of 2250 buildings in this neighborhood, 315 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
90%
No DBI
violation
10%
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 complaints, owner's portfolio

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

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

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 83.6%
Moderate concern 12.1%
Severe concern 4.2%
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

771-773 24Th Ave event timeline

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

2025
311 Request Mar 14
Damaged tree
hanging limb

See all 3 events

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

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Every record we have

Full data for 771-773 24Th Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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