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2659-2661 21St St

Inner Mission, SF 94110 4143039 4 units · 3 fl · 1907

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 Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 2659-2661 21St 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
4 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units4
Floors3
Year built1907
Total area3,848 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4143039
Ownership

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

Owner name
Tran Fmly Tr
Mailing address
Tran Calvin & Mimi Trustees 133 Alturas Dr Burlingame CA 94010
Last sale
042898

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.

2661 21st St, San Francisco, CA 94110
2659 21st St, San Francisco, CA 94110
Augrented Insights
Initial analysis

This three-story, multi-family residential building located at 2659-2661 21st Street in San Francisco's Inner Mission neighborhood was built in 1907 and contains 4 units. The property has undergone several significant improvements and modifications over the past three decades, with the most recent being a cluster of eight parking-related complaints between 2023-2024, indicating ongoing issues with parking access around the building. A notable proposed improvement in 2017 for the first floor included a substantial ADU (Accessory Dwelling Unit) renovation with multiple new rooms and a complete sprinkler system, though this permit was ultimately cancelled. Completed work includes a 2013 comprehensive remodel of the second floor's kitchen and bathrooms ($35,000), which included modern features such as high-efficiency lighting and occupancy sensors, along with corresponding plumbing and electrical upgrades. Historical improvements include the legalization of a ground floor storage room and toilet in 1992, a kitchen remodeling project in 1996, and the replacement of damaged rear stairs in 2002.

The building has maintained compliance with routine housing inspections, with records from 1999 and 2008 showing these inspections were conducted and resolved. Recent municipal service calls in 2023-2024 have primarily been related to parking enforcement and tree maintenance, with one open case from November 2023 regarding sidewalk tree root damage. A malfunctioning alarm system incident was also recorded but resulted in no civilian injuries. While the building's maintenance history shows regular upkeep and modernization efforts, the concentration of recent parking-related complaints suggests an ongoing challenge with driveway access for residents and emergency services.

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

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Risk rating

How 2659-2661 21St 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
42th percentile

Out of 2380 buildings in this neighborhood, 1380 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
60%
No DBI
violation
40%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 37.1%
Moderate concern 39.3%
Severe concern 23.6%
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

2659-2661 21St St event timeline

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

2026
311 Request Feb 15
Blocking driveway cite tow
Parking Enforcement

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2659-2661 21St 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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