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3442-3446 21St St

Eureka Valley/Dolores Heights, SF 94110 3607019 2 units · 2 fl · 1928

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 Eureka Valley/Dolores Heights
At or below average
avg 1.3
0
FewerMore

This building has 0 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 3442-3446 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 1928
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 built1928
Total area3,970 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3607019
Ownership

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

Owner name
Bruck Jonathan & Loriot De
Mailing address
3521 21st St San Francisco CA 94114
Last sale
042821

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.

3446 21st St, San Francisco, CA 94110
3442 21st St, San Francisco, CA 94110
3444 21st St, San Francisco, CA 94110
Augrented Insights
Initial analysis

Located in the Eureka Valley/Dolores Heights neighborhood, this 1928 two-unit multi-family residential building at 3442-3446 21st Street has undergone significant improvements in recent years, with particular attention to safety systems and modernization. Most notably, in 2023-2024, comprehensive sprinkler system upgrades were completed, including the installation of a new waterflow supervisory system with modern monitoring capabilities and control panel. The building has also received substantial electrical and plumbing upgrades, with recent permits showing complete rewiring of both units (including LED lighting, dedicated circuits, and new services), as well as plumbing improvements including bathroom, kitchen, and laundry renovations along with the installation of a multi-zone heat pump system.

The property has seen extensive renovations between 2019 and 2024, including the legalization of additional living space, new roof deck installation, and modernization of systems including solar PV installation in 2020. Two complaints were filed in 2020 regarding construction impacts on neighboring properties and work status, though both cases were marked as not active. A noteworthy historical context involves an attempt to legalize a third unit in the early 2020s, which was ultimately disapproved by the Planning Department. More recently, there have been multiple reports of parking enforcement issues related to driveway blocking, with several citations issued between February and September 2024. The building's current systems and infrastructure appear to be well-maintained and regularly updated, with no recorded fire incidents beyond a false alarm in 2020.

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

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Risk rating

How 3442-3446 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
52th percentile

Out of 1278 buildings in this neighborhood, 613 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
75%
No DBI
violation
25%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building size

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

12-Month severity forecast
No violation 69.4%
Moderate concern 20.3%
Severe concern 10.3%
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

3442-3446 21St St event timeline

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

2025
311 Request Mar 23
Encampment
Encampment

See all 20 events

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

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Every record we have

Full data for 3442-3446 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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