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3328-3330 21St St

Eureka Valley/Dolores Heights, SF 94110 3608013 2 units · 3 fl · 1978

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 3328-3330 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 1978
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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 built1978
Total area3,809 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3608013
Ownership

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

Owner name
Yparraguirre Charlie A & Lu
Mailing address
3330 21st St San Francisco CA 94110
Last sale
050500

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.

3328 21st St, San Francisco, CA 94110
3330 21st St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story multi-family residential building at 3328-3330 21st Street, located in the Eureka Valley/Dolores Heights neighborhood, was constructed in 1978 and contains two units. The property has undergone several significant modifications over its lifetime, including three documented horizontal additions in 1989, 1992 (both of which have expired permits), and 1995 (expired permit), as well as an electrical upgrade in 2004 that converted overhead power to underground service with a 200-amp service installation. In recent years, there have been recurring issues with vehicle parking in the vicinity of the property, particularly during 2024, with multiple reports of vehicles parking on the sidewalk or blocking driveways, though in most cases officers were unable to locate the vehicles. A noteworthy infrastructure issue was reported in October 2021 regarding a collapsed sidewalk that required referral to the Planning Department due to concerns about an apparently overextended driveway. Additionally, there were two abandoned vehicle reports in 2017, both of which were resolved when the vehicles were gone upon officer arrival.

The property underwent significant improvements in 2018 with the construction of a 6-foot high metal fence at the front of the property, which was approved through the Liberty Hill Historic District planning process. The building's maintenance history includes regular upkeep such as reroofing work from 1995 and various electrical system upgrades. The area has experienced periodic street and sidewalk maintenance needs, as evidenced by a general cleaning request in February 2021 and the aforementioned sidewalk defect report in October 2021. While the building's major systems appear to have received necessary updates over time, the recurring parking violations and occasional infrastructure issues suggest some challenges in the immediate vicinity, though most of these have been promptly addressed through appropriate channels.

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

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Risk rating

How 3328-3330 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
50th percentile

Out of 1278 buildings in this neighborhood, 639 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
74%
No DBI
violation
26%
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.

Building size

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

Neighborhood (ZIP code)

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

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 45.0%
Moderate concern 13.9%
Severe concern 41.1%
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

3328-3330 21St St event timeline

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

2026
311 Request May 13
Blocking driveway cite only
Parking Enforcement
Building PermitMar 04
Revision to 202506259416. interior remodel of 3rd floor with added electrical scope per revised plans. work includes installation of new lighting fixtures and upgrade to electrical service panel.

See all 10 events

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

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Every record we have

Full data for 3328-3330 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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