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2375-2377 21St Ave

Parkside, SF 94116 2350015 2 units · 3 fl · 1939

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 Parkside
Above average
avg 0.8
3
FewerMore

This building has 3 novs (7y), above the Parkside average of 0.8.

Rent & eviction protection

Is 2375-2377 21St 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 1939
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1939
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors3
Year built1939
Total area3,996 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2350015
Ownership

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

Owner name
Mailing address
Kathryn Gordon 1228 Treat Ave San Francisco CA 94110
Last sale
052418

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.

2375 21st Ave, San Francisco, CA 94116
2377 21st Ave, San Francisco, CA 94116
Augrented Insights
Initial analysis

The three-story multi-family residential building at 2375-2377 21st Avenue in the Parkside neighborhood, owned by 2375-77 21 SF LLC, is a two-unit structure built in 1939. The property has undergone significant renovations and improvements between 2016 and 2017, including comprehensive electrical upgrades with new panelboards, a complete rewire of the building, and the installation of new plumbing systems. Major remodeling work was performed on all three floors, with particular attention to the second and third floors involving wall removals, kitchen relocation, and bathroom additions ($120,000), and the ground floor ($71,000) adding new living spaces, a bedroom, bathroom, and sunken patio. Structural modifications were made to improve the building's support systems, including the removal of interior posts and extension of steel beams. The building's HVAC systems received substantial updates with the replacement of multiple heaters and the installation of new ductwork ($49,000), while bathroom and laundry facilities were modernized with new fixtures and systems.

The property has been generally well-maintained, with earlier improvements including roof work completed in 2012 and 1989. Recent 311 calls from 2022-2024 primarily relate to parking enforcement issues, with multiple reports of driveway blocking, though these are not directly related to building conditions. The most recent building-related permits were issued in 2017, with no significant maintenance or safety issues recorded in recent months. The major renovation period of 2016-2017 appears to have addressed many of the building's infrastructure needs, including electrical, plumbing, and structural systems, though it's notable that while these improvements suggest proactive maintenance, no major building permits have been recorded in the past six years.

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

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Risk rating

How 2375-2377 21St 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
34th percentile

Out of 255 buildings in this neighborhood, 168 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
63%
No DBI
violation
37%
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 location

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 51.4%
Moderate concern 26.1%
Severe concern 22.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

2375-2377 21St Ave apartment reviews

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The story over time

2375-2377 21St Ave event timeline

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

2026
Building Violation (NOV) Mar 25
Building violation
At the medicine cabinet in the bathroom, the unit (large size) has fallen off the wall. inspection reveals that the screws were not long en…
Building Violation (NOV)Mar 25
Building violation

See all 4 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2375-2377 21St 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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