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4238-4240 21St St

Eureka Valley/Dolores Heights, SF 94114 2749024A 2 units · 2 fl · 1955

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 4238-4240 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 1955
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 built1955
Total area3,585 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2749024A
Ownership

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

Owner name
Filmus Ilya & Ilona
Mailing address
Filmus Joseph & Iraida 4238 21St St San Francisco CA 94114
Last sale
090203

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.

4238 21st St, San Francisco, CA 94114
4240 21st St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit residential building at 4238-4240 21st Street, owned by Ilya and Ilona Filmus, is a two-story flats and duplex structure built in 1955 in the Eureka Valley/Dolores Heights neighborhood. The property has undergone numerous improvements over the years, with the most recent significant work being a kitchen and dining room renovation approved in May 2023, including a new window installation. The building has received consistent maintenance and upgrades, including a complete reroofing in 2020, deck structural repairs in 2018, and comprehensive window replacements between 2011-2014 that included six windows at the front and ten windows and a patio door, all compliant with modern efficiency standards. The fireplace was upgraded from wood burning to gas in 2015, with the necessary gas line installations properly permitted.

Recent activity in the vicinity of the building has primarily involved street-related issues, with multiple complaints about driveway blocking and parking violations between 2023-2025, though these are external to the building's operations. Two tree maintenance requests were submitted in 2024, one for overgrown trees blocking the sidewalk and another for general pruning. The building has maintained good compliance with permits and regulations, with all major renovation work properly permitted and completed, including electrical upgrades and plumbing modifications where necessary. The property has also addressed various neighborhood maintenance issues as they arise, including responses to illegal postings and street cleaning requirements, with all such cases showing proper resolution through city services.

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

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Risk rating

How 4238-4240 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
98th percentile

Out of 1278 buildings in this neighborhood, 26 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
94%
No DBI
violation
6%
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.

Neighborhood location

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 90.0%
Moderate concern 7.8%
Severe concern 2.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

4238-4240 21St St event timeline

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

2026
311 Request Jun 06
Parking on sidewalk
Parking Enforcement
311 RequestMay 26
Parking on sidewalk

See all 8 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4238-4240 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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