Free SF apartment background check

4334-4336 20Th St

Eureka Valley/Dolores Heights, SF 94114 2697018 2 units · 2 fl · 1900

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 4334-4336 20Th 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 1900
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
Floors2
Year built1900
Total area2,080 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2697018
Ownership

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

Owner name
Sweet/Taft-Kiewek Fmly Revo
Mailing address
Taft-kiewek Benilda & Sweet 4334 20Th St San Francisco CA 94114
Last sale
111708

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.

4334 20th St, San Francisco, CA 94114
4336 20th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit residential building at 4334-4336 20th Street in the Eureka Valley/Dolores Heights neighborhood has a documented history dating back to its construction in 1900. The property has undergone several significant renovations and maintenance work, with the most substantial being a proposed rear addition and roof modifications in 2005-2008, which included an exterior stairway, stair penthouse, and deck additions valued at $50,000. The building has faced recurring maintenance challenges, particularly with moisture-related issues, as evidenced by multiple dry rot repairs, including a 2005 garage repair and documented dry rot and termite issues in 1992. Plumbing infrastructure has been updated over the years, with the most recent work being a new waste line for the rain leader in 2012, following a violation notice regarding improper stormwater drainage.

The property history includes some concerning safety issues, notably a 1995 complaint about unventilated natural gas heating and lighting fixtures, though this was resolved within a week. A 2005 complaint about an unauthorized bed & breakfast operation was also quickly addressed. The building underwent various electrical upgrades in 2007, including installation of new lighting systems and circuits. More recently, the property has experienced typical urban property issues including tree maintenance needs, sewer odor concerns, and parking enforcement matters. The most significant recent structural work appears to be the 2012 plumbing correction for the roof drainage system, which was completed within three months of the violation notice. The property's records show regular maintenance and updating of systems, though patterns of moisture-related issues suggest ongoing challenges in this area.

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

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Risk rating

How 4334-4336 20Th 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
74th percentile

Out of 1278 buildings in this neighborhood, 332 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 78.4%
Moderate concern 13.8%
Severe concern 7.8%
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

4334-4336 20Th St event timeline

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

2026
311 Request Apr 09
Blocking driveway cite only
Parking Enforcement

See all 3 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4334-4336 20Th St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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