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4354-4356 20Th St

Eureka Valley/Dolores Heights, SF 94114 2697020 2 units · 2 fl · 1925

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Eureka Valley/Dolores Heights — not a forecast
At or below average
avg 1.4
1
FewerMore

This building has 1 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.4.

Rent & eviction protection

Is 4354-4356 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 1925
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.

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 1925
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
Floors2
Year built1925
Total area3,064 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2697020
Ownership

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

Mailing address
4356 20th St San Francisco CA 94114
Last sale
March 30, 2023

Landlord portfolio

Other SF properties this owner holds, with a risk rating for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

4356 20th St, San Francisco, CA 94114
4354 20th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit residential building at 4354-4356 20th Street, located in the Eureka Valley/Dolores Heights neighborhood, is a two-story flats and duplex structure built in 1925, currently owned by Emil & Carolina Zollinger T. The property has undergone several significant maintenance and repair projects over its history, including a notable facade restoration in 2004 costing $13,800 to replace approximately 200 square feet of brick above the garage. A concerning incident occurred in May 2004 when a car rolled over and damaged the building's brickwork, though this was promptly addressed within a month. The building's roof was previously reroofed in 1995, but that permit has since expired.

Recent records indicate ongoing challenges with parking enforcement, particularly in the past year, with multiple citations issued for driveway blocking between December 2023 and January 2025, though some incidents could not be validated or resulted in officers being unable to locate the offending vehicles. There have also been several instances of garbage and debris issues reported in 2024, including incidents requiring intervention from both sanitation and environmental services. A street space permit was issued in 2018, following similar permits in 2005, 2007, and 2009, suggesting ongoing maintenance of public access areas around the property. A 440 electrical equipment problem was recorded as a fire incident, though no civilian injuries were reported. The building has two recorded tenant buyout notices, though no dates are specified in the available data.

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

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Risk rating

How 4354-4356 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
47thpercentile

Out of 1278 buildings in this neighborhood, 677 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Neighborhood (ZIP code)

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

Construction spend, owner's portfolio

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

12-Month risk forecast
Moderate failure risk 28%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

4354-4356 20Th St event timeline

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

2025
Plumbing Permit Sep 17
Work category: 1p; replace the house trap with a new one
Complete
311 RequestAug 21
Blocked sidewalk

See all 12 events

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

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Every record we have

Full data for 4354-4356 20Th St apartments

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

Side by side

How 4354-4356 20Th St compares to the neighborhood

This building against comparable properties in Eureka Valley/Dolores Heights. Toggle filters to narrow the peer group.

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