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4159-4163 20Th St

Eureka Valley/Dolores Heights, SF 94114 3603080 3 units · 3 fl · 1900

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

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
0
FewerMore

This building has 0 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.4.

Rent & eviction protection

Is 4159-4163 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
3 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 1900
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
Units3
Floors3
Year built1900
Total area5,250 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3603080
Ownership

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

Mailing address
Rosenblatt Jay Ttee 4159 20Th St San Francisco CA 94114
Last sale
—

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.

4159 20th St, San Francisco, CA 94114
4163 20th St, San Francisco, CA 94114
4161 20th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 4159-4163 20th Street, located in the Eureka Valley/Dolores Heights neighborhood, has a documented history dating back to 1900. The property, currently owned by Rapp-rosenblatt Revoc Tr, is a three-story flats and duplex structure that has undergone several maintenance and repair works over the past four decades. Most notably, a significant roof replacement was completed in 2010 at a cost of $15,000, and a water heater was replaced in 2016. The building has maintained a relatively good safety record, with three routine housing inspections conducted in 2002, 2007, and 2012 showing no violations.

Historical repairs include structural work in the 1980s to address mudsill damage and install aluminum windows, as well as garage repairs following auto collision incidents in 1991. Recent concerns have primarily revolved around parking issues, with multiple complaints about illegal parking and driveway blocking between 2018 and 2023. There were also two complaints regarding clutter/hoarder concerns in April 2020, though these were either accepted or closed with no action required. Other recent incidents include tree maintenance requests in 2017 and various parking enforcement matters, including a defaced sign repair in August 2023. The building's maintenance record indicates regular upkeep, with no major safety violations or habitability issues documented in recent years.

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

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Risk rating

How 4159-4163 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
48thpercentile

Out of 1278 buildings in this neighborhood, 665 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
73%
No DBI
violation
27%
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.

Building age

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

12-Month risk forecast
Low failure risk 27%
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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8 found
The story over time

4159-4163 20Th St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 4159-4163 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 4159-4163 20Th St compares to the neighborhood

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