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3630 20Th St

Mission Dolores, SF 94110 3597016 2 units · 1 fl · 1906

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 Mission Dolores — not a forecast
At or below average
avg 2.9
0
FewerMore

This building has 0 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 3630 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 1906
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 1906
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
Floors1
Year built1906
Total area2,635 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3597016
Ownership

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

Mailing address
Bailey Robert H, Trustee 3632 20Th St San Francisco CA 94110
Last sale
July 13, 1989

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 3630 20th Street is a two-unit, one-story multi-family residential building located in the Mission Dolores neighborhood, owned by the Bailey Family Trust. Built in 1906, this flats and duplex structure has undergone several significant maintenance and improvement projects over the past two decades. Most notably, in 2015 the building received an $22,338 window replacement project, followed by a similar window upgrade in 2011 costing $5,451, with both installations meeting modern energy efficiency standards (U-valve ratings of <.32 and 0.30, respectively). Earlier maintenance work included a roofing project from 1999, though this permit has since expired. The property has also required multiple street space permits from 2018, with four separate permits issued between July and October of that year, each with a nominal cost of $1.00.

Recent incidents and maintenance records from 2022 to 2024 indicate some ongoing challenges with the property's immediate surroundings, particularly concerning street cleanliness and graffiti. In late 2024, there were two documented instances of non-offensive graffiti on the residential building, though these were inspected and resulted in posted notices. The building's exterior environment has experienced recurring issues with loose garbage, as evidenced by multiple street cleaning calls between 2022 and 2024. A notable infrastructure issue occurred in June 2022 with a sewage backup involving a 4-inch sewer vent, though this was promptly addressed by Public Utilities Commission Sewer Operations. The property has maintained compliance with necessary permits and inspections, and while recent years have shown some external cleanliness challenges, these have generally been addressed through municipal services.

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

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Risk rating

How 3630 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
83rdpercentile

Out of 799 buildings in this neighborhood, 136 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
82%
No DBI
violation
18%
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 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.

Construction spend, owner's portfolio

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

12-Month risk forecast
Low failure risk 18%
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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The story over time

3630 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 3630 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 3630 20Th St compares to the neighborhood

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