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3709-3711 20Th St

Eureka Valley/Dolores Heights, SF 94110 3607074 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 3709-3711 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
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 built1900
Total area2,068 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3607074
Ownership

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

Owner name
Paul A Disangro Living Trus
Mailing address
Paul A Disangro Trustee 3711 2Oth Street San Francisco CA 94110
Last sale
052107

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.

3709 20th St, San Francisco, CA 94110
3711 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 3709-3711 20th Street is a two-unit, two-story multi-family residential building located in the Eureka Valley/Dolores Heights neighborhood, built in 1900 and currently owned by the Paul A Disangro Living Trust. The building's maintenance history shows several significant improvements, including a major renovation in 2005 costing $87,000 that involved deck structure removal and window replacements, and an electrical upgrade in 2004 converting overhead to underground 200-amp service. The property has faced some compliance issues, most notably in 2016 when two complaints were filed regarding unpermitted construction work in the backyard involving fence installation, concrete work, retaining wall construction, and demolition of an outbuilding.

The building has experienced recurring plumbing issues, with documented sewage backup incidents in 2019 and 2020 that required municipal intervention. Recent maintenance activity includes tree limb removal in 2022 and debris cleanup in 2021. The property has had three sewer-related service calls in 2019-2020 and multiple instances of driveway blocking that required parking enforcement intervention between 2019 and 2024. Planning records indicate a proposed project to construct a single-car garage at the street and restore the building to a single-family dwelling status, though the current use remains classified as multi-family residential. The building's permit history shows various maintenance and improvement projects over decades, including a roof replacement in 1991 and rain gutter installation in 1983, demonstrating ongoing upkeep of the property.

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

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Risk rating

How 3709-3711 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
63th percentile

Out of 1278 buildings in this neighborhood, 473 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
81%
No DBI
violation
19%
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 (ZIP code)

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

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 83.0%
Moderate concern 11.1%
Severe concern 5.9%
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

3709-3711 20Th St event timeline

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

2025
311 Request Jun 07
Garbage and debris
furniture

See all 1 events

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

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Every record we have

Full data for 3709-3711 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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