Free SF apartment background check

3726-3730 20Th St

Mission Dolores, SF 94110 3598011 3 units · 3 fl · 1910

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 Mission Dolores
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 3726-3730 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 1910
2 or more units
3 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
Units3
Floors3
Year built1910
Total area4,050 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3598011
Ownership

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

Owner name
Vasquez Jose
Mailing address
3726 20th St San Francisco CA 94110
Last sale
052521

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.

3730 20th St, San Francisco, CA 94110
3726 20th St, San Francisco, CA 94110
3728 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-unit, three-story multi-family residential building at 3726-3730 20th Street in Mission Dolores, owned by Jose Vasquez, has a documented history dating back to its 1910 construction. The property experienced several significant maintenance issues in 2019, including multiple sewage backup incidents (March 15, March 19, and April 12) and subsequent sewer repairs, along with street space modifications. A notable cluster of violations was recorded in April 2002, related to fire safety, building maintenance, and lead paint hazards, though these were all abated by September 2002. The building's maintenance history includes various repairs and improvements, such as stair repairs, roof work, and electrical upgrades (though some permits, like a 2004 electrical project, expired without completion confirmation). Recent activity includes routine inspections, with the most recent being an active 2014 housing inspection.

The property's documented infrastructure issues appear to have stabilized in recent years, with the last major sewer-related incidents occurring in 2019. Historical records show attention to various structural elements over the decades, including stair and step repairs in the late 1980s, iron gate removal in 1997, and work on a damaged bathroom wall in 1996. Outside the building, there have been occasional neighborhood issues addressed through 311 calls, primarily related to street cleaning and parking concerns, with the most recent being a general cleaning request in June 2023. While the building has had its share of maintenance challenges over the years, the prompt resolution of most violations and repairs suggests ongoing attention to property upkeep.

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

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Risk rating

How 3726-3730 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
49th percentile

Out of 799 buildings in this neighborhood, 407 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
64%
No DBI
violation
36%
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 (ZIP code)

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

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month severity forecast
No violation 38.1%
Moderate concern 18.1%
Severe concern 43.9%
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

3726-3730 20Th St event timeline

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

2026
311 Request Jan 16
Garbage and debris
christmas tree

See all 1 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3726-3730 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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