Free SF apartment background check

3719 20Th St

Eureka Valley/Dolores Heights, SF 94110 3607072 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 3719 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 area1,560 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3607072
Ownership

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

Owner name
Koubek Steve M
Mailing address
575 Frederick St San Francisco CA 94117
Last sale
121506

Landlord portfolio

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

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Augrented Insights
Initial analysis

This two-unit residential building, located at 3719 20th Street in the Eureka Valley/Dolores Heights neighborhood, is a 2-story flats and duplex structure built in 1900 and currently owned by Steve M Koubek. The property has undergone several significant renovations over the past two decades, including comprehensive updates in 2016 with the installation of a French drain system, waterproof foundation work, concrete walkway repairs, and electrical maintenance, all costing approximately $23,500. The building has seen substantial infrastructure improvements, such as a complete reroofing in 2012 ($3,600), kitchen and bathroom remodels in 2006 ($40,000), and various window replacements and electrical upgrades including a 200-amp service change in 2003. A notable incident occurred in 2006 when two complaints were filed regarding unauthorized construction work, though these were resolved within a week.

Recent maintenance and safety issues have primarily revolved around external factors, including multiple reports of driveway blocking within the past three years (2022-2024), which led to several parking enforcement citations. The property has also experienced some environmental concerns, with two tree-related complaints in 2023/2024 regarding overgrowth and a hanging limb, though one was resolved with adequate clearance confirmation. The building's infrastructure appears to be largely sound, with no major internal maintenance issues reported in recent years. The most recent documented work was a French drain installation in 2016, suggesting this critical water management system was addressed, though periodic checks for water-related issues would be prudent given the building's age and history.

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

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Risk rating

How 3719 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
65th percentile

Out of 1278 buildings in this neighborhood, 447 are predicted to be safer.

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.

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 83.4%
Moderate concern 11.2%
Severe concern 5.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

3719 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 3719 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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