Free SF apartment background check

4221 20Th St

Eureka Valley/Dolores Heights, SF 94114 2752034 7 units · 2 fl · 1927

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 4221 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 1927
2 or more units
7 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
Units7
Floors2
Year built1927
Total area4,064 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2752034
Ownership

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

Owner name
Pasquan Stephen L & Pamela
Mailing address
2300 Bridgeway Blvd Sausalito CA 94965
Last sale
031621

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-story multi-family residential building at 4221 20th Street, owned by Stephen and Pamela Pasquan, was constructed in 1927 and currently contains 6 units. The property has undergone significant safety and modernization improvements over recent years, most notably completing a mandatory soft-story retrofit in 2016 (cost: $64,000), the addition of an Accessory Dwelling Unit (ADU) in 2018, and comprehensive fire safety upgrades including a new fire alarm system (2021, $15,000), fire sprinkler installation (2020, $20,000), and related electrical work. The building has demonstrated ongoing maintenance and improvements, with projects including kitchen renovations, garage door replacements, and plumbing updates completed between 2017-2021.

Historical records from 2002 show several building violations related to fire safety, security, and lead paint concerns, though these were all abated by 2005. There was a notable complaint in April 2020 regarding non-essential construction during stay-at-home orders, and a garage door replacement without permits was addressed in 2017. The property has maintained compliance with more recent regulations, including successfully completing its soft-story retrofit and obtaining the necessary permits for ADU construction. Recent 311 calls primarily relate to minor issues such as illegal postings and parking concerns, rather than structural or safety matters. The building has a total of 6 units and is currently classified as a multi-family residential property with all necessary safety upgrades in place.

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

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Risk rating

How 4221 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
32th percentile

Out of 1278 buildings in this neighborhood, 869 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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

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 51.9%
Moderate concern 35.8%
Severe concern 12.3%
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

4221 20Th St event timeline

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

2025
311 Request Mar 06
Toters left out 24x7
Litter Receptacle Maintenance

See all 13 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4221 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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