Free SF apartment background check

795 20Th Ave

Central Richmond, SF 94121 1663018 3 units · 2 fl · 1923

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Richmond
Above average
avg 0.5
4
FewerMore

This building has 4 novs (7y), above the Central Richmond average of 0.5.

Rent & eviction protection

Is 795 20Th Ave 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 1923
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM2
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
Floors2
Year built1923
Total area4,831 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1663018
Ownership

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

Owner name
Chu S Sun
Mailing address
4402 Fulton St San Francisco CA 94121
Last sale
082313

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.

4400 Fulton St, San Francisco, CA 94121
795 20th Ave, San Francisco, CA 94121
4402 Fulton St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The 795 20th Avenue property is a two-story, three-unit multi-family residential building constructed in 1923, with a notably contentious history regarding unit legality and habitability issues. The building has been in the spotlight for multiple code enforcement actions, most significantly in 2011 when it was cited for operating as an illegal hotel with 17 guest rooms, a violation that required substantial remedial work costing $2,500 to revert back to its legal three-unit configuration. More recently, there have been three separate complaints between 2020 and 2023 alleging the presence of illegal units or additional unauthorized bedrooms, with one complaint in 2023 reporting "at least 9 rooms being rented out on the top floor."

The property has experienced recurring maintenance and habitability issues, particularly during 2016-2019, including multiple violations related to heating systems, security concerns (such as a damaged entry door), plumbing problems (sink repairs needed), and building safety issues including mold and defective flues/vents. Tenants reported various quality-of-life concerns including inadequate heating, moisture problems leading to mold, and bathroom privacy issues. A significant number of building permits were processed, most recently in 2022 for final inspections related to previous violation remediation, and in 2017 for repairs to address dry rot in external structures.

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

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Risk rating

How 795 20Th Ave'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
12th percentile

Out of 2250 buildings in this neighborhood, 1980 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
60%
No DBI
violation
40%
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.

DBI tenant complaints (past 7 years)

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Construction spend, owner's portfolio

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

12-Month severity forecast
No violation 37.9%
Moderate concern 43.3%
Severe concern 18.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

795 20Th Ave apartment reviews

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The story over time

795 20Th Ave event timeline

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

2026
311 Request Jun 01
Parking on sidewalk
Parking Enforcement

See all 18 events

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

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Every record we have

Full data for 795 20Th Ave 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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