Free SF apartment background check

4349 20Th St

Eureka Valley/Dolores Heights, SF 94114 2751020A 2 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 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 4349 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
2 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
Units2
Floors3
Year built1910
Total area2,807 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2751020A
Ownership

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

Owner name
Wesley T Chan Revoc Lvg Tr
Mailing address
4349 20th St San Francisco CA 94114
Last sale
120517

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story multi-family residential building at 4349 20th Street, located in the Eureka Valley/Dolores Heights neighborhood, has undergone significant renovations and improvements over the past two decades. Built in 1910 and currently owned by the Wesley T Chan Revocable Living Trust, this two-unit building has seen extensive modernization work between 2013 and 2014, including a major renovation project that sparked multiple building complaints due to work exceeding the scope of permits, particularly involving the entire back of the house. The renovation period included comprehensive updates to both units, with specific improvements to kitchen and bathroom facilities, window replacements, and electrical system upgrades. Earlier improvements in 2011-2012 focused on bathroom remodeling and fireplace replacement. The building's infrastructure has received regular attention, including a roof replacement in 2000, front stair repairs, and various plumbing upgrades including a recent house trap replacement in 2022 and mini-split air conditioner installation.

The property has experienced some maintenance challenges, particularly regarding external features such as trees causing sidewalk damage, with multiple reports between 2014 and 2022 about lifted sidewalk conditions. There are documented concerns about pavement defects near the property, with cases from 2014 showing some resolution through city intervention. The building's systems have been systematically updated over the years, with recent plumbing work completed in 2022, and electrical systems receiving substantial attention during the 2013-2014 renovation period, although one major electrical permit from April 2014 was cancelled. The property has maintained active compliance with building codes, with all major renovation permits eventually receiving final inspections, though some original permits expired during the course of work. The most recent building-related activity was recorded from 2022, with minimal recent maintenance issues reported.

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

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Risk rating

How 4349 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 location

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Construction spend, owner's portfolio

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

12-Month severity forecast
No violation 66.1%
Moderate concern 24.5%
Severe concern 9.4%
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

4349 20Th St event timeline

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

2026
Building Permit Jun 10
Reroof hot works
$20,000 · Issued

See all 3 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4349 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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