Free SF apartment background check

1322-1324 20Th Ave

Central Sunset, SF 94122 1774040 2 units · 3 fl · 1915

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 Central Sunset
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Central Sunset average of 0.7.

Rent & eviction protection

Is 1322-1324 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 1915
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
Floors3
Year built1915
Total area3,370 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1774040
Ownership

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

Owner name
Gao Willie Jr
Mailing address
1155 Munich St San Francisco CA 94112
Last sale
011618

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1322 20th Ave, San Francisco, CA 94122
1324 20th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The three-story multi-family residential building at 1322-1324 20th Avenue in the Central Sunset neighborhood, owned by Willie Gao Jr., was constructed in 1915 and originally designed as a flats/duplex structure with two units. The property has undergone significant recent modifications, most notably in 2022 when permits were filed for the creation of a third unit in the attic and the installation of an additional ADU (Accessory Dwelling Unit) on the first floor, representing an effort to legalize previously unauthorized modifications under California Government Code 65852.2. These changes included reconfiguring existing bedrooms and bathrooms to accommodate new hall egress requirements. The building has a documented history of construction-related disturbances, with multiple noise complaints filed between 2020 and 2021, including two notable illegal construction complaints in January and October 2021, though the January complaint is no longer active. Earlier renovations include a bathroom remodel completed in 2021 and various minor modifications dating back to 2003.

The property has experienced several maintenance and quality of life issues, as evidenced by multiple 311 calls, particularly regarding noise disturbances during the construction period in early 2021. Two general cleaning issues were reported in 2018 regarding loose garbage on the street. Planning records indicate efforts to legalize various unpermitted modifications, including a rear deck and landing alterations, though some permits have expired or been marked as "Rebe value." A 500W welfare check incident was recorded with no civilian injuries noted. While the recent permit activity suggests the owner is actively working to bring the property into compliance with current regulations, the building's history shows a pattern of unauthorized modifications and subsequent legalization efforts, along with recurring noise disturbances during construction periods.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 1322-1324 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
88th percentile

Out of 814 buildings in this neighborhood, 98 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

Building age

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

12-Month severity forecast
No violation 74.8%
Moderate concern 20.3%
Severe concern 4.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1322-1324 20Th Ave apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

1322-1324 20Th Ave event timeline

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

2022
Planning Project Oct 11
Legalize ground floor unit as ADU per CA Government Code Section 65852.2 and minor alterations to entrance interior alterations to third floor unit (1322).
Closed
Planning ProjectJul 18
Legalize attic level unit per Ordinance No 43-14 and legalize unpermitted portion of rear deck, landings, and stairs.

See all 9 events

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

Unlock complete timeline
Every record we have

Full data for 1322-1324 20Th Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

Watch 1322-1324 20Th Ave
Get alerted the moment a new violation or complaint is filed.