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562-564 20Th Ave

Central Richmond, SF 94121 1562028 2 units · 2 fl · 1920

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 Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 562-564 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 1920
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 built1920
Total area2,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1562028
Ownership

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

Owner name
Hong Douglas N
Mailing address
564 20th Ave San Francisco CA 94121
Last sale
000000

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.

564 20th Ave, San Francisco, CA 94121
562 20th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 562-564 20th Avenue in San Francisco's Central Richmond district is a two-unit, two-story multi-family residential building constructed in 1920 and currently owned by Douglas N. Hong. The building has undergone several significant improvements in recent years, including the installation of solar panels (2.28 kW system in 2017), an electrical upgrade to 200amp service (2015), and two separate solar PV installations in 2014-2017. More recent maintenance work includes a substantial reroofing project completed in 2022 costing $28,000, though there was also a notable soil stabilization geogrouting project conducted in March 2022 in response to excavation work at a neighboring property.

The building has experienced several maintenance and infrastructure issues over the years, with patterns suggesting periodic sewer system challenges. Most recently, in January 2024 and December 2015, there were reports of sewer backups involving the 4-inch sewer vent system. The property has also undergone various exterior maintenance work, including stucco replacement (2001) and sidewalk repairs. While the building has had several interactions with city services, most issues have been resolved promptly. Recent incidents include a 2023 parking violation and a 2022 building inspection request, though these were not directly related to the building's structural or maintenance conditions. The property's historical records show proper maintenance of essential systems, with the owner demonstrating proactive investment in solar energy infrastructure and building upgrades over the past decade.

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

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Risk rating

How 562-564 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
91th percentile

Out of 2250 buildings in this neighborhood, 202 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
92%
No DBI
violation
8%
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.

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

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 87.3%
Moderate concern 9.9%
Severe concern 2.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

562-564 20Th Ave event timeline

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

2025
Electrical Permit Feb 02
Upgrade wiring for entire building (562 & 564) with surface mount wiremolding
Complete

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 562-564 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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