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2338-2340 20Th Ave

Parkside, SF 94116 2348032 2 units · 3 fl · 1930

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 Parkside
At or below average
avg 0.8
0
FewerMore

This building has 0 novs (7y), at or below the Parkside average of 0.8.

Rent & eviction protection

Is 2338-2340 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 1930
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 built1930
Total area2,850 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2348032
Ownership

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

Owner name
Shannon S Tan Lvg Tr
Mailing address
Tan Shannon S Trustee 435 Imperial Dr Pacifica CA 94044
Last sale
031716

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.

2338 20th Ave, San Francisco, CA 94116
2340 20th Ave, San Francisco, CA 94116
Augrented Insights
Initial analysis

The two-unit residential building at 2338-2340 20th Avenue in the Parkside neighborhood is a two-story flats and duplex structure built in 1930, currently owned by the Shannon S Tan Living Trust. The property has undergone significant improvements over the past 15 years, with the most recent major renovation being completed in 2021-2024. This included a comprehensive 3rd floor remodel of the upper unit's bathrooms and kitchen, installation of new bathrooms in bedrooms and closets, plus updates to family and furnace systems, with associated plumbing and electrical work ($160,000 total cost). A notable recent addition is the solar installation completed in September 2024, featuring a 7.695 kW system with 19 PV modules and Powerwall battery storage, indicating a commitment to sustainable energy.

The building has a solid record of maintenance and upgrades, including substantial ground floor improvements in 2008 ($30,000), where a playroom, laundry facilities, and half bathroom were added, along with the relocation of two furnaces and water heaters, and front facade stucco repairs. Earlier renovations (2008) included kitchen and bath remodels on the 2nd floor, window replacements, and electrical panel upgrades. The property has experienced some maintenance issues, including an open sidewalk defect reported in 2022, and two resolved incidents in 2017 involving sidewalk cleaning and a sewage backup. The building's maintenance history demonstrates regular upkeep and modernization efforts, with particular attention to updating systems and improving living spaces.

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

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Risk rating

How 2338-2340 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
99th percentile

Out of 255 buildings in this neighborhood, 3 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
94%
No DBI
violation
6%
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 permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

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 86.6%
Moderate concern 10.3%
Severe concern 3.1%
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

2338-2340 20Th Ave event timeline

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

2024
Electrical Permit Sep 04
Plan #6628. residential solar permit. 19 pv modules, 405 watts per module. 7.695 (dc) kw system. batteries, powerwall 13.5 kwh.
Complete

See all 5 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2338-2340 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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