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3325-3327 20Th St

Inner Mission, SF 94110 3611061 2 units · 2 fl · 1900

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 Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 3325-3327 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
NC2
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 built1900
Total area2,935 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3611061
Ownership

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

Owner name
Wong Trusts
Mailing address
William V Wong 39 Shore View Ave San Francisco CA 94121
Last sale
100419

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.

3325 20th St, San Francisco, CA 94110
3327 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The Wong Trusts-owned property at 3325-3327 20th Street in San Francisco's Inner Mission neighborhood is a two-story, multi-family residential building with two units, constructed in 1900. The building underwent significant improvements in 2018, including a comprehensive second-floor apartment remodel ($80,000), kitchen remodeling, and installation of new furnace and water heater ($20,000). Electrical upgrades were substantial, with original plans for multiple circuits, lights, and appliance installations, though the permits were ultimately cancelled. The building's exterior received attention in 2018-2019, with window replacements and facade remodeling, including a subsequent modification for accessibility compliance with power door operators.

Recent history (2022-2024) shows a series of maintenance and environmental challenges, including multiple 311 calls regarding street cleaning and debris issues, with at least two incidents involving human waste or urine in 2024. A sewage backup incident was reported and resolved in March 2022. The property underwent administrative address corrections in 2018 to properly designate upper and lower levels, and several street space permits were issued between 2018-2019. While the building has received various upgrades and improvements, including recent work related to accessibility compliance, the ongoing issues with street maintenance and sanitation in the immediate vicinity have been a recurring theme in recent years.

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

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Risk rating

How 3325-3327 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
89th percentile

Out of 2380 buildings in this neighborhood, 262 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Neighborhood location

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

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 79.6%
Moderate concern 16.0%
Severe concern 4.4%
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

3325-3327 20Th St event timeline

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

2019
Electrical Permit Oct 04
Install 0ne switch for door open and close
Complete

See all 1 events

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

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Every record we have

Full data for 3325-3327 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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