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3277-3279 20Th St

Inner Mission, SF 94110 3612043 2 units · 2 fl · 1906

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 3277-3279 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 1906
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
Floors2
Year built1906
Total area2,600 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3612043
Ownership

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

Owner name
Wood Rex Raymond&See Carol
Mailing address
P O Box 3024 Ben Lomond CA 95005
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.

3277 20th St, San Francisco, CA 94110
3279 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The two-unit residential building at 3277-3279 20th Street in San Francisco's Inner Mission is a two-story flats and duplex structure built in 1906, currently owned by Rex and Carol Wood. The building's maintenance record shows a single permitted improvement - a $6,300 reroofing project completed in July 2007. The property has experienced significant street and sidewalk cleaning issues in recent years, particularly in 2024-2025, with multiple reports of garbage and debris, though most of these cases were resolved without requiring further action. There have been two documented encampment-related incidents near the property (October 2022 and August 2024), and a notable instance of human or animal waste near the property in April 2023, which was determined to be on private property rather than the public sidewalk.

The building's vicinity has faced several infrastructure and public space challenges, including a flooding/sewer issue on the street reported in August 2022, and questions around shared spaces and health violations that were ultimately determined not to be related to the building itself. In 2022, there were two separate investigations regarding shared spaces - one related to a violation at the roadway and another involving a child request regarding trash and waste management, though both cases were either abated or not directly related to the property. While the building itself may not have experienced any direct issues requiring intervention, the surrounding area has faced persistent challenges with public space maintenance and infrastructure, as evidenced by multiple 311 calls over recent years.

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

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Risk rating

How 3277-3279 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.

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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 74.1%
Moderate concern 15.9%
Severe concern 10.0%
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

3277-3279 20Th St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 3277-3279 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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