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3433-3437 20Th St

Inner Mission, SF 94110 3610048 6 units · 3 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 3433-3437 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
6 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units6
Floors3
Year built1900
Total area5,640 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3610048
Ownership

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

Owner name
Sf Baker Investments Llc
Mailing address
Po Box 401210 San Francisco CA 94140
Last sale
090711

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.

3433 20th St, San Francisco, CA 94110
3437 20th St, San Francisco, CA 94110
3435 20th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story multi-family residential building at 3433-3437 20th Street in the Inner Mission, owned by SF Baker Investments LLC, is a 6-unit apartment complex constructed in 1900. The property has undergone significant improvements and maintenance work over the past 15 years, with notable recent attention to safety and infrastructure. Most importantly, the building completed its mandatory soft-story retrofit in 2017 (Tier 3) at a cost of $35,000, ensuring compliance with seismic safety requirements. Other significant improvements include a comprehensive electrical service upgrade in 2010 ($12,000), including the replacement of the 200-amp main service with updated equipment, bathroom and kitchen renovations on multiple floors in 2012-2013, and various plumbing upgrades including water heater installations and gas line work.

The building has experienced several maintenance and safety-related issues over its history, though most have been properly addressed. Historical violations from the early 2000s included concerns about mold, inadequate lighting, and fire safety issues, all of which were abated by April 2003. The property underwent regular routine inspections by Housing Inspection Services in 2010, 2014, and 2015, with the most recent inspection not revealing any active violations. Recent 311 calls (2022-2024) primarily concern external issues such as graffiti, street cleaning, and parking violations, rather than building-specific concerns. The building has demonstrated a pattern of proactive maintenance and compliance with safety requirements, as evidenced by the completion of major retrofit work and prompt addressing of identified violations.

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

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Risk rating

How 3433-3437 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
61th percentile

Out of 2380 buildings in this neighborhood, 928 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
69%
No DBI
violation
31%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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 47.9%
Moderate concern 34.2%
Severe concern 17.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

3433-3437 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 3433-3437 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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