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1606-1608 20Th St

Potrero Hill, SF 94107 4068009 7 units · 2 fl · 1940

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Potrero Hill
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Potrero Hill average of 1.1.

Rent & eviction protection

Is 1606-1608 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 1940
2 or more units
7 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
Units7
Floors2
Year built1940
Total area4,840 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4068009
Ownership

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

Owner name
Takai Tr
Mailing address
Takai Roy S & Neal A Succes 205 Deanza Blvd Unit 186 San Mateo CA 94402
Last sale
051921

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.

1606 20th St, San Francisco, CA 94107
490 Connecticut St, San Francisco, CA 94107
1608 20th St, San Francisco, CA 94107
Augrented Insights
Initial analysis

The 7-unit multi-family residential building at 1606-1608 20th Street in Potrero Hill, constructed in 1940, has undergone significant recent improvements focusing on modernization and maintenance. Between 2018 and 2022, the property completed numerous upgrades including window replacements (11 windows in 2022, with previous replacements in 2016 and 2012), bathroom remodels (notably in Unit #3 in 2022), and various plumbing and electrical improvements. A notable concern emerged in 2021 when a tenant filed a complaint regarding unauthorized modifications to the building's hot water heating system, though this issue appears to have been resolved. The building had several violations in 2004 related to fire safety, smoke enclosure doors, and plumbing and electrical systems, but these were all abated by May 2004.

The property's maintenance history shows regular upkeep, with multiple units receiving kitchen and bathroom remodels, window replacements, and electrical system upgrades, including a new breaker panel installation in four units in 2012. More recent improvements include a bathroom conversion from tub to shower in 2022 and a gas heater replacement in 2019. The building has experienced some exterior maintenance issues as evidenced by multiple street cleaning requests for garbage and debris, though these were generally resolved promptly. While there have been some safety-related incidents recorded, including malfunctioning alarm systems, none resulted in civilian injuries. The most recent building records show ongoing maintenance attention, with recent permits suggesting active management of the property's upkeep.

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

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Risk rating

How 1606-1608 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
9th percentile

Out of 726 buildings in this neighborhood, 661 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
48%
No DBI
violation
52%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building size

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

12-Month severity forecast
No violation 34.7%
Moderate concern 36.8%
Severe concern 28.5%
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

1606-1608 20Th St event timeline

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

2026
311 Request Jun 03
Other illegal parking
Parking Enforcement

See all 12 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1606-1608 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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