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1924-1930 Polk St

Nob Hill, SF 94109 0596023 2 units · 2 fl · 1904

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 Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1924-1930 Polk 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 1904
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
POLK
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 built1904
Total area2,150 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0596023
Ownership

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

Owner name
Ubben 2000 Trust
Mailing address
Jeffrey & Laura Ubben, Tust 3355 Pacific Ave San Francisco CA 94118
Last sale
010507

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.

1930 Polk St, San Francisco, CA 94109
1924 Polk St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The property at 1924-1930 Polk Street in San Francisco's Nob Hill neighborhood is a 2-unit, 2-story multi-family residential building constructed in 1904, currently owned by the Ubben 2000 Trust. The building has undergone several significant improvements over the years, with the most substantial renovation occurring between 2005-2006 when approximately $116,000 was invested in interior remodeling of the first floor and basement for music class space, including foundation repairs, new accessible restroom installation, and structural improvements with steel tubes and beams. This project also involved electrical upgrades with a new 200-amp service installation and comprehensive wiring work. More recently, in 2013, the building received a complete reroofing with a $21,000 investment.

The property has experienced an unusual cluster of maintenance issues in the surrounding area, with ten Reports of garbage and debris incidents recorded between December 2024 and January 2025, primarily involving abandoned waste and overflowing city garbage cans. There were also two instances of graffiti reported in December 2024, affecting a city receptacle and a mailbox, though these were not considered offensive. Building safety records show two fire department responses - one for a smoke detector activation and another for a false alarm, neither resulting in any injuries. While there was a planning record related to the conversion of the upper floor dwelling unit to commercial use/office/sound studio, this case was closed with no violation found. The building's documented history suggests regular maintenance and improvements have been undertaken, particularly focused on structural and safety enhancements, though the recent spike in street cleaning issues in the vicinity may warrant attention.

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

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Risk rating

How 1924-1930 Polk 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
76th percentile

Out of 1125 buildings in this neighborhood, 270 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 81.0%
Moderate concern 14.4%
Severe concern 4.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

1924-1930 Polk St event timeline

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

2026
311 Request Mar 05
Landscaping
empty tree basin
311 RequestFeb 13
Homelessness and supportive housing

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1924-1930 Polk 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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