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123-129 Duncan St

Noe Valley, SF 94110 6599032 4 units · 2 fl · 1936

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 123-129 Duncan 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 1936
2 or more units
4 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
Units4
Floors2
Year built1936
Total area4,616 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6599032
Ownership

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

Owner name
Tom & Yee Family Trust
Mailing address
C/o William Quan 2374 27Th Ave San Francisco CA 94116
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.

123 Duncan St, San Francisco, CA 94110
129 Duncan St, San Francisco, CA 94110
125 Duncan St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The Tom & Yee Family Trust property at 123-129 Duncan Street in Noe Valley is a two-story, four-unit multi-family residential building constructed in 1936. The building has undergone several significant improvements over the past two decades, with the most recent work completed in October 2023 involving the replacement of furnaces at units 127 and 129. A notable kitchen remodel was completed in 2014, including new appliances, cabinets, flooring, and electrical updates. The building experienced some maintenance challenges in 2011, when multiple violations were recorded regarding interior conditions, including issues with walls, ceilings, floors, and kitchen cabinets, though all these violations were officially abated by August 2011.

The building's history includes several plumbing and safety concerns, particularly in the late 2000s and 1990s. A 2007 incident involving unauthorized sewer replacement work required violation correction, while two electrical complaints from 1996 regarding bathroom electrical issues were promptly resolved. Earlier maintenance work includes roof replacement in 2000 and vinyl window installation in 2003. More recently, there have been multiple reports of sidewalk parking violations near the property, with the most recent activity occurring between January 2020 and October 2023, though these issues are external to the building itself and primarily relate to street parking enforcement. The property appears to have maintained compliance with building codes since addressing the 2011 violations, with no recurring or active violations on record.

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

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Risk rating

How 123-129 Duncan 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
38th percentile

Out of 1879 buildings in this neighborhood, 1165 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
68%
No DBI
violation
32%
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.

Neighborhood (ZIP code)

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

Neighborhood location

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

12-Month severity forecast
No violation 48.5%
Moderate concern 16.1%
Severe concern 35.5%
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

123-129 Duncan St event timeline

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

2023
Plumbing Permit Oct 10
Work category: 2m ; replace two furnaces at 127 and 129 duncan st.
Complete

See all 1 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 123-129 Duncan St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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