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136 Duncan St

Noe Valley, SF 94110 6594012 2 units · 2 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 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 136 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 1900
2 or more units
2 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
Units2
Floors2
Year built1900
Total area2,414 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6594012
Ownership

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

Owner name
Lau Family 1990 Revoc Tr
Mailing address
Lau David Po Box 320773 San Francisco CA 94132
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.

136 Duncan St, San Francisco, CA 94110
136 B Duncan St, San Francisco, CA 94110
136 A Duncan St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The two-unit, two-story residential building at 136 Duncan Street in Noe Valley, owned by the Lau Family 1990 Revocable Trust, has undergone significant improvements and modifications since 2016. The most substantial work occurred between 2016-2017, when the property underwent a comprehensive renovation to legalize a ground floor unit, including interior remodeling, foundation strengthening, and the installation of a complete fire sprinkler system with monitoring equipment. This period saw the installation of a new 200-amp electrical system, kitchen and bathroom renovations, furnace installation, and various plumbing upgrades including house trap replacement and waste pipe improvements. The building's safety systems were notably enhanced with the addition of fire sprinklers throughout the ground floor and an underground 2" fire service, demonstrating a commitment to modern safety standards.

Prior to these improvements, the building's maintenance history shows attention to structural issues, with documented work on stairs repair due to dry rot in 1993 and foundation work in 1998 (though this permit expired). The property has generated several 311 calls in recent years, primarily related to parking issues (including multiple instances of sidewalk parking between 2018-2022) and some reports of abandoned vehicles, though none of these incidents appear to have directly affected the building's condition or safety systems. A minor fire-related incident was recorded involving a system malfunction, but no civilian injuries were reported. The building's recent history suggests a strong focus on modernization and safety improvements, particularly during the 2016-2017 renovation period, with no significant maintenance issues reported in recent years.

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

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Risk rating

How 136 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
70th percentile

Out of 1879 buildings in this neighborhood, 564 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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 (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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 84.1%
Moderate concern 9.1%
Severe concern 6.8%
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

136 Duncan 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 136 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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