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85-89 Duncan St

Bernal Heights, SF 94110 6598003 3 units · 2 fl · 1989

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Bernal Heights
At or below average
avg 1.2
0
FewerMore

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

Rent & eviction protection

Is 85-89 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 1989
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH3
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors2
Year built1989
Total area4,659 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6598003
Ownership

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

Owner name
Daniel K S & Alice L Chen R
Mailing address
85 Duncan St San Francisco CA 94110
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.

618 San Jose Ave, San Francisco, CA 94110
87 Duncan St, San Francisco, CA 94110
85 Duncan St, San Francisco, CA 94110
89 Duncan St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The two-story, three-unit multi-family residential building at 85-89 Duncan Street in Bernal Heights, owned by Daniel K S & Alice L Chen R, was constructed in 1989 and has undergone several significant improvements over the years. The most recent building-related concern was filed in December 2023, regarding unpermitted work in the garage with debris management issues, though this complaint is currently listed as not active. The property has undergone several permitted improvements, including a 2016 kitchen remodel in Unit 1 with comprehensive electrical upgrades, water heater replacement in 2017, and various plumbing modifications in 2016. Historical records show regular routine apartment house inspections in 1999, 2010, and 2017, suggesting ongoing compliance with housing standards.

Recent activity around the property has generated multiple 311 calls between late 2023 and 2024, primarily regarding street-level issues such as garbage, debris, and parking concerns. There appear to be some infrastructure maintenance matters in the vicinity, including an open sidewalk defect case recorded in June 2024 and a previously identified collapsed sidewalk issue in November 2023. While there was one recorded fire incident related to a false alarm, it did not involve any injuries or significant events. The building's permit history indicates regular maintenance and upgrades over time, with particular attention to kitchen modernization and utility systems, though the recent unpermitted work complaint raises some concerns about adherence to proper construction protocols.

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

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Risk rating

How 85-89 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
29th percentile

Out of 1276 buildings in this neighborhood, 906 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

DBI tenant complaints (past 7 years)

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

Neighborhood location

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

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 55.0%
Moderate concern 32.6%
Severe concern 12.4%
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

85-89 Duncan St event timeline

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

2025
311 Request Apr 16
Public utilities commission
billing customer callback

See all 4 events

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

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Every record we have

Full data for 85-89 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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