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949-951 York St

Inner Mission, SF 94110 4143028 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 Inner Mission
At or below average
avg 2.6
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.6.

Rent & eviction protection

Is 949-951 York 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 area1,051 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4143028
Ownership

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

Owner name
Nancy A Chieng Trust
Mailing address
Nancy A Chieng Trustee P O Box 2805 Menlo Park CA 94026
Last sale
110703

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.

951 York St, San Francisco, CA 94110
949 York St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 949-951 York Street is a two-unit, two-story multi-family residential building located in San Francisco's Inner Mission neighborhood. Built in 1900 and currently owned by the Nancy A Chieng Trust, this flats and duplex structure has undergone several documented improvements and faced various maintenance challenges over the years. The building received significant repairs in 2004 when a curb cut was legalized (with one permit being cancelled) and experienced a complete reroofing project in 2002 costing $9,000. Several concerning issues have been reported over the years, with the most significant being a complaint filed in July 2017 regarding unauthorized construction work involving a "significant rear expansion." Previous maintenance problems were documented in 2014, including issues with graffiti, broken windows, and unmaintained trees, while a housing inspection in 1995 temporarily addressed a concern about an illegal unit.

The property has experienced recurring issues with street maintenance and parking violations in recent years, with multiple 311 calls between 2021 and 2024 reporting loose garbage on the street and sidewalk, and three documented cases of driveway blocking. Most recently, there were two street cleaning incidents in October 2023 and minimal parking complaints in early 2024, suggesting some persistence of maintenance challenges in the immediate vicinity. The building's permit history shows reasonable upkeep through the years, with particular attention to roofing and access modifications, though the 2017 complaint regarding unpermitted work remains notable in terms of building compliance history.

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

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Risk rating

How 949-951 York 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
46th percentile

Out of 2380 buildings in this neighborhood, 1285 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
61%
No DBI
violation
39%
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 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.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 72.2%
Moderate concern 22.4%
Severe concern 5.4%
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

949-951 York St event timeline

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

2023
311 Request Sep 25
Bulky items
Furniture

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 949-951 York 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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