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850-852 York St

Inner Mission, SF 94110 4087010 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 850-852 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 area2,900 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot4087010
Ownership

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

Owner name
Joan Caldwell Living Trust
Mailing address
Joan Caldwell Trustee 852 York St San Francisco CA 94110
Last sale
090612

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.

850 York St, San Francisco, CA 94110
852 York St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The two-unit, two-story residential building at 850-852 York Street in the Inner Mission, owned by the Joan Caldwell Living Trust, is a well-maintained structure dating back to 1900. The property has undergone several significant improvements over recent years, with the most substantial being a complete re-roofing project costing $20,180 in 2015, foundation bolt installation in 2016 for seismic safety ($1,500), stair replacement and garage door upgrade in 2017 ($20,000), and rear door replacements in 2018 ($4,500). A horizontal addition was completed in 1990, and there was an isolated housing inspection complaint in 2012 regarding window work and paint chips that has since been resolved.

More recent issues affecting the property primarily relate to external environmental factors, including recurring concerns about tree root damage to the sidewalk, with the most recent reports in April 2023 and August 2024 noting opened cases with tree roots lifting the sidewalk. There have been multiple reports of abandoned debris and garbage on the street near the property between 2021 and 2024, including two instances of discarded mattresses in June 2024. A missing side sewer vent cover was reported in May 2021 and remains open as of the latest records. The building's maintenance history suggests regular upkeep of structural and safety features, with no significant internal building complaints or safety violations on record in recent years.

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

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Risk rating

How 850-852 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
59th percentile

Out of 2380 buildings in this neighborhood, 976 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.

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 age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 58.5%
Moderate concern 34.9%
Severe concern 6.6%
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

850-852 York St event timeline

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

2023
311 Request Apr 01
Trees - damaging property
Lifted sidewalk tree roots

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 850-852 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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