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840-844 Treat Ave

Inner Mission, SF 94110 3613040 6 units · 3 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 840-844 Treat Ave 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
6 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units6
Floors3
Year built1900
Total area3,612 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3613040
Ownership

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

Owner name
Lothar Determann Lvg Tr
Mailing address
C/o Jack Murray 677 Portola Dr San Francisco CA 94127
Last sale
062619

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.

840 Treat Ave, San Francisco, CA 94110
844 Treat Ave, San Francisco, CA 94110
842 Treat Ave, San Francisco, CA 94110
Augrented Insights
Initial analysis

840-844 Treat Avenue is a 5-unit, 2-story multi-family residential building located in the Inner Mission neighborhood, constructed in 1900 and currently owned by the Lothar Determann Living Trust. The property has undergone several significant improvements over the past two decades, with the most recent renovation completed in 2022 involving a kitchen and bathroom remodel costing $16,000, including electrical upgrades and plumbing work. Major structural and safety improvements were made in 2002-2003, including an electrical service upgrade to 200 amps and significant seismic retrofitting work involving brick foundation replacement, shear wall installation, and seismic tie-downs. The building has a history of maintenance issues, with multiple housing inspection cases filed between 2004 and 2011 addressing concerns such as fire safety equipment, fire escape maintenance, and general repairs. A complaint about unauthorized construction in 2022 and an encroachment issue regarding the roof's southern extension (2018) indicate some continuing regulatory compliance challenges. Recent tenant complaints primarily focus on parking enforcement issues, with multiple citations issued for driveway blocking between 2024-2025.

The building's maintenance history shows regular investment in improvements, including multiple kitchen and bathroom remodels (2002, 2004, 2006, 2022) and roof work in 2015. While most building violations and complaints have been resolved, there have been recurring issues with permit compliance, as evidenced by several complaints about unpermitted work and an expired permit for a structural beam installation in 2003. The property underwent a tenant buyout of three units in December 2023, with a recorded payment of $27,500. Infrastructure maintenance has been a focus, with repeated electrical system upgrades and multiple plumbing improvements documented through various permits. The most recent 311 calls primarily relate to parking enforcement, indicating ongoing challenges with street access around the property.

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

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Risk rating

How 840-844 Treat Ave'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
44th percentile

Out of 2380 buildings in this neighborhood, 1333 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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 39.8%
Moderate concern 39.6%
Severe concern 20.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

840-844 Treat Ave apartment reviews

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The story over time

840-844 Treat Ave event timeline

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

2024
311 Request Dec 24
Parking on sidewalk
Parking Enforcement

See all 9 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 840-844 Treat Ave 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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