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3643-3645 Buchanan St

Marina, SF 94123 0460A003 13 units · 3 fl · 1973

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Marina
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 3643-3645 Buchanan 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 1973
2 or more units
13 units
Property type
Multi-Family Residential
Zoning
NC2
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
Units13
Floors3
Year built1973
Total area12,380 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0460A003
Ownership

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

Owner name
Cohen Menahem M Trustee
Mailing address
250 El Camino Del Mar San Francisco CA 94121
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.

3645 Buchanan St, San Francisco, CA 94123
3643 Buchanan St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The 13-unit, 3-story multi-family residential building at 3643-3645 Buchanan Street in the Marina neighborhood, owned by Cohen Menahem M Trustee, has undergone several significant structural and safety improvements since its construction in 1973. The most substantial recent work was the completion of a mandatory soft-story retrofit in 2018, which included additional ADA bathroom upgrades, demonstrating compliance with seismic safety requirements (Tier 4 status: Work Complete, CFC Issued). The building's foundation history includes a serious incident in 2004 when the north property line foundation was undermined by excavation at a neighboring property, requiring remedial work to fill voids in the foundation, which was completed by February 2005.

The property has experienced recurring fire safety inspections and violations between 2016-2024, with issues ranging from combustible materials and alarm systems to extinguisher maintenance and hazardous materials, though most have been promptly corrected. Recent 311 calls indicate ongoing maintenance needs, including an open sidewalk defect case from November 2024 involving tree root damage, and various sidewalk cleaning issues in 2021-2024. While there is one active security violation from 2000 regarding security requirements, the building has generally maintained compliance with major safety requirements, though some historical violations from 2004-2006 related to foundation work and egress obstruction have been resolved.

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

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Risk rating

How 3643-3645 Buchanan 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
5th percentile

Out of 988 buildings in this neighborhood, 939 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
33%
No DBI
violation
67%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 25.3%
Moderate concern 44.2%
Severe concern 30.5%
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

3643-3645 Buchanan St event timeline

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

2026
Fire Complaint Apr 21
Extinguishers
Violation Issued
Fire ComplaintApr 21
Alarm Systems

See all 10 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3643-3645 Buchanan 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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