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2607 Folsom St

Inner Mission, SF 94110 3639012D 2 units · 2 fl · 1900

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Mission
Above average
avg 2.6
3
FewerMore

This building has 3 novs (7y), above the Inner Mission average of 2.6.

Rent & eviction protection

Is 2607 Folsom 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
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
Units2
Floors2
Year built1900
Total area1,768 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3639012D
Ownership

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

Owner name
Robert Trumbull Lvg Tr
Mailing address
Trumbull Robert Ttee 2607 Folsom St San Francisco CA 94110
Last sale
122806

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The two-unit residential building at 2607 Folsom Street in the Inner Mission, owned by Robert Trumbull Living Trust, is a two-story flats & duplex structure built in 1900. The property has experienced several significant maintenance and compliance issues over the past few years, particularly concerning its rear exit stairs and deck. In 2018, a permitted project (number 201804176567) was initiated to reconstruct the rear exit stairs and deck, which included replacing handrails and guardrails at a cost of $40,000. However, this work led to multiple complaints and violations, including a 2019 complaint about unpermitted reconstruction work, resulting in a Notice of Violation and monitoring fee that was finally abated in July 2022. Additional complaints were filed in 2020 and most recently in January 2025 regarding unauthorized construction work, including a reportedly oversized stairway and deck.

The building's maintenance history includes a concerning incident in 2010 involving a leaking bathtub that resulted in water damage, mold, and pest infestations, though this issue was abated within three months. The property underwent an electrical upgrade in 2004 with the conversion of overhead service to underground. More recently, from September to October 2024, there were multiple complaints about illegal parking in the vicinity, with at least two resulting in citations. Historical records show two fire safety complaints in July 2005 regarding blocked exits, though these were promptly corrected. A CO detector activation was also recorded but was determined to be a false alarm with no civilian injuries reported.

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

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Risk rating

How 2607 Folsom 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
18th percentile

Out of 2380 buildings in this neighborhood, 1952 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
41%
No DBI
violation
59%
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 complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

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.

12-Month severity forecast
No violation 29.8%
Moderate concern 47.6%
Severe concern 22.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

2607 Folsom St event timeline

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

2026
Building Violation (NOV) Jan 20 Serious
A complait investigation revealed that modifications had been performed in the garage. sheetrock has been installed with new partitions. recessed lighting, electrical outlets, possible new plumbing. window installed in new partition. code/section: sfbc 103a monthly monitoring fee applies. code/section: sfbc 110a, table 1a-k
DBI ComplaintJan 20
Date last observed: 17-jan-26; identity of person performing the work: robert trumbull; exact location: basement; building type: residence/dwelling work w/o permit; work beyond scope of permit; other building; ; additional information: there is work being done currently in the basement / garage area to finish it and it looks like it is intended to be a new residential unit. in addition, a new structure was built in the backyard last year. together these projects double occupancy of the building, and impacts neighboring residents and businesses. i am concerned that this work is being done without proper permitting and am filing this complaint to ensure that the basement and backyard work will be inspected and is done safely and up to code.;

See all 10 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2607 Folsom 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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