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3621-3623 26Th St

Inner Mission, SF 94110 6568022 4 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 3621-3623 26Th 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
4 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
Units4
Floors3
Year built1900
Total area3,342 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6568022
Ownership

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

Owner name
Collins Mark Louis &Oyugi J
Mailing address
313 28th St San Francisco CA 94131
Last sale
062719

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.

3621 26th St, San Francisco, CA 94110
3623 26th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story, four-unit multi-family residential building at 3621-3623 26th Street in the Inner Mission, constructed in 1900, has undergone several significant maintenance and improvement projects over the past decade. Most recently, in August 2023, a $20,000 reroofing project was completed, following the 2021 replacement of eleven window sashes across units 2 and 3, with an emphasis on preserving historical features. The building has seen consistent upkeep of its exterior elements, including a 2018 project that addressed rear siding, windows, sliding doors, and roof shingles, as well as electrical system upgrades such as a 200-amp service replacement in 2019.

The property has a history of addressing safety and maintenance issues, with a routine safety inspection in 2015 and various improvements to enhance security and functionality. Noteworthy improvements include the installation of motion sensor lights in 2014 and the legalization of a rear deck and staircase. The building faced multiple violations in 2001 that were subsequently abated, including issues with fire safety, security requirements, and sanitation, though these concerns were resolved within three months. Recent 311 calls from 2023 primarily relate to street maintenance and encampment cleanup, indicating external neighborhood challenges that are not directly related to the building's condition or management. The property has experienced two minor fire-related incidents, one involving a chimney flue fire and another related to electrical wiring, but neither resulted in civilian injuries.

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

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Risk rating

How 3621-3623 26Th 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
69th percentile

Out of 2380 buildings in this neighborhood, 738 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
75%
No DBI
violation
25%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

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 58.1%
Moderate concern 21.2%
Severe concern 20.8%
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

3621-3623 26Th St event timeline

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

2026
311 Request May 19
Garbage and debris
other bagged boxed contained garbage
311 RequestFeb 26
Garbage and debris

See all 8 events

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

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Every record we have

Full data for 3621-3623 26Th 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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