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3420-3430 26Th St

Inner Mission, SF 94110 6529012B 6 units · 3 fl · 1907

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
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 3420-3430 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 1907
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1907
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units6
Floors3
Year built1907
Total area6,300 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6529012B
Ownership

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

Mailing address
Po Box 460322 San Francisco CA 94146
Last sale
021221

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.

3422 26th St, San Francisco, CA 94110
3428 26th St, San Francisco, CA 94110
3420 26th St, San Francisco, CA 94110
3424 26th St, San Francisco, CA 94110
3426 26th St, San Francisco, CA 94110
483 Bartlett St, San Francisco, CA 94110
3430 26th St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The 6-unit residential building at 3420-3430 26th Street in San Francisco's Inner Mission neighborhood is a three-story flats structure built in 1907 currently owned by 3420-3430 26th Street LLC. The property has undergone several significant modifications and faced multiple maintenance challenges over the years. Most recently, in 2023, two new furnaces and associated plumbing work were installed, and an accessory dwelling unit (ADU) was created in 2022 with proper electrical installations. In 2018, important fire safety improvements were initiated with plans to upgrade the rear building wall to a one-hour fire rating. The building has experienced recurring pest issues, with the most recent complaint in 2023 reporting non-functional laundry facilities and mouse problems, echoing similar complaints from 2017. Past violations from 2004 and 2011 highlighted various safety concerns, including the need for smoke detectors, fire safety equipment, and ceiling fan repairs, all of which were eventually abated.

The property's maintenance history shows attention to infrastructure improvements, including a new bathroom and kitchen plumbing installation in 2020, and a 4-inch main sewer line upgrade. Various historical permits show past work such as reroofing (1998), stair repairs (1990), and window replacements (1988). Recent inspections have revealed ongoing exterior maintenance needs, as evidenced by multiple 311 calls in late 2024 regarding sidewalk debris and cleaning issues, though these appear to be related to public space rather than direct building maintenance problems. A notable building inspection in 2014 documented multiple interior issues including flooding, non-operational smoke detectors, and drainage problems, suggesting periodic challenges with building systems and maintenance responsiveness.

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

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Risk rating

How 3420-3430 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
20th percentile

Out of 2380 buildings in this neighborhood, 1904 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
42%
No DBI
violation
58%
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.

Building size

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

Number of units

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 45.7%
Moderate concern 35.4%
Severe concern 18.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3420-3430 26Th St apartment reviews

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The story over time

3420-3430 26Th St event timeline

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

2025
311 Request Dec 02
Garbage and debris
human waste or urine
311 RequestJul 25
Garbage and debris

See all 12 events

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

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Every record we have

Full data for 3420-3430 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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