Free SF apartment background check

4290 25Th St

Noe Valley, SF 94114 6539021 2 units · 2 fl · 1926

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 4290 25Th 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 1926
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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 built1926
Total area3,551 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6539021
Ownership

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

Owner name
Oneill Sean
Mailing address
949 Diamond St San Francisco CA 94114
Last sale
092215

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.

949 Diamond St, San Francisco, CA 94114
4290 25th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-story multi-family residential building at 4290 25th Street in Noe Valley, owned by Sean Oneill, was constructed in 1926 and contains two units. The property underwent significant renovations between 2007-2009, including a major $175,000 foundation and seismic upgrade project that involved lowering the basement floor by 12 inches, installing new internal stairs, and renovating the first floor. This was followed by a $32,000 revision in late 2008 that added a retaining wall, modified interior entry stairway, and incorporated a bedroom into the living room on the second floor. The building received comprehensive electrical upgrades in 2008, with complete rewiring including installation of new lighting, switches, receptacles, and a 100-amp sub panel on both floors. Multiple plumbing improvements were completed during this period, including the installation of various fixtures throughout the building, new furnace systems, and three fireplaces.

Since the major renovations, the building's maintenance history has been relatively quiet, with the most recent significant work being a new roof installed in 1988. The property has experienced typical urban challenges in recent years, as evidenced by 311 calls regarding street cleaning, parking enforcement, and garbage removal between 2022-2024, though these issues appear to be external to the building itself. A rear yard variance was approved for the property, allowing for the construction of two new decks and a staircase to serve as a second means of egress, indicating attention to safety improvements. The most recent building-related activities on record were street space permits issued in 2009, suggesting limited recent structural modifications. There have been no reported safety incidents or building code violations on record, and all major systems (electrical, plumbing, HVAC) were substantially upgraded during the 2007-2009 renovation period.

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

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Risk rating

How 4290 25Th 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
65th percentile

Out of 1879 buildings in this neighborhood, 658 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Neighborhood (ZIP code)

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 57.5%
Moderate concern 17.3%
Severe concern 25.3%
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

4290 25Th St event timeline

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

2025
311 Request Jan 20
Blocking driveway cite tow
Parking Enforcement

See all 2 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4290 25Th St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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