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4375-4377 24Th St

Noe Valley, SF 94114 6503028A 2 units · 2 fl · 1941

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 4375-4377 24Th 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 1941
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 built1941
Total area2,436 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6503028A
Ownership

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

Owner name
Fontana Sergio & Angela
Mailing address
Fabiano Fontana 2305 Walden Square San Jose CA 95124
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.

4377 24th St, San Francisco, CA 94114
4375 24th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

This 1941 Noe Valley duplex, owned by Sergio & Angela Fontana, has undergone several significant improvements and faced various challenges over recent years. Most notably, the building has experienced persistent maintenance issues, with a recent July 2024 complaint highlighting concerns about inadequate insulation leading to noise disturbances between units. Previous violations from 2018 included multiple safety and maintenance concerns that were subsequently addressed, such as plumbing issues, electrical code violations, and concerns about mold in the bathroom. The property has seen regular upgrades, including a complete reroofing in 2020 (cost: $20,400), window replacements in 2019, and HVAC improvements with two furnace replacements and water heater installations. Security enhancements were implemented in 2018 with the installation of security cameras, though these initially triggered compliance issues due to lack of proper electrical permits. The building's systems have been more recently updated, including new washer and dryer installations in 2020, though the property continues to show some age-related wear with reports of cracked tiles, peeling paint, and various maintenance needs being reported through the years.

The duplex has a documented history of addressing both routine maintenance and more significant upgrades, including various plumbing improvements (notably a sewer line replacement in 2012), electrical corrections completed in 2018, and multiple building code compliance updates. While many past violations have been resolved, as evidenced by their "not active" status, the most recent tenant complaint regarding noise insulation from July 2024 suggests ongoing concerns about building envelope performance. The property has experienced multiple parking-related issues in the surrounding area, as documented in 311 calls, though these are unrelated to the building's internal conditions. Overall, the duplex has received regular maintenance and improvements over the years, with particular attention to compliance issues following the 2018 violations, though some building systems still show age-related characteristics typical of a structure built in 1941.

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

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Risk rating

How 4375-4377 24Th 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
97th percentile

Out of 1879 buildings in this neighborhood, 56 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
94%
No DBI
violation
6%
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 location

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

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

12-Month severity forecast
No violation 84.1%
Moderate concern 12.2%
Severe concern 3.7%
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

4375-4377 24Th St event timeline

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

2024
DBI Complaint Jul 22
Date last observed: 12-jul-24; time last observed: 3:00pm; identity of person performing the work: none; floor: 1st and 2n; unit: 4375; exact location: main bldg; building type: residence/dwelling structural problems; other housing; ; additional information: the building lacks insulation, leading to a lack of quiet enjoyment. we hear every sound from our neighbors—conversations, tv/music, and footsteps. the leasing agent assured us it was a quiet building, but these issues have persisted since the current tenants moved in last year which the leasing agent lied to us and said this was a quiet building and we would not hear our neighbor above us. despite notifying the landlord and property management team, no action has been taken. apart from an inspection and they have remained unresponsive to our follow up emails.;
Housing Inspection Services

See all 5 events

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

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Every record we have

Full data for 4375-4377 24Th St apartments

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

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