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1509 25Th Ave

Central Sunset, SF 94122 1871001A 2 units · 2 fl · 1939

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 Central Sunset
Above average
avg 0.7
6
FewerMore

This building has 6 novs (7y), above the Central Sunset average of 0.7.

Rent & eviction protection

Is 1509 25Th Ave 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 1939
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 built1939
Total area2,128 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1871001A
Ownership

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

Owner name
Chiu, Louisa
Mailing address
30 Montair Pl Danville CA 94526
Last sale
081400

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 1509 25th Avenue in San Francisco's Central Sunset neighborhood is a two-unit, two-story multi-family residential building constructed in 1939, currently owned by Louisa Chiu. The building has undergone several recent improvements, most notably a series of door replacements in 2024, including a front entry door and a side entry door, both converted from wood to steel construction, with costs exceeding $5,500 each. A significant maintenance issue was addressed earlier this year, when the property was cited for various interior surface violations related to lead paint hazards in March 2023, including problems with peeling paint and interior wall conditions; these violations were successfully abated by September 2023. The building's maintenance history includes termite repairs conducted in 1986 and a gas house line extension project from 2018, though the latter permit has since expired.

The street and surrounding area have experienced multiple parking-related incidents in recent years, with several 311 calls regarding abandoned vehicles and parking violations between 2019 and 2024, though these are not directly related to the building's condition. There were also two pavement defect reports filed and resolved in 2023 near the property. The recent door upgrades and prompt resolution of lead-related violations suggest active property management, though the building's age necessitates ongoing maintenance attention.

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

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Risk rating

How 1509 25Th Ave'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
32th percentile

Out of 814 buildings in this neighborhood, 554 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
80%
No DBI
violation
20%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

DBI tenant complaints (past 7 years)

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

Notices of Violation (past 7 years)

DBI issued Notices of Violation at this address over the last 7 years — a direct record of code enforcement activity.

12-Month severity forecast
No violation 61.0%
Moderate concern 24.5%
Severe concern 14.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1509 25Th Ave apartment reviews

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The story over time

1509 25Th Ave event timeline

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

2024
Building Permit Jun 24
Replace 1 front entry door. street visible. existing wood. new steel. no size change.
$5,597 · Complete
Building PermitFeb 08
Replace (1) side entry door non-street visible (e) wood, (n) steel, no size change

See all 9 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1509 25Th Ave 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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