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179-181 9Th Ave

Lake Street, SF 94118 1369010 2 units · 2 fl · 1924

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 179-181 9Th 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 1924
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 built1924
Total area4,008 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1369010
Ownership

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

Owner name
Matsui Elaine
Mailing address
181 9th Ave San Francisco CA 94118
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.

181 09th Ave, San Francisco, CA 94118
179 09th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

Located in the Lake-Presidio neighborhood, this two-unit residential building at 179-181 9th Avenue is a two-story flats and duplex structure constructed in 1924 and currently owned by Elaine Matsui. The building has undergone several significant maintenance and improvement projects over the past 20 years, including a $42,925 vinyl siding installation in 2015 and street space work in the same year, following a cluster of building violations filed in April 2015 related to lead paint hazards and weatherproofing issues, which were subsequently abated by September 2015. Earlier maintenance work included the demolition of shower enclosures in 2003, though there was an investigation that year regarding an illegal basement unit.

The most pressing current issue involves a heating problem reported in October 2023, where tenants have experienced persistent cold conditions in one unit despite using portable heaters, with concerns about electrical wiring safety. The building's maintenance history also shows some concerning patterns, including two reports of rodent/insect infestation in 2012-2013, and an incident of falling siding reported in 2015. The property has experienced several parking-related issues nearby, as documented in 2020, though these are external to the building itself. Most recently, a tenant buyout of $18,000 was processed for 181 9th Avenue in January 2024, suggesting potential changes in occupancy status, though this may not directly affect the remaining unit's conditions.

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

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Risk rating

How 179-181 9Th 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
29th percentile

Out of 660 buildings in this neighborhood, 469 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.

Building size

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

DBI tenant complaints (past 7 years)

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

Permit rate, owner's portfolio

Per-building permit rate across the owner's portfolio.

12-Month severity forecast
No violation 62.4%
Moderate concern 27.3%
Severe concern 10.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

179-181 9Th Ave event timeline

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

2024
Tenant Buyout Jan 16
Tenant buyout · $18,000
1 tenant(s)

See all 2 events

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

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Every record we have

Full data for 179-181 9Th 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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