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1 18Th Ave

Lake Street, SF 94121 1340001 2 units · 3 fl · 1912

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 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 1 18Th 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 1912
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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
Floors3
Year built1912
Total area5,083 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1340001
Ownership

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

Owner name
Rosetti Family Rev Interv T
Mailing address
William J & Madeleen M Rose 1 18Th Ave San Francisco CA 94121
Last sale
100314

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.

1 18th Ave, San Francisco, CA 94121
1 A 18th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The 2-unit multi-family residential building at 1 18th Ave, built in 1912, has undergone substantial improvements over the past two decades. Most recently, in September 2023, the property was upgraded with a solar PV system and two Tesla Powerwall batteries, marking the building's transition to sustainable energy. Significant structural and safety improvements have been implemented, including a foundation upgrade with drilled piers and shear walls in 2012 (cost: $95,000), complete window retrofitting in 2012 ($9,000), and the addition of two dormers to the third floor roof (2018, $100,000). The building has received regular maintenance attention, with a new roof installed in 2012 ($9,900), window updates, and various structural repairs including brick waterproofing work in 2011 ($6,000).

Safety systems have been a priority, with multiple furnace and heating system upgrades, including the installation of six space heaters in 2012 and the replacement of two furnaces. The property has experienced several carbon monoxide detector activations, though none resulted in actual CO presence or civilian injuries. Fire incidents have primarily consisted of false alarms and good intent calls, with one gas leak incident recorded. Recent municipal service requests (2023-2024) have primarily concerned external issues such as abandoned vehicles, tree maintenance, and graffiti, rather than structural or safety concerns with the building itself. The property appears to be well-maintained overall, with regular updates to systems and infrastructure, though prospective tenants should be aware of the building's age and history of occasional safety system activations.

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

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Risk rating

How 1 18Th 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
98th percentile

Out of 660 buildings in this neighborhood, 13 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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 89.4%
Moderate concern 8.2%
Severe concern 2.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1 18Th Ave apartment reviews

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The story over time

1 18Th Ave event timeline

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

2024
Electrical Permit Mar 14
Installation of solar pv and battery energy storage reviewed and approved under permit 202309207009. installing 16 roof mounted solar panels. 6.400kw. + 1 tesla powerwall 2 battery 13.5kwh and 1 tesla powerwall plus battery 13.5kwh.
Complete

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 1 18Th 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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