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148 18Th Ave

Lake Street, SF 94121 1377033 3 units · 3 fl · 1989

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 148 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 1989
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors3
Year built1989
Total area3,925 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1377033
Ownership

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

Owner name
Edwin W & Patricia W Lum 20
Mailing address
Lum Edwin Wing & Patricia W 148 18Th Ave San Francisco CA 94121
Last sale
092303

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit, three-story multi-family residential building at 148 18th Avenue in the Lake-Presidio neighborhood, owned by Edwin W & Patricia W Lum 20, was constructed in 1989 and has undergone several significant renovations and maintenance work over the years. Most recently, in November 2023, Unit 101 completed a substantial $60,000 renovation including kitchen and bathroom updates with new cabinets, countertops, lighting, and fixtures, with associated plumbing and electrical permits issued in February 2024. This followed a previous renovation in 2014 of Unit 201 which included kitchen cabinet replacement and rewiring. The building has maintained its infrastructure through various major works, including reroofing projects in 2013 and 1988, and horizontal additions completed in 1996. Notably, there was an incident involving a carbon monoxide detector activation with no actual CO detected, though the specific date of this event is not recorded.

The property has experienced recurring driveway blocking issues throughout 2023, with multiple parking enforcement calls initiated between May and November 2023; however, in most cases, responding officers were either unable to locate the offending vehicles or the situations were subsequently addressed through citations. The building's historical records show consistent maintenance and improvements, with the most recent substantial renovations focusing on modernizing units' kitchens and bathrooms. While the driveway blocking incidents could potentially impact resident access, these are external issues primarily affecting street access to the property.

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

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Risk rating

How 148 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
92th percentile

Out of 660 buildings in this neighborhood, 53 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
91%
No DBI
violation
9%
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.

Owner's portfolio size

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

Building permits, owner's portfolio

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

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

12-Month severity forecast
No violation 86.7%
Moderate concern 10.4%
Severe concern 2.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

148 18Th Ave apartment reviews

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The story over time

148 18Th Ave event timeline

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

2024
Plumbing Permit Feb 09
Work category: 2pa; remodel kitchen and bathroom
Complete
Electrical PermitFeb 09
#201: kitchen and bathroom remodel.

See all 3 events

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

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Every record we have

Full data for 148 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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