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3981-3983 18Th St

Eureka Valley/Dolores Heights, SF 94114 3584078 2 units · 2 fl · 1900

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Eureka Valley/Dolores Heights — not a forecast
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.4.

Rent & eviction protection

Is 3981-3983 18Th 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1900
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors2
Year built1900
Total area2,790 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3584078
Ownership

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

Mailing address
Thomas A Lucas, Trustee 3981 18Th St San Francisco CA 94114
Last sale
December 14, 2001

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

3983 18th St, San Francisco, CA 94114
3981 18th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The property at 3981-3983 18th Street is a two-unit, two-story multi-family residential building constructed in 1900, currently owned by the Thomas A Lucas 2007 Revocable Trust. The building has undergone several significant renovations and improvements over the past two decades, with the most recent substantial work occurring in 2022, including a bathroom remodel, installation of a solar power system (9.36 kW), and electrical panel upgrades across three floors. Previous major improvements include a comprehensive bathroom remodel and steam shower installation in 2011, reroofing in 2010, and significant deck and kitchen remodeling work in 2002. The property has also received various infrastructure upgrades, including plumbing work for the solar installation in 2022 and electrical system improvements in 2011, demonstrating consistent maintenance and modernization efforts by the ownership.

Recent activities around the property have primarily involved street-level maintenance issues, with multiple reports of graffiti and some incidents requiring street cleaning services between 2022 and 2024. Notably, there are two open maintenance issues reported in late 2023-2024: a Muni overhead lines complaint and a graffiti incident. The building's maintenance record shows regular upkeep of essential systems, though the 2007 permit for footing and slab replacement in the lower unit is listed as expired. The property's planning records indicate successful approvals for replacing and expanding a noncomplying rear deck, suggesting adherence to local building regulations for major modifications.

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

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Risk rating

How 3981-3983 18Th 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
83rdpercentile

Out of 1278 buildings in this neighborhood, 217 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building age

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

Neighborhood location

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

12-Month risk forecast
Low failure risk 13%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3981-3983 18Th St apartment reviews

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On the map

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The story over time

3981-3983 18Th St event timeline

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

2022
Plumbing Permit Dec 13
Work category: 2pa; bathroom remodel
Complete
Electrical PermitDec 02
Bathroom remodel

See all 5 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3981-3983 18Th St apartments

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

Side by side

How 3981-3983 18Th St compares to the neighborhood

This building against comparable properties in Eureka Valley/Dolores Heights. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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