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4337-4339 18Th St

Eureka Valley/Dolores Heights, SF 94114 2693030 2 units · 2 fl · 1888

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 4337-4339 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 1888
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 1888
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 built1888
Total area2,700 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2693030
Ownership

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

Owner name
Mailing address
Fang Ton-yun Ttee 4339 18Th St San Francisco CA 94114
Last sale
May 28, 1997

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.

4337 18th St, San Francisco, CA 94114
4339 18th St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit residential building at 4337-4339 18th Street in the Eureka Valley/Dolores Heights neighborhood, constructed in 1888, has undergone several significant modifications and faced multiple compliance issues over its history. Recent improvements include the installation of solar panels in 2022, with two separate permits showing a combined system capacity of approximately 10.43 kW. The building has a documented history of unauthorized modifications and compliance issues, particularly in the late 1990s, when there were multiple complaints about illegal unit conversions and construction, including unauthorized attic modifications, third-floor living spaces, and backyard encroachment issues. These complaints led to several permits being issued for compliance work, including the removal of illegal uses in 1999 and the legalization of skylights in 1997.

More recent infrastructure work includes a sewer line housetap installation completed in 2009, and in 1989, a garage door installation was completed. The property has experienced recurring parking-related issues in recent months, with numerous 311 calls (ten in total between October 2024 and January 2025) regarding driveway blocking and sidewalk parking concerns, though enforcement officers were often unable to locate the offending vehicles, with only two documented citations issued. While many historical compliance issues have been resolved through proper permitting, the recent spate of parking violations indicates ongoing challenges in the immediate vicinity. The building's documented history shows a pattern of addressing unauthorized modifications through the proper permitting process, culminating in recent sustainable improvements such as the solar panel installations.

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

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Risk rating

How 4337-4339 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
94thpercentile

Out of 1278 buildings in this neighborhood, 77 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
92%
No DBI
violation
8%
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.

Neighborhood location

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

Neighborhood location

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

Building permits, owner's portfolio

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

12-Month risk forecast
Low failure risk 8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

4337-4339 18Th St apartment reviews

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On the map

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The story over time

4337-4339 18Th St event timeline

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

2026
311 Request Jul 29
Blocking driveway cite only
Parking Enforcement
311 RequestJul 10
Parking on sidewalk

See all 7 events

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

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Every record we have

Full data for 4337-4339 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 4337-4339 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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