Free SF apartment background check

39 Diamond St

Eureka Valley/Dolores Heights, SF 94114 2648032 3 units · 3 fl · 2008

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 Eureka Valley/Dolores Heights
At or below average
avg 1.3
0
FewerMore

This building has 0 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 39 Diamond 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 2008
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH3
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 built2008
Total area5,345 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2648032
Ownership

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

Owner name
Phan Thanh K
Mailing address
1343 21st Ave San Francisco CA 94122
Last sale
061520

Landlord portfolio

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

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Augrented Insights
Initial analysis

39 Diamond Street is a 3-unit residential building constructed in 2008 in the Eureka Valley/Dolores Heights neighborhood. The three-story flats/duplex structure was built following the demolition of a single-family dwelling in an RH-3 district, with comprehensive safety systems including a complete fire sprinkler system and a fire alarm system installed during construction, with revisions made to central monitoring and pull station configurations. The building underwent several infrastructure enhancements, including a $30,000 deck construction project in 2018, and has maintained up-to-date safety systems with a 400-amp service installation and four meters for individual units.

The property has faced some recent neighborhood challenges, with multiple reports of graffiti on public infrastructure in early 2025 and several instances of street cleaning issues documented throughout late 2024, including cases of garbage, debris, and one instance involving a mattress. However, all these issues have been promptly addressed and resolved by city services. The building's construction history is well-documented, with proper permits obtained for all major systems including plumbing (bathrooms, kitchens, water heaters, laundry), gas furnace installation, and electrical systems, establishing a comprehensive record of responsible development practices. The property has undergone no major modifications or safety incidents since its construction, suggesting stable ongoing maintenance of the building systems.

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

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Risk rating

How 39 Diamond 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

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
77th percentile

Out of 1278 buildings in this neighborhood, 294 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

Neighborhood location

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 72.3%
Moderate concern 10.2%
Severe concern 17.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

39 Diamond St apartment reviews

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The story over time

39 Diamond St event timeline

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

2024
311 Request Oct 14
Encampment
Encampment

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 39 Diamond St 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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