Free SF apartment background check

43-45 Diamond St

Eureka Valley/Dolores Heights, SF 94114 2648031 2 units · 2 fl · 1914

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 43-45 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 1914
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.

Building characteristics
Units2
Floors2
Year built1914
Total area3,040 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2648031
Ownership

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

Owner name
Thanh K Phan Revocable Lvg
Mailing address
1343 21st Ave San Francisco CA 94122
Last sale
030519

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.

45 Diamond St, San Francisco, CA 94114
43 Diamond St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The property at 43-45 Diamond Street is a two-unit multi-family residential building located in the Eureka Valley/Dolores Heights neighborhood. Built in 1914, this two-story flats and duplex structure is currently undergoing significant improvements, with recent permits issued in November 2023 for converting an existing family room and bedroom into a new ADU on the first floor, including the addition of a kitchen and conversion of a half bath to a full bathroom, at a cost of approximately $49,000. This project is proceeding concurrently with plumbing and electrical work in late 2024, including the installation of a tankless water heater, a new shower and kitchen facilities, and associated electrical components.

The building has undergone several substantial improvements over the years, including the installation of an elevator in 2019, which included electrical work completed in April 2019. Previous maintenance issues were addressed through repairs to a dry rotted deck in 2018, following a 2017 permit for both elevator and deck construction. Historical permits from 2003 show completed work on basement remodeling and kitchen renovations. The property has experienced some urban maintenance challenges, with multiple 311 calls in 2023-2024 related to street cleaning issues, including reports of waste and garbage. Parking enforcement has been required on several occasions in 2023 for vehicles blocking driveways or parking on sidewalks. While there have been some quality of life issues reported via 311 calls, such as graffiti (2022) and instances of waste that required attention (2019-2024), these have generally been resolved through appropriate city services. The building's recent and ongoing improvements suggest active maintenance and modernization efforts by the current owner, Thanh K Phan Revocable Lvg.

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

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Risk rating

How 43-45 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
93th percentile

Out of 1278 buildings in this neighborhood, 89 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.

Neighborhood location

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

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 74.6%
Moderate concern 15.3%
Severe concern 10.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

43-45 Diamond St event timeline

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

2026
Building Permit Mar 25
Addressing permit only: add 45a diamond st to apn 26481031. reference adu permit 202311090573
$1 · Issued
Building PermitJan 05
To obtain final inspection for work approve under pa 202311090573. all work is complete.

See all 9 events

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

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Every record we have

Full data for 43-45 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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