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43-45 Diamond St

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

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 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.

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 1914
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 built1914
Total area3,040 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2648031
Ownership

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

Mailing address
1343 21st Ave San Francisco CA 94122
Last sale
November 26, 2002

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.

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

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
92ndpercentile

Out of 1278 buildings in this neighborhood, 102 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
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 risk forecast
Low failure risk 9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

43-45 Diamond St 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
311 Request Jun 29
Garbage and debris
other loose garbage debris yard waste
Building PermitMar 25
Addressing permit only: add 45a diamond st to apn 26481031. reference adu permit 202311090573

See all 10 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.

Side by side

How 43-45 Diamond 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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