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231-235 Diamond St

Eureka Valley/Dolores Heights, SF 94114 2697029 3 units · 2 fl · 1910

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

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
1
FewerMore

This building has 1 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.4.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 231-235 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 1910
2 or more units
3 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 1910
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
Units3
Floors2
Year built1910
Total area2,670 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot2697029
Ownership

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

Owner name
Mailing address
Dougherty Anisa V 1240 7Th Ave Apt 16 San Francisco CA 94122
Last sale
March 10, 2021

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.

235 Diamond St, San Francisco, CA 94114
231 Diamond St, San Francisco, CA 94114
233 Diamond St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The three-unit property at 231-235 Diamond Street, owned by Christopher Sim, is a two-story multi-family residential building constructed in 1910 in the Eureka Valley/Dolores Heights neighborhood. The building has undergone several significant improvements over the past decades, with the most recent being a completed re-roofing project in November 2023 costing $15,000. A major structural upgrade was completed in December 2021, involving a new site retaining wall and voluntary seismic retrofit of the front garage, with a substantial investment of $100,000. Historical records show various maintenance work including concrete repairs in the backyard in 2001, and multiple instances of sheetrock repairs in 1992 and re-roofing work in 1990.

The building has had minimal violations and complaints over the years, with only one notable security violation in 2002 regarding self-closing devices and primary locking mechanisms on exterior doors, which was resolved within two months. A 2022 complaint about unpermitted construction work was filed but has since been marked as not active. The property has undergone routine housing inspections in 1996 and 2002, both of which were resolved. The Planning Department approved a new retaining wall construction within the rear yard, confirming compliance with local regulations and noting no related complaints. A fire-related complaint from 2008 was investigated and found to have no merit. Overall, the building's records indicate regular maintenance and compliance with safety requirements, with no significant ongoing issues noted.

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

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Risk rating

How 231-235 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
20thpercentile

Out of 1278 buildings in this neighborhood, 1022 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
56%
No DBI
violation
44%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Neighborhood location

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

Building age

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

12-Month risk forecast
Moderate failure risk 44%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

231-235 Diamond St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

231-235 Diamond St event timeline

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

2026
Building Permit Jun 17
Lateral plywood strengthening of rear crawl space walls, w/anchor bolts & holdowns. legalize strengthening/repair of rearcrawl space post, girder & 3 internal footings
$18,000 · Filed
Building PermitJan 07
Response to nov 202542952 document (4) deck posts & concrete piers. install lateral bracing @ 1st & 2nd floor deck posts

See all 8 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 231-235 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 231-235 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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