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534-536 Diamond St

Noe Valley, SF 94114 2772008 2 units · 1 fl · 1983

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 534-536 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 1983
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors1
Year built1983
Total area2,100 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2772008
Ownership

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

Owner name
Hornibrook Carol A
Mailing address
1480 Noe St San Francisco CA 94131
Last sale
000000

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.

536 Diamond St, San Francisco, CA 94114
534 Diamond St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit residential building at 534-536 Diamond Street in Noe Valley, owned by Carol A Hornibrook, is a one-story structure built in 1983. The property has undergone several significant maintenance and improvement projects over the years, with the most recent being a roofing project completed in 2021 at a cost of $7,800. In 2011, the building received substantial upgrades including the installation of new gas lines and a tankless water heater, as well as an electrical service upgrade to 200 amps with new meter boxes and sub-panels for each unit. Earlier structural work includes foundation raising (1999), dry rot repairs (1999), and termite damage remediation (1993). The property's historical documents confirm its established two-unit residential use dating back to 1965.

The building has experienced some infrastructure challenges, particularly in 2014 when there were two documented sewage backup incidents through a 4-inch vent, though these were subsequently resolved. More recent concerns include tree root damage to the sidewalk reported in 2023 (currently open) and a parking enforcement request in 2024 (currently open). The property's maintenance history indicates regular attention to structural issues, with no recent major safety concerns or violations on record. A pattern of garbage receptacle management issues was noted between 2012 and 2017, though these appear to have been addressed through enforcement actions. Several 311 calls throughout the years have related to external factors such as street trees, parking issues, and abandoned vehicles, none of which directly impacted the building's structural integrity or habitability.

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

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Risk rating

How 534-536 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
62th percentile

Out of 1879 buildings in this neighborhood, 714 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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.

Estimated permit spend (past 7 years)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 82.3%
Moderate concern 12.0%
Severe concern 5.7%
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

534-536 Diamond St event timeline

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

2026
311 Request Mar 13
Abandoned vehicle
Parking Enforcement

See all 5 events

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

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Every record we have

Full data for 534-536 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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