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814-818 Diamond St

Noe Valley, SF 94114 6505003 2 units · 2 fl · 1900

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 Noe Valley — not a forecast
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 814-818 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
24NOE
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 1900
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 built1900
Total area2,700 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6505003
Ownership

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

Mailing address
C/o William P & Carol S Yen 681 Alvarado St San Francisco CA 94114
Last sale
August 20, 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.

816 Diamond St, San Francisco, CA 94114
818 Diamond St, San Francisco, CA 94114
814 Diamond St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 814-818 Diamond Street in Noe Valley, owned by Yenne Marital Trust The, is a 2-story structure built in 1900 that includes both flat and retail space. The property has undergone several significant maintenance and improvement projects over the past decade, with particular attention to safety and structural integrity. Notable repairs include dry rot remediation below a roof drain pipe in 2014, back stairs repairs in 2013, and a window replacement project in 2013 involving 11 windows, including fiberglass windows visible from the street. In 2011, the ground floor underwent a change of use from retail to an activity center and preschool, during which a fire alarm system was installed, though there were some related permit cancellations. The building's historical permit records also show modifications made in 1999, including the installation of non-bearing partitions and an office awning.

Recent activity at the property primarily consists of external maintenance issues rather than internal building concerns. Between 2021 and 2024, there have been multiple reports of abandoned vehicles in the vicinity, all of which were resolved by city agencies, though these incidents occurred outside the building itself. There have also been two instances of loose garbage requiring cleanup in 2022, and one missed mechanical street sweeping in August 2023. A notable interaction with the Rent Board occurred in October 2023 regarding the property's fee housing inventory assessment. While the series of abandoned vehicle reports and street cleaning issues are worth noting, they reflect broader neighborhood conditions rather than specific building issues.

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

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Risk rating

How 814-818 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
47thpercentile

Out of 1879 buildings in this neighborhood, 996 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
76%
No DBI
violation
24%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

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 risk forecast
Low failure risk 24%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

814-818 Diamond St apartment reviews

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The story over time

814-818 Diamond St event timeline

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

2025
311 Request Aug 24
Blocked parking space or strip
construction equipment
311 RequestJul 22
Abandoned vehicle

See all 5 events

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

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Every record we have

Full data for 814-818 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 814-818 Diamond St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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