Free SF apartment background check

228 Diamond St

Eureka Valley/Dolores Heights, SF 94114 2698004 9 units · 3 fl · 1964

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Eureka Valley/Dolores Heights
Above average
avg 1.3
4
FewerMore

This building has 4 novs (7y), above the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 228 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 1964
2 or more units
9 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
Units9
Floors3
Year built1964
Total area7,848 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2698004
Ownership

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

Owner name
Thomas & Amy Mecham Family
Mailing address
Mecham Thomas R & Amy L Tru Po Box 1693 Bethel Island CA 94511
Last sale
012913

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The 9-unit, 3-story multi-family residential building at 228 Diamond St, owned by the Thomas & Amy Mecham Family, has undergone several significant safety upgrades since its construction in 1964. Most recently, in October 2024, the building completed a fire alarm system upgrade to comply with current fire code requirements, including the installation of low frequency sounders in sleeping areas and upgrading the fire panel. The building has previously addressed critical safety concerns, including completing a mandatory soft-story retrofit in 2017 (Tier 4) and undergoing main service electrical upgrades in 2023. Historical maintenance records show attention to basic infrastructure, with reroofing work completed in both 1999 and 2020, and termite repairs addressed in 1995.

The building has experienced periodic building and fire code violations, though all noted violations have been addressed and abated. A cluster of fire safety violations was recorded in 2002-2003, concerning issues such as fire escape obstructions, alarm panel certification, and combustible storage, all of which were resolved. More recently, a fire safety violation regarding exit maintenance was issued in July 2023, which was abated by November 2023. The property has maintained regular communication with city services for general maintenance issues, as evidenced by multiple 311 calls between 2010 and 2024, primarily related to street cleaning, graffiti removal, and tree maintenance. While there was one notable complaint in 1994 regarding elevator service affecting a disabled resident, this was resolved by 1995, and no similar accessibility issues have been reported since.

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

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Risk rating

How 228 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
8th percentile

Out of 1278 buildings in this neighborhood, 1176 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
38%
No DBI
violation
62%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 28.1%
Moderate concern 51.6%
Severe concern 20.3%
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

228 Diamond St event timeline

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

2026
Plumbing Permit Jun 10
Work category: 1p; laundry service, dryer gas service
Issued
Building PermitMay 20
To obtain final inspection for work approved under pa# 202410032250. all work is complete.

See all 16 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 228 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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