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493-495 Diamond St

Eureka Valley/Dolores Heights, SF 94114 2769019 2 units · 2 fl · 1917

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 Eureka Valley/Dolores Heights
At or below average
avg 1.3
1
FewerMore

This building has 1 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.3.

Rent & eviction protection

Is 493-495 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 1917
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.

Building characteristics
Units2
Floors2
Year built1917
Total area2,064 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2769019
Ownership

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

Owner name
Warren Rube Iii
Mailing address
493 Diamond St San Francisco CA 94114
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.

493 Diamond St, San Francisco, CA 94114
495 Diamond St, San Francisco, CA 94114
Augrented Insights
Initial analysis

Located in the Eureka Valley/Dolores Heights neighborhood, 493-495 Diamond Street is a two-unit multi-family residential building constructed in 1917, featuring two stories and classified as a flats & duplex property. The building has undergone several significant improvements in recent years, including a completed reroofing project in 2023 costing $24,205 and the installation of a new HVAC system in 2024. More recent permits from 2024 indicate ongoing infrastructure improvements, including ductwork replacement and electrical upgrades for a heat pump system. The property has a notable history of maintenance and upgrades, with previous work including window replacements in 1997 and roof work in 1994, though some earlier permits from the 1990s are listed as expired.

The building has experienced some compliance issues, most prominently an active violation from October 2021 regarding unpermitted work on wood and concrete retaining walls in the rear yard, which are reportedly retaining soil on a slope and showing signs of failure, creating potential safety concerns. This violation remains unresolved as of October 2023. The property has also been the subject of complaints regarding unpermitted construction work, particularly concerning a deck on the south side of the building in December 2022. While these issues suggest some ongoing concerns about unauthorized modifications, the more recent permit activity indicates active management of the property's maintenance needs. The building's surrounding area has experienced typical urban issues as documented through 311 calls, including sidewalk graffiti, parking violations, and occasional debris, though these are external to the building itself and appear to be promptly addressed by city services when reported.

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

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Risk rating

How 493-495 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
32th percentile

Out of 1278 buildings in this neighborhood, 869 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
64%
No DBI
violation
36%
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 complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

Neighborhood location

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 64.6%
Moderate concern 27.2%
Severe concern 8.2%
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

493-495 Diamond St event timeline

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

2026
Plumbing Permit Mar 12
Upgrade and relocate the water lines for the sink and fridge acoording to the approved proposal layout (kitchen remodel)
Complete
Electrical PermitMar 12
Upgrade the electrical wiring in kitchen: 9 lights, 9 switches, 5 receptacle, 1 dishwasher, 1 garbage disposal and 1 microwave. bring up to code.

See all 13 events

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

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Every record we have

Full data for 493-495 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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