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745 21St Ave

Central Richmond, SF 94121 1664008 4 units · 2 fl · 1926

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 Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 745 21St Ave 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 1926
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units4
Floors2
Year built1926
Total area4,482 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1664008
Ownership

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

Owner name
Nagano-Wong Revocable Trust
Mailing address
Roy Wong & Vicki Nagano, Tt 4207 Dogwood Pl Davis CA 95618
Last sale
062315

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 745 21st Avenue in the Central Richmond neighborhood, owned by the Nagano-wong Revocable Trust, has undergone several significant improvements and faced various challenges since its construction in 1926. The most substantial recent work was completed in 2014, involving a comprehensive renovation of Unit #1 that included kitchen and bathroom remodeling, electrical upgrades (installation of lights, switches, receptacles, fans, smoke detectors), and plumbing modifications. The building received important infrastructure updates, including a street-level alley electrical service replacement (225 amp) in 2014 and a backflow device replacement for the steam boiler system in 2018. A significant maintenance milestone was achieved in 2001 with a complete reroofing project costing $9,900.

The building had a cluster of fire safety violations in February 2002, which were promptly addressed and abated by March 2002. These violations included issues with fire proofing materials, combustible storage, smoke detector requirements, and gas utility shutoff tools. The property's recent history (2019-2023) has been comparatively uneventful in terms of building-specific issues, though there have been multiple noise complaints and parking-related incidents in the vicinity, as documented in 311 calls. The most recent building-related interaction was a noise complaint in December 2023, which authorities directed to SFPD for handling. The property has maintained compliance with building codes since the resolution of the 2002 violations, with no active violations or complaints on record as of October 2023.

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

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Risk rating

How 745 21St Ave'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
31th percentile

Out of 2250 buildings in this neighborhood, 1552 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
79%
No DBI
violation
21%
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.

Estimated permit spend (past 7 years)

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

Neighborhood location

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

12-Month severity forecast
No violation 62.9%
Moderate concern 18.0%
Severe concern 19.2%
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

745 21St Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 745 21St Ave 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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