Free SF apartment background check

4021-4025 Balboa St

Outer Richmond, SF 94121 1603049 3 units · 3 fl · 1924

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 4021-4025 Balboa 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 1924
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
NC1
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
Units3
Floors3
Year built1924
Total area2,575 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1603049
Ownership

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

Owner name
Ho Johnny
Mailing address
4025 Balboa St San Francisco CA 94121
Last sale
061918

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.

4021 A Balboa St, San Francisco, CA 94121
4021 Balboa St, San Francisco, CA 94121
4025 Balboa St, San Francisco, CA 94121
4023 Balboa St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 4021-4025 Balboa Street is a three-story multi-family residential building with mixed-use classification, constructed in 1924 and currently owned by Johnny Ho. The building has undergone significant modifications over the past several years, most notably involving the conversion and legalization of dwelling units. In 2018, a first-floor unit was legalized at substantial cost, followed by various permits in 2023-2024 related to the addition of an accessory dwelling unit (ADU) including multiple bedrooms, bathrooms, and living spaces. Recent work has included the installation of a fire sprinkler system (2024) and modifications to skylights and fire parapets (2024), suggesting ongoing improvements to safety systems.

The property has a documented history of compliance issues and unauthorized modifications, most notably during 2006-2007 when there were violations related to the unauthorized conversion of commercial space to residential use, which was subsequently abated. More recent concerns have emerged regarding unauthorized construction work, with complaints filed in late 2023 about work being performed without proper permits and beyond scope, including the conversion of storage space to ADUs. The building's recent renovation history includes multiple permit filings for corrections and modifications, indicating active ongoing development. There have also been several building complaints regarding unauthorized work, illegal change of use, and plumbing installation issues, with some complaints remaining active as of 2023. The property has experienced recurring issues with parking violations and debris, as evidenced by multiple 311 calls for service between 2022 and 2024, primarily related to sidewalk parking violations.

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

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Risk rating

How 4021-4025 Balboa 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
29th percentile

Out of 1040 buildings in this neighborhood, 738 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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 tenant complaints (past 7 years)

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

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 57.8%
Moderate concern 35.8%
Severe concern 6.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

4021-4025 Balboa St apartment reviews

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On the map

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The story over time

4021-4025 Balboa St event timeline

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

2026
Building Permit Jan 28
Installation of overhead fire sprinkler system. adding underground work. referencing fire permit#: 202401234428.
$7,028 · Issued

See all 13 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4021-4025 Balboa St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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