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4131-4133 Balboa St

Outer Richmond, SF 94121 1602036 2 units · 2 fl · 1947

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 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 4131-4133 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 1947
2 or more units
2 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
Units2
Floors2
Year built1947
Total area2,050 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1602036
Ownership

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

Owner name
Shiro Michael M
Mailing address
4133 Balboa St San Francisco CA 94121
Last sale
050500

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.

4131 Balboa St, San Francisco, CA 94121
4133 Balboa St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-family residential building at 4131 Balboa Street in San Francisco's Outer Richmond neighborhood is a two-story flats & duplex structure built in 1947, currently owned by Michael M. Shiro. The property has undergone several significant modifications in recent years, with the most substantial work occurring between 2023 and 2024. Currently in process is the removal and replacement of rear decks for both 4131 and 4133 Balboa Street, for which permits have been issued with a cost of approximately $38,450. In late 2024, the property successfully completed the demolition of an existing rear yard storage room, which was previously subject to legalization attempts in late 2023. The building has also undergone several necessary code compliance updates, including electrical system improvements, plumbing corrections (such as laundry drain modifications and gas pipe strapping), and safety features installation as mandated by a physical inspection report (CC-8619) in 2023-2024.

Earlier improvements to the property include a complete reroofing in 2017, window replacements throughout the building, and various maintenance updates. The building's maintenance history shows attention to both aesthetic and safety concerns, with recent work focusing on compliance with current building codes and requirements. A notable historical issue from 1995 regarding a potentially unstable dirt wall between properties was quickly addressed within three days. The property has had occasional parking-related complaints (two driveway blocking incidents in 2022) and one instance of sidewalk graffiti (2012), though these are not directly related to the building's condition or safety. The most recent significant building improvements, including deck replacement and storage room modifications, suggest ongoing investment in the property's infrastructure and compliance with current regulations.

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

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Risk rating

How 4131-4133 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
81th percentile

Out of 1040 buildings in this neighborhood, 198 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

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 severity forecast
No violation 87.5%
Moderate concern 10.0%
Severe concern 2.5%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

4131-4133 Balboa St event timeline

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

2024
Building Permit Dec 18
Remove (e) rear deck and stair and build (n) deck at both 4131 and 4133 balboa st
$38,450 · Complete
Planning RecordDec 18
Approved - new decks (private open space) for two dwelling units - within the RH-2 125 square feet pere unit - the proposal is 9 X 18 feet - 153 square feet Notice is not required for said scope of work.

See all 11 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4131-4133 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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