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4241-4243 23Rd St

Noe Valley, SF 94114 2805042 2 units · 3 fl · 1904

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 4241-4243 23Rd 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 1904
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
Floors3
Year built1904
Total area2,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2805042
Ownership

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

Owner name
Dowd Edward Thomas & Brenda
Mailing address
4241 23rd St San Francisco CA 94114
Last sale
041917

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.

4241 23rd St, San Francisco, CA 94114
4243 23rd St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The property at 4241-4243 23rd Street is a three-story, multi-family residential building constructed in 1904 in Noe Valley, currently owned by Thomas and Brenda Dowd. The two-unit building has undergone several significant renovations over the past two decades, with the most substantial work occurring between 2014-2015, when the garage level was transformed into a legal studio apartment with kitchen facilities, followed by electrical and plumbing upgrades including a new gas furnace installation. This recent conversion addressed previous concerns from 1997 when the property faced illegal unit complaints regarding an unpermitted garage apartment. Other notable improvements include a 2004 kitchen modernization project and some dry rot repairs in 2002.

Recent activity around the property has primarily involved maintenance and parking issues, with multiple reports of driveway blocking between 2021-2024, though most of these cases were resolved without official action. Infrastructure maintenance has been addressed through various 311 calls, including a damaged tree report in September 2023 and graffiti incidents in 2022 and 2024. The most recent building-related permit activity includes a graffiti removal request in October 2024 and a parking violation report in January 2024. The property's conversion to a two-unit dwelling appears to have been completed in compliance with applicable codes, as indicated by the planning records, with street tree requirements waived under specific circumstances.

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

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Risk rating

How 4241-4243 23Rd 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
72th percentile

Out of 1879 buildings in this neighborhood, 526 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

Building size

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

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 77.9%
Moderate concern 12.9%
Severe concern 9.2%
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

4241-4243 23Rd St 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 4241-4243 23Rd 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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