Free SF apartment background check

3634-3650 23Rd St

Noe Valley, SF 94110 3632014 9 units · 3 fl · 1910

This building has significantly more problems than most nearby buildings. 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 3634-3650 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 1910
2 or more units
9 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
Units9
Floors3
Year built1910
Total area10,905 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3632014
Ownership

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

Owner name
Whelan Family Ptnrs
Mailing address
Mr James J Whelan 1353 Ulloa St San Francisco CA 94116
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.

3646 23rd St, San Francisco, CA 94110
3638 23rd St, San Francisco, CA 94110
3650 23rd St, San Francisco, CA 94110
3634 23rd St, San Francisco, CA 94110
3648 23rd St, San Francisco, CA 94110
3640 23rd St, San Francisco, CA 94110
3636 23rd St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story, nine-unit multi-family residential building at 3634-3650 23rd Street in Noe Valley, owned by Whelan Family Ptnrs, has a documented history spanning several decades. Built in 1910, this flat & store building experienced significant fire damage in 1988, which required comprehensive repairs including window, sheetrock, and door replacements, all of which were completed. More recent structural concerns have primarily focused on the rear stairs, with documented repairs in 1988 and 2007, the latter addressing a specific violation requiring the replacement of a post. A notable building issue emerged in 2010 regarding an unauthorized deck construction by tenants at 3628 23rd Street, though this was eventually resolved by 2012.

The building underwent a thorough inspection process in 2001, which revealed multiple violations that were subsequently addressed by June 2001, including sanitation issues, stair repairs, security upgrades, and gas utility requirements. More recent improvements include the installation of a new 100-amp electrical service in 2009. The property has experienced recurring issues with garbage management, as evidenced by multiple 311 calls in late 2024 regarding debris and waste outside the building. Between November 2024 and January 2025, there were several reports of illegal parking and garbage concerns, though most were either resolved or officers were unable to locate the reported issues. A single hazardous condition incident was recorded on the property with no civilian injuries noted, though no specific date was provided for this event.

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

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Risk rating

How 3634-3650 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
20th percentile

Out of 1879 buildings in this neighborhood, 1503 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
58%
No DBI
violation
42%
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.

Building size

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

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 36.2%
Moderate concern 26.6%
Severe concern 37.2%
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

3634-3650 23Rd St event timeline

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

2026
311 Request May 25
Garbage and debris
human waste or urine
311 RequestMay 02
Parking on sidewalk

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3634-3650 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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