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191-193 23Rd Ave

Lake Street, SF 94121 1383017 2 units · 2 fl · 1908

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 Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 191-193 23Rd 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 1908
2 or more units
2 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
Units2
Floors2
Year built1908
Total area2,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1383017
Ownership

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

Owner name
Pak Ping & Tsui Chun Yeung
Mailing address
587 22nd Ave San Francisco CA 94121
Last sale
081803

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.

191 23rd Ave, San Francisco, CA 94121
6100 California St, San Francisco, CA 94121
193 23rd Ave, San Francisco, CA 94121
6102 California St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 191-193 23rd Avenue, located in the Lake The Presidio neighborhood, is a two-unit multi-family residential building constructed in 1908, featuring ground-floor commercial space, and owned by Pak Ping & Tsui Chun Yeung. The building has undergone several significant modifications over its history, with the most substantial work occurring in 2000, when a $220,000 alteration added a unit and off-street parking with a garage. Other notable improvements include a completed reroofing project in 2008 ($3,500), installation of a new trellis in 2001 ($3,500), and an extensive renovation of a dental office with ADA-compliant restroom facilities in 2001 ($50,000). The building experienced ventilation-related issues in 2002-2003, resulting in several notices of violation that were ultimately resolved through the proper installation of exhaust fans.

Recent maintenance and environmental concerns have emerged in 2023-2024, including issues with tree roots lifting sidewalks, damaged property claims regarding trees, and multiple reports of illegal parking in the vicinity. There have also been several municipal service calls regarding street maintenance, signage, and environmental services, though most of these cases have been resolved. Historical complaints from 2001-2002 noted unauthorized use of a rear structure for plumbing supply storage and ventilation deficiencies. The property has been actively maintained over the years, with all major violations being addressed through proper permits and corrections. The most recent building permit from 2014 was issued for street space improvements at minimal cost.

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

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Risk rating

How 191-193 23Rd 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
22th percentile

Out of 660 buildings in this neighborhood, 515 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Permit rate, owner's portfolio

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 60.0%
Moderate concern 32.0%
Severe concern 8.0%
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

191-193 23Rd Ave event timeline

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

2024
311 Request Apr 25
Bulky items
Furniture

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 191-193 23Rd 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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