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929-931 Pacific Ave

Nob Hill, SF 94133 0180051 3 units · 3 fl · 1912

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 Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 929-931 Pacific 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 1912
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RC3
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 built1912
Total area4,378 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0180051
Ownership

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

Owner name
Tseng Kenny Kin Sun Amy Y
Mailing address
Tseng Kenny Kin Sun & Amy Y 331 28Th Ave San Francisco CA 94121
Last sale
080200

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.

929 Pacific Ave, San Francisco, CA 94133
931 Pacific Ave, San Francisco, CA 94133
Augrented Insights
Initial analysis

The property at 929-931 Pacific Avenue is a three-story multi-family residential building located in Nob Hill, consisting of three units and built in 1912. The building underwent significant recent improvements, with completed kitchen and electrical renovations in late 2023 valued at $35,000, including new cabinets, sub-panel installation, and plumbing work for hot/cold water and gas lines. The property has a documented history of maintenance and violations that were addressed, most notably a major issue in 2006-2007 regarding unpermitted basement conversions that resulted in multiple safety and code violations including inadequate ventilation, missing smoke detectors, and unauthorized electrical and plumbing work. These violations were resolved through several permits in 2007, including kitchen renovations, bathroom reconfigurations, and installation of safety features like smoke detectors.

The building's maintenance history shows regular attention to infrastructure, including a roof replacement in 1991, rear stair repairs in 1999, and various modernization efforts in 2007 including bathroom upgrades and HVAC improvements. Recent inspections and improvements suggest active management of the property, with particular attention to electrical systems demonstrated by multiple recent permits for electrical work. The area around the building has experienced recurring issues with waste management, as evidenced by numerous 311 calls regarding garbage and debris between 2019 and 2024, though these are external to the building itself and have been consistently addressed through city services. While the building had several routine inspections and violations in the past, these appear to have been addressed through proper permits and corrections, with no active violations on record as of 2023 and 2024.

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

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Risk rating

How 929-931 Pacific 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
74th percentile

Out of 1125 buildings in this neighborhood, 292 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 63.0%
Moderate concern 23.1%
Severe concern 13.9%
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

929-931 Pacific Ave event timeline

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

2026
311 Request Mar 13
Garbage and debris
other bagged boxed contained garbage
311 RequestJan 21
Garbage and debris

See all 10 events

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

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Every record we have

Full data for 929-931 Pacific 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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