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829-833 Union St

Russian Hill, SF 94133 0119002 4 units · 2 fl · 1909

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 Russian Hill
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 829-833 Union 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 1909
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units4
Floors2
Year built1909
Total area2,924 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0119002
Ownership

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

Owner name
Hall Family Trust - Bypass
Mailing address
Gail B Hall, Trustee 738 34Th Ave San Francisco CA 94121
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.

831 Union St, San Francisco, CA 94133
833 Union St, San Francisco, CA 94133
829 Union St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The property at 829-833 Union St is a 2-story, 4-unit multi-family residential building constructed in 1909 and currently owned by the Hall Family Trust - Bypass. The building has undergone several significant maintenance and improvement projects over the years, including a $9,000 renovation in 2013 at unit 833 that involved replacing drywall, fixtures, and performing bathroom and kitchen updates, as well as a complete reroofing in 2004 that cost $10,820. A notable cluster of building violations occurred in May 2005, primarily related to fire safety concerns, including issues with fire extinguishers, emergency exits, smoke detectors, and gas meter instructions, though all these violations were successfully abated by July 1, 2005.

The building has experienced some maintenance issues over its history, including a complaint in July 2017 regarding abandoned construction equipment blocking the sidewalk, though this was marked as "Not Active." The property has also been the subject of various municipal service requests in the surrounding area, particularly in recent years, with multiple reports in 2021 and 2024 relating to sidewalk cleanliness and waste management. Recent 311 calls have primarily concerned street cleaning and waste management issues outside the building, rather than internal building conditions. While the building's documented history shows it has addressed major building code violations when cited, there have been recurring neighborhood maintenance issues related to waste management, as evidenced by multiple 311 calls regarding garbage receptacle placement and sidewalk cleanliness.

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

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Risk rating

How 829-833 Union 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
75th percentile

Out of 1133 buildings in this neighborhood, 283 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 42.8%
Moderate concern 15.6%
Severe concern 41.7%
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

829-833 Union St event timeline

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

2026
311 Request May 03
Other illegal parking
Parking Enforcement

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

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Every record we have

Full data for 829-833 Union St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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