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2833-2835 Union St

Cow Hollow, SF 94123 0949023 2 units · 4 fl · 1933

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 Cow Hollow
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Cow Hollow average of 0.7.

Rent & eviction protection

Is 2833-2835 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 1933
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
Floors4
Year built1933
Total area5,894 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0949023
Ownership

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

Owner name
Last Block Llc
Mailing address
2833 Union St San Francisco CA 94123
Last sale
080917

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.

2835 Union St, San Francisco, CA 94123
2833 Union St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The property at 2833-2835 Union Street is a four-story, two-unit multi-family residential building constructed in 1933, currently owned by Last Block LLC. The building underwent significant renovations in 2013-2015, including the addition of a fourth-floor penthouse and decks, reconfiguration of front stairs and garage, comprehensive interior remodeling of both units, and major system upgrades (electrical, mechanical, and plumbing) with a reported cost of $500,000. During this renovation period, several safety improvements were made, including the installation of a fire sprinkler system with 76 heads ($20,000) and replacement of cracked terracotta flue tiles with a metal flue system ($12,884).

The building has had some operational challenges, particularly in 2015 with violations related to boiler permits, which were resolved by June 2015. A complaint regarding window replacements in 2016 was filed concerning alleged intrusion into neighboring property, though this was noted as "not active." More recent issues include 311 calls for a blocked sidewalk due to construction materials in 2015, rodent/insect infestation in early 2015, and a sewage backup incident in 2014. The property has maintained compliance with building codes, as evidenced by the successful completion of multiple permits and inspections, though there have been some instances of permit-related penalties that were ultimately resolved.

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

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Risk rating

How 2833-2835 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
55th percentile

Out of 861 buildings in this neighborhood, 387 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
80%
No DBI
violation
20%
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 floors

Building height affects maintenance complexity and is one of the size signals the model uses.

Building size

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 78.5%
Moderate concern 14.6%
Severe concern 6.9%
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

2833-2835 Union 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 2833-2835 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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