Free SF apartment background check

2435 Union St

Cow Hollow, SF 94123 0537001B 12 units · 3 fl · 1925

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Cow Hollow
Above average
avg 0.7
2
FewerMore

This building has 2 novs (7y), above the Cow Hollow average of 0.7.

Rent & eviction protection

Is 2435 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 1925
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
RM1
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
Units12
Floors3
Year built1925
Total area11,607 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0537001B
Ownership

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

Owner name
Mario & Kathleen Delucchi I
Mailing address
Donald Newman, Trustee 1140 Oddstad Rd Pacifica CA 94044
Last sale
000000

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The 12-unit, 3-story apartment building at 2435 Union St in Cow Hollow, owned by Mario & Kathleen Delucchi I, was constructed in 1925 and has undergone several significant renovations and improvements over the past decades. Most notably, the building completed a mandatory soft-story retrofit in 2016 (Tier 3) to enhance seismic safety, with work valued at $150,000. Recent maintenance includes a boiler installation in 2019 (now expired), while Unit #102 received substantial renovations in 2011, including kitchen upgrades and electrical improvements. The building has experienced various maintenance issues over the years, including several fire safety concerns in 2002 that were promptly addressed, and more recent fire alarm system issues in 2021 and 2022, which were also corrected. The property has maintained active compliance with building codes, with the most recent fire alarm system complaint from July 2022 showing a "Condition Corrected" status.

Historical records show the building has undergone multiple infrastructure improvements, including foundation and retaining wall work in the late 1990s, and various unit renovations throughout the years. Regular maintenance and compliance inspections have revealed occasional issues, such as a refrigerator problem in 2015 and a sidewalk water leak in 2009, both of which were resolved. The building has required several street space permits over the years, with the most recent activity primarily involving routine city services like garbage collection and street cleaning, as documented in 311 calls. The property has shown consistent attention to safety and maintenance requirements, with all recorded violations and complaints being promptly addressed and resolved, demonstrating ongoing management commitment to building upkeep and resident safety.

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

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Risk rating

How 2435 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
6th percentile

Out of 861 buildings in this neighborhood, 809 are predicted to be safer.

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

Building size

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 29.9%
Moderate concern 43.5%
Severe concern 26.6%
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

2435 Union St event timeline

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

2025
Building Violation (NOV) Oct 01
No permit to operate the boiler. serial no do4eno128, cmc 1022. monthly monitoring fee applies. code sec: sfbc 110a, table 1a-k
Building Violation (NOV)Oct 01
No permit to operate the boiler. serial no 554676-200608, cmc 1022. monthly monitoring fee applies. code sec: sfbc 110a, table 1a-k

See all 11 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2435 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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