Free SF apartment background check

27-31 Duboce Ave

Inner Mission, SF 94103 3532067 12 units · 3 fl · 1911

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Mission
Above average
avg 2.6
4
FewerMore

This building has 4 novs (7y), above the Inner Mission average of 2.6.

Rent & eviction protection

Is 27-31 Duboce 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 1911
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 built1911
Total area9,807 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3532067
Ownership

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

Owner name
Suncin Family Trust
Mailing address
Carlos & Dinah M Suncin, Tt 125 Rae Ave San Francisco CA 94112
Last sale
120106

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.

29 Duboce Ave, San Francisco, CA 94103
5 Woodward St, San Francisco, CA 94103
27 Duboce Ave, San Francisco, CA 94103
1 Woodward St, San Francisco, CA 94103
31 Duboce Ave, San Francisco, CA 94103
Augrented Insights
Initial analysis

The 27-31 Duboce Avenue property is a 12-unit multi-family residential building constructed in 1911, currently owned by the Suncin Family Trust. The building experienced significant fire and water damage in 2007, resulting in comprehensive repairs that included structural work on the third floor and roof, complete plaster replacement for all units, new kitchen cabinets, bathroom fixtures, and window replacements, totaling approximately $655,000. Following the fire, the property underwent extensive rehabilitation, including the installation of a new fire alarm system, electrical upgrades (400 amps service, 13 new meters), plumbing renovations for all bathrooms and kitchens, and comprehensive window replacements valued at $55,000.

The building has a documented history of fire safety issues, with multiple violations and complaints regarding alarm systems, extinguishers, and sleeping area requirements between 2016 and 2024. More recent fire safety concerns include a December 2023 violation for sleeping area requirements and an August 2024 fire escape complaint (which was found to have no merit). The building's maintenance history shows periodic violations related to various systems, though most have been addressed and abated. Recent 311 calls from early 2025 primarily relate to encampments and sidewalk cleaning issues near the property. While the building has a history of fire-related incidents and system malfunctions, it's important to note that recent fire incidents have typically involved false alarms or system malfunctions, with no reported civilian injuries. The property has undergone several health and safety inspections, with the most recent in March 2011, and has generally complied with necessary repairs and improvements following various violations and complaints.

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

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Risk rating

How 27-31 Duboce 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
7th percentile

Out of 2380 buildings in this neighborhood, 2213 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
21%
No DBI
violation
79%
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.

Building size

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

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 9.9%
Moderate concern 35.2%
Severe concern 54.8%
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

27-31 Duboce Ave event timeline

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

2026
311 Request Jun 09
Other illegal parking
Parking Enforcement
311 RequestJun 09
Garbage and debris

See all 16 events

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

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Every record we have

Full data for 27-31 Duboce 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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