Free SF apartment background check

1231 Fulton St

Alamo Square, SF 94117 1181025 6 units · 3 fl · 1906

This building has more problems than most buildings in this neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Alamo Square
At or below average
avg 2.3
1
FewerMore

This building has 1 novs (7y), at or below the Alamo Square average of 2.3.

Rent & eviction protection

Is 1231 Fulton 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 1906
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units6
Floors3
Year built1906
Total area6,414 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1181025
Ownership

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

Owner name
Lang Hong Lap & Van Thi Ngu
Mailing address
1327 22nd Ave San Francisco CA 94122
Last sale
082102

Landlord portfolio

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

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Augrented Insights
Initial analysis

Located in San Francisco's Alamo Square neighborhood, 1231 Fulton Street is a 6-unit, 3-story multi-family residential building constructed in 1906 and currently owned by Lang Hong Lap & Van Thi Ngu. The building has undergone significant safety and modernization improvements in recent years, including the installation of two new accessory dwelling units (ADUs) in the basement in 2017, a completed soft-story seismic retrofit in 2017, and a comprehensive fire safety upgrade completed in 2023 that included fire alarm system improvements and the installation of new sprinkler systems. The building's infrastructure has been significantly updated between 2019-2022, with comprehensive plumbing and electrical renovations including bathroom and kitchen remodels, new furnaces, and electrical upgrades with smoke detectors and safety features in units 7 and 8.

The property has maintained compliance with various safety programs, including the Mandatory Soft Story Retrofit Program, achieving completed status and receiving a Certificate of Final Completion. While there was a building complaint filed in 2020 regarding soft-story retrofit compliance, this was eventually abated in May 2024. The building has undergone regular routine safety inspections, with only one historical complaint in 2002 regarding unauthorized construction work and chemical odors, which was promptly resolved. Recent 311 calls primarily relate to parking issues near the property, including multiple reports of blocked driveways between 2022-2024, but these are not directly related to building conditions. The property's maintenance record shows significant investment in safety systems and infrastructure, with the most recent work focusing on fire safety upgrades and compliance with modern building standards.

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

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Risk rating

How 1231 Fulton 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
21th percentile

Out of 305 buildings in this neighborhood, 241 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
41%
No DBI
violation
59%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 43.8%
Moderate concern 44.2%
Severe concern 12.0%
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

1231 Fulton St event timeline

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

2023
Building Permit Oct 31
Upgrade existing fire alarm system to comply with sffc section 1103.7.6.1. add 22 lf sounders. install mini module for fire sprinkler monitoring, 1 flow and tamper. ref sprinkler 202206136192.
$20,000 · Issued

See all 13 events

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

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Every record we have

Full data for 1231 Fulton 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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