Free SF apartment background check

3999 Mission St

Bernal Heights, SF 94112 5802020 20 units · 4 fl · 1988

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 Bernal Heights
Above average
avg 1.2
7
FewerMore

This building has 7 novs (7y), above the Bernal Heights average of 1.2.

Rent & eviction protection

Is 3999 Mission 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 1988
2 or more units
20 units
Property type
Multi-Family Residential
Zoning
NC2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units20
Floors4
Year built1988
Total area25,804 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5802020
Ownership

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

Owner name
Lynn Justin Ian
Mailing address
1160 Mission St Unit 1601 San Francisco CA 94103
Last sale
021800

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.

3999 Mission St, San Francisco, CA 94112
5 Murray St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The 20-unit multi-family residential building at 3999 Mission Street in Bernal Heights, owned by Lynn Justin Ian, was constructed in 1988 and spans four stories. The property has undergone numerous modifications and improvements over the years, particularly regarding its telecommunications infrastructure, with the most recent significant work completed in 2021 costing $30,000 to upgrade T-Mobile's telecom facility with new antennas and equipment. The building has experienced recurring issues with water intrusion and leaks, most notably documented in multiple complaint records between 2015-2016, and more recent water-related problems from the balcony reported in 2008. Recent inspections in late 2023 revealed several building code compliance issues in common areas, including concerns about fire extinguisher tags and compliance affidavits, though these violations were marked as not active by December 2023.

The building has a mixed history of maintenance and violations requiring attention to life safety systems, particularly its sprinkler/standpipe systems and fire extinguishers, with violations documented in 2024, 2023, and earlier. There were also fire safety concerns addressed between 2018-2024 regarding alarm systems, roof access, and sprinkler maintenance. Recent electrical work was performed in late 2022 to upgrade the power infrastructure, while various permits from 2006-2016 show routine maintenance and system upgrades, including a significant 2009 door replacement project to address patio leaks. The property has experienced multiple instances of documented water-related problems, with tenants reporting issues in various units over the years, though most violations from the early 2000s were eventually abated. Recent complaints have also noted issues with the building's fire safety systems, including violations for sleeping area requirements and sprinkler system maintenance as of 2024.

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

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Risk rating

How 3999 Mission 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
2th percentile

Out of 1276 buildings in this neighborhood, 1250 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
22%
No DBI
violation
78%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

Neighborhood location

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

12-Month severity forecast
No violation 13.1%
Moderate concern 34.2%
Severe concern 52.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

3999 Mission St apartment reviews

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The story over time

3999 Mission St event timeline

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

2026
311 Request Jun 17
Parking on sidewalk
Parking Enforcement
311 RequestJun 16
Parking on sidewalk

See all 19 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3999 Mission 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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