Free SF apartment background check

3420 Market St

Twin Peaks, SF 94114 2717055 13 units · 4 fl · 1957

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 Twin Peaks
Above average
avg 3.0
7
FewerMore

This building has 7 novs (7y), above the Twin Peaks average of 3.0.

Rent & eviction protection

Is 3420 Market 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 1957
2 or more units
13 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
Units13
Floors4
Year built1957
Total area8,367 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2717055
Ownership

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

Owner name
Sf Multifamily Iii Property
Mailing address
Ballast Investments 49 Powell St Fl 4 San Francisco CA 94102
Last sale
050619

Landlord portfolio

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

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Augrented Insights
Initial analysis

3420 Market Street is a 4-story, 13-unit multi-family residential building constructed in 1957, currently owned by SF Multifamily III Property. The property has undergone significant safety and comfort improvements over the past decade, including recent fire alarm system updates in 2023 to comply with San Francisco Fire Department requirements. Major renovations in 2016-2018 included comprehensive updates to multiple units (1, 2, 4, 5, 8, 9, 10, and 12) featuring new heaters, kitchens, bathrooms, electrical systems, and plumbing work. The building's fire safety systems have been a particular focus, with multiple sprinkler installations, fire alarm upgrades, and heater vent system improvements completed between 2016-2023, including the most recent fire alarm replacement system filed in May 2023.

The property has experienced periodic maintenance and compliance issues, though most have been promptly addressed. Recent concerns from January 2024 involved fire extinguisher maintenance and compliance affidavit requirements, while a 2023 complaint noted an erosion issue with the front yard affecting sidewalk access. Historical violations from 2003 related to fire escape maintenance and storage issues in common areas were resolved by May 2003. The building has a Tier 3 soft-story retrofit certification, indicating it has completed required seismic improvements. Recent 311 calls in 2023-2024 primarily relate to street cleaning, sidewalk maintenance, and graffiti removal, indicating ongoing attention to building exterior maintenance and public spaces.

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

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Risk rating

How 3420 Market 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
51th percentile

Out of 172 buildings in this neighborhood, 84 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
57%
No DBI
violation
43%
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 location

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

12-Month severity forecast
No violation 48.6%
Moderate concern 43.8%
Severe concern 7.6%
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

3420 Market St event timeline

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

2026
Electrical Permit Apr 17
Witness test for existing electrical permit: e202604060110
Issued
Electrical PermitApr 06
Online electrical permit: 120 of buildings of 7-12 dwelling units. installation of a fire alarm system with low frequency horn sounders in the units. installation of a wireless aes radio..

See all 21 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3420 Market 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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