Free SF apartment background check

339 27Th St

Noe Valley, SF 94131 6592045 2 units · 2 fl · 1900

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 Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 339 27Th 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 1900
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors2
Year built1900
Total area2,051 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6592045
Ownership

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

Owner name
Sweeney Mark Allan & Meliss
Mailing address
339 27th St San Francisco CA 94131
Last sale
090420

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.

339 A 27th St, San Francisco, CA 94131
339 27th St, San Francisco, CA 94131
Augrented Insights
Initial analysis

The 2-unit multi-family residential building at 339 27th Street in Noe Valley, owned by Mark Allan Sweeney and Melissa Tongo, was constructed in 1900 and has undergone significant renovations and repairs over the past several years. Most notably, in 2022, the property received substantial infrastructure upgrades with the replacement of 30 feet of sewer lateral and copper water main installation. Between 2014 and 2019, extensive plumbing work was completed, including the installation of radiant underfloor heating systems for both units, bathroom and kitchen improvements, and comprehensive plumbing system updates. The electrical system was upgraded in 2020 with a service upgrade to 200 amps and the installation of new sub-panels, following earlier work in 2017 that included rewiring and sub-panel replacement.

The building has had several maintenance issues requiring attention, including repairs to the front wooden stairs in 2020 to address wood rot, and the replacement of eighty feet of backyard fencing in the same year. There have been some resident complaints regarding construction noise in 2019 and 2020, though these cases are no longer active. Historical records show a water drainage issue documented in 2005 that reportedly caused damage to a neighboring property. Multiple permits were issued between 2014 and 2019, some of which expired and required renewal to complete the work, particularly related to plumbing and electrical systems. Recent 311 calls from 2021-2023 have mainly concerned parking issues and waste management compliance, though these are not directly related to building maintenance or safety.

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

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Risk rating

How 339 27Th 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
32th percentile

Out of 1879 buildings in this neighborhood, 1278 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
66%
No DBI
violation
34%
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.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

DBI tenant complaints (past 7 years)

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 65.0%
Moderate concern 17.0%
Severe concern 18.0%
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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On the map

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The story over time

339 27Th St event timeline

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

2022
Plumbing Permit Jul 14
Work category: 2pb; replace up to 30 feet of sewer lateral from curb to front of property new house trap included - replace galvanized water main from meter to front of property in copper .
Complete

See all 6 events

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

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Every record we have

Full data for 339 27Th St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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