Free SF apartment background check

391-397 27Th Ave

Central Richmond, SF 94121 1406018 4 units · 2 fl · 1923

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 391-397 27Th 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 1923
2 or more units
4 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
Units4
Floors2
Year built1923
Total area4,600 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1406018
Ownership

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

Owner name
Edward J & Linda R Demartin
Mailing address
Edward & Linda Demartini Tt 558 Holyoke St San Francisco CA 94134
Last sale
000000

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

393 27th Ave, San Francisco, CA 94121
397 27th Ave, San Francisco, CA 94121
395 27th Ave, San Francisco, CA 94121
391 27th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The multi-family residential building at 391-397 27th Avenue in San Francisco's Central Richmond neighborhood is a two-story, four-unit apartment building constructed in 1923, currently owned by Edward J & Linda R Demartin. The building has undergone several significant maintenance and upgrade projects over the years, with the most recent major work being multiple parking enforcement requests in 2024 for blocked driveways. Some of the notable improvements include a complete reroofing project in 2009 costing $21,000, comprehensive furnace system upgrades in 2008-2009 involving new furnaces, ductwork, and related infrastructure ($6,000) including electrical work, and a sewer line replacement in 2012.

The building has experienced a few maintenance issues affecting resident comfort, most notably a mold incident in 2012 linked to unresolved water leakage from the roof and bathroom, though this was later abated. Historical records show the building underwent routine housing inspections in 2001 and 2008, and has had multiple parking-related incidents in recent years, with several citations issued for blocking driveways between 2024-2025. While the building has maintained basic compliance with housing standards, the uneven pattern of maintenance work and the recent cluster of parking enforcement issues may be of interest to current and prospective tenants.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 391-397 27Th 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
26th percentile

Out of 2250 buildings in this neighborhood, 1665 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 68.3%
Moderate concern 18.8%
Severe concern 12.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

391-397 27Th Ave apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

391-397 27Th Ave event timeline

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

2026
311 Request Jun 08
Garbage and debris
furniture
311 RequestApr 23
Blocking driveway cite only

See all 6 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 391-397 27Th Ave apartments

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

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

Watch 391-397 27Th Ave
Get alerted the moment a new violation or complaint is filed.