Free SF apartment background check

2448 Folsom St

Inner Mission, SF 94110 3611009 2 units · 2 fl · 1900

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Inner Mission — not a forecast
At or below average
avg 2.7
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.7.

Rent & eviction protection

Is 2448 Folsom 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
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1900
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units2
Floors2
Year built1900
Total area2,271 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot3611009
Ownership

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

Mailing address
Baker Ann Birenbaum Ttee 2448 Folsom St San Francisco CA 94110
Last sale
July 08, 2021

Landlord portfolio

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

Unlock complete report
Augrented Insights
Initial analysis

The two-unit residential building at 2448 Folsom Street in the Inner Mission, owned by Ann Sartor Birenbaum 2007 T, is a two-story flats/duplex structure built in 1900. The property has undergone several significant renovations over the past two decades, with the most substantial work occurring in 2014, when a comprehensive partial interior renovation of the lower unit was completed, including foundation work, new shear walls, windows, doors, and a ground-level deck. This project, valued at $25,000, was accompanied by multiple street space permits and plumbing/electrical work. Earlier improvements include a window replacement project in 2008 ($6,000) and major structural work in 2005 involving brick foundation removal and concrete replacement ($56,000). The building's infrastructure received attention in 2004 with a 200-amp underground electrical conversion.

More recently, the property has experienced various maintenance and public safety issues, with multiple 311 calls in 2023-2024 primarily related to street cleaning, graffiti, and parking concerns. Notable incidents include graffiti on both the building and a fire hydrant in late 2023, and several reports of abandoned debris on the sidewalk, including a refrigerator and mattress in mid-2024. The most recent permit activity relates to street space usage, with several such permits being issued between 2014 and 2015, typically associated with ongoing maintenance or improvement work. While the building has undergone significant structural and aesthetic improvements over the years, the recent pattern of graffiti and street cleanliness issues suggests ongoing challenges with property maintenance in the immediate vicinity.

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 2448 Folsom 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
67thpercentile

Out of 2380 buildings in this neighborhood, 785 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
74%
No DBI
violation
26%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Neighborhood location

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

Building age

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

12-Month risk forecast
Low failure risk 26%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

2448 Folsom St 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

Create account

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
8 found
The story over time

2448 Folsom St event timeline

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

2025
Plumbing Permit Aug 20
Work category: 2pa; rough in and trim out two bathrooms. new laundry closet: rough-in new waste, waters, vent, box laundry, connecting gas line on the same existing gas line to the new location.
Complete
Plumbing PermitAug 18
Work category: 2pa; this is to upgrade the gas line to 11/2 from meter to underneath the house and connecting the existing 1-inch pipe for the range to the new piping. for upstairs will be 11/4 halfway and 1 inch to the attic two connect furnace, tankless water heater. this new galvanized piping will be 120 feet of pipe

See all 5 events

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

Unlock complete timeline
Every record we have

Full data for 2448 Folsom St apartments

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

Side by side

How 2448 Folsom St compares to the neighborhood

This building against comparable properties in Inner Mission. Toggle filters to narrow the peer group.

Loading comparables…
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.

Search another address Get full report
Simple pricing

Get the complete picture

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

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Buy 3 Reports — $10
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Buy 30 Reports — $39
Most Popular Current plan
Subscription

Renter

For the weeks when the stakes are highest

$8.33/mo

5premium reports / mo

Billed $100/year — save $44 vs monthly

Renews automatically until you cancel.

  • Unlimited standard reports — 50 records per dataset
  • 5 premium AI reports per month — live data, 200 records per dataset, all 27 record types
  • PDF & Excel exports on every report
  • Compare up to 10 buildings side-by-side
  • Full event timeline — every year of history
  • Landlord portfolio & ownership insights
Start Your Search

Less than $0.28/day. Cancel anytime.

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

Watch 2448 Folsom St
Get alerted the moment a new violation or complaint is filed.