4400 Walnut Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 4400 Walnut Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 3 permits, all closed, and 38 violations, 4 open.
- What is the 2026 conforming loan limit in Philadelphia County?
- $832,750 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 2, moderate potential.
- What natural disasters is 4400 Walnut Street at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated heat wave risk.
Permits and code violations
Every permit on file is closed out. 4 open violations.
- Commercial building permit Jul 2023Completed
For the replacement of stairs in an existing exterior stair tower as shown on application/plan and in accordance with the 2018 iebc.
- Alteration permit Jan 2018Completed
Make safe permit to comply case no. 589923. all work to be done in accordance with engineer's report and approved plans. any work beyond the scope of the engineer's report requires separate permit.
- Demolition permit Sep 2010Completed
Remove 1 x 1000 gallon above ground oil tank in basement including associated pipes.
Philadelphia Department of Licenses and Inspections
Safety and environment
FEMA natural hazard risk
Relatively Moderate
Highest for this area: heat wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Superfund site
2.9 mi
Austin Avenue Radiation Site (Deleted NPL Site). Check groundwater and vapor reports on the EPA site page.
EPA National Priorities List
Leaking fuel tanks
14 within 1,650 ft
Nearest: 7 Eleven 40460, 4601 Walnut St (1,000 ft), open. 5 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
650 ft
4415 Chestnut St and 15 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
3,600 ft
Good Humor Corp. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
Radon potential
Moderate
Average indoor levels of 2 to 4 pCi/L. EPA still suggests testing ground-floor and basement units.
EPA and USGS Geologic Radon Potential Map
Nearest public schools
850 ft
Penn Alexander Sch (850 ft), Robeson HS for Human Services (1,500 ft), Lea Henry C Sch (1,700 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
5.9 mi
Philadelphia International (PHL). Aircraft may be audible under approach paths.
FAA large-hub airports
Conforming loan limit 2026
$832,750
Philadelphia County. Mortgages up to this amount qualify for Fannie Mae and Freddie Mac pricing. Above it, the loan is a jumbo with stricter terms.
FHFA Conforming Loan Limit Values, one-unit
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What's worth checking in person before deciding.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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