3451 Walnut Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 3451 Walnut Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 60 permits, 8 not closed, and 28 violations.
- 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 3451 Walnut Street at risk for?
- FEMA's National Risk Index rates the area very high overall, with elevated tornado and inland flooding risk.
Permits and code violations
8 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Commercial building permit Apr 2026Issued
For exterior alterations at the roof to install fall-protection guards as per approved plans and in accordance with 2018 iebc. separate permits to be obtained for all other work.
- Fire suppression permit Sep 2024Completed
Ez permit sprinkler relocation (nfpa 13)- for the relocation of sprinkler heads as per attached standards. deviations from these standards require submission of construction and site plans. relocate 4 heads
- Electrical permit Aug 2024Completed
Install box and conduit qty. 3 install exit sign qty. 1 relocate lights qty. 3
- Commercial building permit Aug 2024Completed
For level ii interior alterations with no change in use as per approved plans.
- Commercial building permit Apr 2024Completed
For exterior wall repairs to include stucco, concrete and brick repair as per approved plans.
- Electrical permit Jun 2023Completed
Furnish and install 19 duplex receptacles, 2 quad receptacles, 1 gfi, 1 floor core. install 28 new 2x4's and relocate 13 existing 2x4's, 5 exit signs as per 2017 necc. install fire alarm as per drawings and as per 2016 nfpa 72.
- Fire suppression permit Jun 2023Completed
Ez permit sprinkler relocation (nfpa 13)- for the relocation of sprinkler heads as per attached standards. deviations from these standards require submission of construction and site plans. relocate 22 sprinkler heads
- Mechanical / fuel gas permit Jun 2023Completed
For the installation of registers, diffusers and appliances with associated ductwork. work to accommodate the 2nd floor of an existing structure. appliances to be installed in accordance with manufacturer's specifications. all work to be done per approved plans. if field conditions vary contact design engineer prior to the start of any work. separate permits required for all other work.
- Commercial building permit Jun 2023Completed
Level ii interior alterations (no change of occupancy) for renovations to 1st and 2nd floor level of an existing higher educational building (franklin bldg, i-5) as per approved plans. existing building fully sprinklered. *2018 iebc review* **separate permits required for any mep or fire suppression work**
- Operations permit Apr 2022Expired
Install two tents at shoemaker green for penn relays as per 2018 philadelphia fire code.
- Electrical permit Apr 2022Completed
1)demolition of existing lighting and receptacles in island desk. safe off below floor. 2)rework existing switch legs to divide lighting circuit into 2 rooms 3)a single pole light switch at door of new room 4)provide (4) 20a 120v receptacles via existing circuits in new wall. 5)provide ring and string for data in new wall 6)provide (1) 20a 2 pole 20a circuit for electric range in ot gym a.control power only - will not run heating elements as per 2017 nec
- Operations permit Mar 2022Expired
Tent with weights on patio for dental school (on the grade level) as per 2018 philadelphia fire code.
Philadelphia Department of Licenses and Inspections
Safety and environment
FEMA natural hazard risk
Very High
Highest for this area: tornado, inland flooding, heat wave, cold wave, winter weather. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
6 within 1,650 ft
Nearest: Gen Svcs Bldg, 3330 Market St (1,350 ft), open. 1 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
1,900 ft
Dupont Crescent Schuylkill River Dev Corp and 2 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
1,800 ft
Ge Co Re Entry Sys Department and 6 more within a mile. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
Historic listing nearby
350 ft
Sansom Row. Exterior changes can need preservation review; listed buildings can qualify for rehabilitation tax credits.
National Park Service, National Register
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
1,600 ft
Powel Samuel Sch (1,600 ft), Science Leadership Academy MS (1,600 ft), Robeson HS for Human Services (3,600 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
6.1 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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More on Walnut Street
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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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- 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.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- 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.
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