421 Porter Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 421 Porter Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 19 permits, 2 not closed, and 31 violations, 3 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 421 Porter Street at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated inland flooding and heat wave risk.
Permits and code violations
2 permits not closed out. Unfinished permits pass to the next owner. 3 open violations.
- Residential building permit Mar 2024Expired
Legalize interior renovation to finishes only, paint, flooring, kitchen cabinets & wall partitions. no structural work included. no replacement of floor joists included.
- General permit minor May 2021Expired
For minor construction work at the subject property in accordance with all applicable provisions of the philadelphia code, all references codes and standards, and the attached ez standard, where included. deviation from this standard shall result in permit revocation. a separate permit from the philadelphia department of streets is required for any sidewalk and street closures. all means of pedestrian protection required at the site in accordance with the philadelphia building code chapter 33 shall be in place prior to start of work.
- Plumbing permit Jan 2021Completed
Repair curb trap and fai
- Plumbing permit Dec 2019Completed
Replace 3/4" water service-pa1#20193512677-"self-certification's are no longer permitted" - "all excavations and plumbing trenches in excess of 5 feet in depth must have approved shoring in place at the time of inspection"
- Alteration permit Mar 2018Completed
- for alterations to an existing one family dwelling as per attached standard. deviations from this standard will result in permit revocation and require submission of construction plans.(conrifmed with contractor no change to elevation of basement)
- Use permit Dec 2014Completed
For use reduction to single family dwelling in an existing structure.
- Plumbing permit Jul 2013Completed
Replace curb trap and 15' of house drain pa20132110570
- Plumbing permit Feb 2013Completed
Curb trap (sfd) pa1 call#20130420319
- Plumbing permit Nov 2012Completed
Replacement of curb trap, fai, main house drain, rain leader cesspool, laundry tray, 2" sink vent, kitchen sink waste line, new toilet, under floor plumbing second floor bath pa20123200442
- Plumbing permit May 2012Completed
Replace cur trap, fresh air inlet, main drain
- Alteration permit Dec 2009Completed
Applicant agrees to limit the construction to comply with ez permit standard for interior alterations, dated feb. 2007. deviations from this standard will result in the revocation of this permit and imposition of further penalties. work to include replacing stairs as per drawing. stucco and vinly siding on exterior.
- Fast form building permit Nov 2009Completed
Philadelphia Department of Licenses and Inspections
Safety and environment
FEMA natural hazard risk
Relatively Moderate
Highest for this area: inland flooding, heat wave, cold wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Superfund site
1.2 mi
Publicker Industries Inc. (Deleted NPL Site). Check groundwater and vapor reports on the EPA site page.
EPA National Priorities List
Leaking fuel tanks
3 within 1,650 ft
Nearest: Exxon Rs 2 2720, 435 Oregon Ave (1,000 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
2,000 ft
Growing Home Garden. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
2,650 ft
Inolex Chemical Co and 5 more within a mile. 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
250 ft
Taggart John H Sch (250 ft), Sharswood George Sch (1,300 ft), Key Francis Scott Sch (1,900 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
5.5 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 Porter Street
All addressesViewing recommendations
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.
- 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 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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