521 Porter Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 521 Porter Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 10 permits, 2 not closed, and 7 violations, 1 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 521 Porter Street at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated heat wave and cold wave risk.
Permits and code violations
2 permits not closed out. Unfinished permits pass to the next owner. 1 open violation.
- Plumbing permit Nov 2025Completed
Curb trap, fresh air inlet & main drain.
- Plumbing permit Nov 2025Cancelled
Curb trap, fresh air inlet & main drain.
- Plumbing permit Aug 2021Completed
Install shower, toilet and vanity install piping to fixtures
- Residential building permit Aug 2021Expired
Ez residential alterations standards permit - sfd property per attached standard. deviations from this standard will result in permit revocation and require submission of construction plans. structural alteration or repair is expressly prohibited under this permit. prohibited structural work any modifications to exterior walls, party walls, floor/roof framing or foundations, including underpinning, excavation, and removal of foundation slab. no work may be performed in the basement or cellar. separate permits required for mechanical, electric and plumbing. this permit is for the alterations approved by the phdc as per work order number: 154865 - second floor bathroom remodel and enlarging door, installing ground fault receptacle circuit, exhaust fan, medicine cabinet & light for philadelphia housing development corporation (phdc) for the amp repair program. (amp)
- Electrical permit Jul 2021Completed
Distribution panel, 32 circuit capacity remove wall or floor material (fishing) as per 2014 nec
- Plumbing permit Dec 2016Completed
Replace curb trap & fai pa20163470447 self certification no longer accepted all trenches in excess of 5 ft must have approved shoring at the time of inspection.
- Alteration permit Aug 2016Completed
Ez permit stadard alterations- 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. interior painting, flooring, kitchen cabinets installtion counter top installation. (all work to be performed by homeowner)
- Plumbing permit Sep 2013Completed
Repair water service (sfd) pa1 call#20132460654
- Plumbing permit May 2010Completed
Replace 3/4" water service
- Plumbing permit Jan 2008Completed
Replace water heater
Philadelphia Department of Licenses and Inspections
Safety and environment
FEMA natural hazard risk
Relatively Moderate
Highest for this area: heat wave, cold wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Superfund site
1.3 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 (1,100 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
1,950 ft
Growing Home Garden. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
3,050 ft
Inolex Chemical Co and 4 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
650 ft
Taggart John H Sch (650 ft), Key Francis Scott Sch (1,550 ft), Sharswood George Sch (1,700 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
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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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- 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.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
The year built, height regime, structure, and elevator for this address are being indexed right now, city by city. Save the page and check back: it fills in over time. If you live here, you can fill it in yourself in a minute by leaving a review.