403 Diamond Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 403 Diamond Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 21 permits, 9 not closed, and 37 violations, 5 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 403 Diamond Street at risk for?
- FEMA's National Risk Index rates the area relatively low overall, with elevated heat wave risk.
Permits and code violations
9 permits not closed out. Unfinished permits pass to the next owner. 5 open violations.
- Electrical permit Feb 2026Issued
Restoration of the electrical system to its original condition following prior damage. work includes the replacement of electrical wiring, lighting fixtures, and devices (receptacles/switches) 110v interconnected smoke alarms . all work will maintain the original design and configuration with no modifications to the existing layout or structure from existing 200a service. -2017 nec.
- Plumbing permit Jan 2026Issued
Plumbing work for one bathroom on second floor and kitchen area
- Mechanical / fuel gas permit Dec 2025Issued
Ez permit ductwork & warm-air appliances - for the installation of new ductwork, registers/grilles/diffusers, and warm-air appliances as per attached standards. deviations from these standards require submission of construction and site plans. multi family - each hvac unit to be self-contained within each dwelling unit. no penetrations of rated assemblies. install (2) new hvac systems, one in each dwelling unit. each dwelling will have a 40k btu furnace, 2 ton ac, new ductwork, and 9 diffusers (18 total)
- Electrical permit Dec 2025Issued
New 200 amp service, meter sockets, distribution panels (in respective units), rewire entire house to include receptacles, lighting circuits, water heaters, appliances and hvac equipment, install smoke alarms and co detectors as required for two household dwelling units. all work to comply with 2017 nec.
- Plumbing permit Dec 2025Issued
New fixtures with piping to include: 3 water closets, 3 lavatories, 3 shower/tub units, 2 water heaters, 2 laundry sinks, and 2 kitchen sinks. all work per 2018 ppc section 919 single stack drainage, waste, and vent system.
- Residential building permit Dec 2025Issued
For alterations to an existing attached structure used as a two-family dwelling as per building application/plan. **amendment 4/20/26** for documentation of structural alterations as per plan.
- Residential building permit Nov 2025Issued
For interior and exterior alterations to an existing attached single-family dwelling per plans. separate permits are required for all associated mechanical, electrical, and plumbing work. basement to remain non-habitable, to be used for storage and utilities only.
- Zoning permit May 2024Issued
For the erection of two (2) accessory roof deck (for residential use only) with two (2) roof access structures above the existing two story all as part of an existing attached structure. size and location as shown in the application / plans.
- Zoning permit Jul 2023Issued
Residential - household living - two-family
- Demolition permit Oct 2021Completed
For the complete demolition of sfd as part of the city of philadelphia demolition program. * add'l specs. no stucco. no sidewalk. 2 stucco c/w 407 & 411 diamond st & erosion control mat with seed on lot to be completed by third party
- Plumbing permit Jan 2021Completed
House drain, curb trap & fresh air inlet. 1 1/2" water service ppc 2018 new piping with fixtures: 3 water closet/toilet 3 lavatory/sink 3 shower/tub 1 kitchen sink 1 laundry sink 1 hose bibs 1 dishwasher 1 hot-water heater
- Fire suppression permit Dec 2020Completed
For the installation of one (1 1/2) inch combined service line for a fire & domestic supply line. multipurpose residential fire sprinkler system designed in accordance with nfpa 13d. all work shall be accordance with approved plams. hydraulic calculations, and approved building permit. any deviations will require a seperate permit
Philadelphia Department of Licenses and Inspections
Safety and environment
FEMA natural hazard risk
Relatively Low
Highest for this area: heat wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
3 within 1,650 ft
Nearest: Johns Svc Sta & Auto Parts, 2201 N 6th St (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
650 ft
Davis Lamp Building and 32 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
1,750 ft
York Metal Finishing Co and 3 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
300 ft
McKinley William Sch (300 ft), Welsh John Sch (1,500 ft), The U School: Innovative Lab (1,600 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
9.3 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 Diamond 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.
- 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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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