642 Diamond Street, Philadelphia
technical data · neighborhood and transit
Quick answers
- Does 642 Diamond Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 54 permits, 11 not closed, and 60 violations, 8 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 642 Diamond 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
11 permits not closed out. Unfinished permits pass to the next owner. 8 open violations.
- Plumbing permit Sep 2026Completed
Replace 3/4 water service
- Plumbing permit Jun 2026Issued
Installation of 3 full bathrooms, 2 kitchens, 2 hot water heaters, 2 laundry sinks & 2 dishwashers (not fixtures).
- Mechanical / fuel gas permit Apr 2026Issued
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) hvac sytems, (1) in each dwelling. first floor - 2 ton 24k btu heat pump with 8kw heating strip, air handler, new ductwork, and 5 registers. second floor - 2 ton 24k btu heat pump with 8kw heating strip, air-handler, new ductwork, and 7 registers.
- Zoning permit Apr 2026Issued
Residential - household living - two-family
- Zoning permit Mar 2026Issued
Limited lodging
- Electrical permit Feb 2026Issued
Total rewire per nec 2017, 200 amp service for 1st unit(basement + first floor), 200 amp at 2nd unit (2nd floor +3rd floor) and 100 amp at common area (hallway)
- Residential building permit Jan 2026Issued
For level iii alterations with partial change of occupancy (no change of occupancy classification, group r-3 to group r-3) to create a two-family dwelling within an existing two (2) story building as per approved plans. existing building not required to be sprinklered. *2018 iebc review* *separate permits required for electrical, plumbing, and mechanical work*
- Zoning permit Dec 2025Issued
Residential - household living - two-family
- Plumbing permit Jan 2025Completed
Install 1-1/2 backflow preventer
- Electrical permit Jun 2023Completed
Install 400 amp service & wire building as per submitted plans and 2017 nec. install fire alarm system as per submitted plans and as per 2016 nfpa 72.
- Plumbing permit Jun 2023Completed
10 full bath, 5 kitchen,5 laundry,5 hot water heater 1.5 " water service
- Mechanical / fuel gas permit Mar 2023Completed
For the installation of hvac equipment, applicances, ductwork and registers/diffusers per approved plans and manufacturer's specifications.
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
Leaking fuel tanks
7 within 1,650 ft
Nearest: Pgw Ninth & Diamond Transp Dept, 900-940 W Diamond St (750 ft), open. 3 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
450 ft
8th Diamond St Playground and 24 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
2,900 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
Historic listing nearby
400 ft
Ferguson, Joseph C., School. 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
350 ft
The U School: Innovative Lab (350 ft), McKinley William Sch (1,300 ft), Welsh John Sch (2,200 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
9.2 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.
- 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 specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- 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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