493 Diamond Street, Philadelphia
Estimated number, map position is approximatetechnical data · neighborhood and transit
Quick answers
- Does 493 Diamond Street have open permits or code violations?
- Philadelphia Department of Licenses and Inspections lists 52 permits, 6 not closed, and 60 violations, 23 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 493 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
6 permits not closed out. Unfinished permits pass to the next owner. 23 open violations.
- Plumbing permit Oct 2026Issued
Alterations to existing building to create an additional apartment on the 3rd floor. interior installation of drainage, waste, vent, and water supply for listed fixtures. venting to be designed and installed in accordance with section 919 philadelphia single stack vent system. all work to be installed in strict compliance with 2018 ppc and approved plans
- Electrical permit Sep 2026Issued
Electrical permit for combo cp-2026-000929
- Mechanical / fuel gas permit Sep 2026Issued
Mechanical / fuel gas permit for combo cp-2026-000929
- Commercial building permit Sep 2026Issued
For a rear third floor addition to an existing structure. work to include a level iii interior alterations with change in occupancy. for a multi-family household living for four (4) dwelling units. alterations to include selective demolition and the installation of new wall partitions, provide finishes and furnishings throughout as per approved plans. all work to be done per approved plans.** if field conditions vary contact design engineer prior to the start of any work**iebc 2018**existing building to be fully sprinklered pe rnfpa 13r min** separate permits required for all other work**
- Zoning permit Aug 2026Issued
For the erection of a vertical addition to an existing attached building. size and location as shown in application/plans
- Residential building permit Nov 2025Completed
For the structural repair to exterior wall, joists and roof to resolve case #cf-2025-086185. a separate permit is required for any additional alterations that are not specifically addressed on case #cf-2025-086185. ** special inspections required **no excavation greater than 60 inches with this permit **
- Zoning permit May 2025Issued
Residential - household living - multi-family
- Electrical permit Jan 2023Completed
New 200 amp service, meter scoket, distribution panle, wiring for receptacles, lighting, and hvac equipment. install smoke alarms and co detcetors as required for single household dwelling unit. all work per 2017 nec.
- Mechanical / fuel gas permit Jan 2023Completed
Ez permit ductwork & warm-air appliances- for mechanical work to include the installation as per attached standards. deviations from these standards require submission of construction and site plans. each hvac unit to be self-contained within each dwelling unit. no penetrations of rated assemblies. *rooftop units permitted if included in building plans* install gas fired 80,000 btu warm air heater, a/c condenser (2.5 ton), and 14 diffusers. all work per e-z standard. combo with rp-2022-011813.
- Plumbing permit Jan 2023Completed
New fixtures and piping to include: 2 water cloaets, 2 lavatories, 3 shower/tub units, 1 kitchen sink, 1 laundry sink, 1 water heater,1 hose bib.
- Residential building permit Jan 2023Completed
For interior alteration and the erection of an addition with accessory roof deck and roof access structure as part of the existing structure to continuous use as single-family dwelling. the existing basement to remain non-habitable space. size and location as shown on the plans. ** separate permit require for electrical, plumbing and mechanical **
- Zoning permit Dec 2022Completed
For the erection of a third floor addition with a roof deck and roof access structure above. size and locations per plans.
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
7 within 1,650 ft
Nearest: Pgw Ninth & Diamond Transp Dept, 900-940 W Diamond St (1,500 ft), open. 3 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
1,200 ft
8th Diamond St Playground and 29 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
2,200 ft
York Metal Finishing Co and 2 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
500 ft
McKinley William Sch (500 ft), The U School: Innovative Lab (950 ft), Welsh John Sch (1,650 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.
- 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.
- 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.
- 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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