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Everything you need to know about electrical in Philadelphia, PA — average costs, local considerations, and tips for choosing the right professional.
Philadelphia has the oldest housing stock of any large American city. A great deal of it was wired before 1930, some of it has never been rewired, and almost all of it was designed for a fraction of a modern household's electrical load.
Pennsylvania does not license electricians at state level. In Philadelphia that authority sits with Licenses and Inspections (L&I).
Verify both. L&I licence status is searchable, and HIC registration numbers can be checked with the Attorney General's office. A contractor without a PA HIC number doing residential work over $500 is operating outside the law.
Permits are required for new circuits, panel replacements, service changes and any alteration to the electrical system. L&I inspection is your independent check that the work was done correctly, and it is worth having.
In most cities knob-and-tube is a curiosity. In Philadelphia it is a routine finding.
What it is: ungrounded two-wire circuits with conductors run separately through ceramic knobs and tubes, insulated in rubber and cloth. It was installed roughly 1890-1940 and it depended on open air around the conductors to dissipate heat.
Why it is a problem now:
What to do: partial rewiring is possible where knob-and-tube serves only a few circuits, but in a house where it is widespread, a full rewire is the honest answer. Budget for plaster repair as a separate and substantial line item.
Sixty-amp services are still in service in Philadelphia rowhomes. Some are still fused rather than breakered.
A 60-amp service was adequate for lighting, a refrigerator and a radio. It is not adequate for central air, an electric dryer, a modern kitchen, a heat pump or an EV charger. The symptoms are nuisance breaker trips, lights dimming when the compressor starts, and an inability to add anything.
A 200-amp service upgrade runs $2,500-$5,000 in Philadelphia including the permit and PECO coordination. Where the service entrance runs up a party wall or the meter is in an awkward location, it costs more.
Obsolete panels to watch for:
None of these is repairable. All are replaced.
| Job | Philadelphia Range | National Average |
|---|---|---|
| Service call | $90 - $175 | $75 - $150 |
| Replace outlet or switch | $130 - $275 | $120 - $250 |
| Add dedicated circuit | $450 - $1,100 | $500 - $900 |
| Panel replacement, same amperage | $1,600 - $3,200 | $1,300 - $2,500 |
| Service upgrade to 200 amp | $2,500 - $5,000 | $2,000 - $4,000 |
| Full rewire, rowhome | $12,000 - $25,000 | $8,000 - $20,000 |
| Plaster repair after rewire | $3,000 - $8,000 | $2,000 - $6,000 |
| Knob-and-tube partial removal | $3,000 - $9,000 | $2,500 - $8,000 |
| Level 2 EV charger | $900 - $2,200 | $700 - $1,800 |
This deserves its own warning because it catches people every year.
Philadelphia rowhomes lose an enormous amount of heat, and energy programmes encourage insulation. If your house has active knob-and-tube, the wiring has to be dealt with first. Burying it in insulation is a genuine fire risk, not a technicality, and a reputable insulation contractor will refuse the job until an electrician has cleared it.
The correct sequence is: electrical assessment, rewire what needs rewiring, then air seal and insulate.
Need help planning your electrical project in Philadelphia, PA? Reach out and we will point you in the right direction.