Additions - To Existing Structure Cost in Philadelphia, PA in 2026
Most Additions - To Existing Structure projects in Philadelphia, PA cost between $56,000 and $260,000. The typical price is $120,000.
Labour and materials in Philadelphia run about 12% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Whether the addition needs its own foundation and roof tie-in
- Adding a bathroom or kitchen (plumbing and electrical runs)
- Structural work to the existing wall being opened up
- Local permit and inspection requirements
Usually included
- Framing, roofing and siding to match
- Electrical rough-in and finish
- Insulation, drywall and paint
- Flooring and trim
Usually extra
- Permits and architectural drawings
- Site work or tree removal
- High-end fixtures and appliances
Unit prices in Philadelphia, PA
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $140 |
| Mid-range | $305 |
| High-end | $650 |
Home addition and remodeling contractors in Philadelphia, PA
Businesses listed on Google near Philadelphia, PA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Shahab Remodeling
4.9(147 reviews)
727 Claire Rd, Philadelphia, PA 19128
Noam Construction - Philadelphia
4.9(108 reviews)
4662 Kingsessing Ave A, Philadelphia, PA 19143
Nu-View Construction
4.8(107 reviews)
1401 Spruce St #916, Philadelphia, PA 19102
PHS General Contractor Philadelphia
5.0(73 reviews)
1525 W Girard Ave, Philadelphia, PA 19130
Home Renovations
4.8(65 reviews)
3544 Sunnyside Ave, Philadelphia, PA 19129
NK Construction and Design
4.8(63 reviews)
1324 Locust St, Philadelphia, PA 19107