Home Additions in Delaware County, PA
Inner-ring Delaware County lots are tight, so most additions here go up or out the back rather than to the side. Setbacks and lot coverage are the first numbers we check for your municipality. We handle the drawings, the local permits and the build, and price your project at a free on-site walkthrough.
Build your estimateHome additions for Delaware County homes
Delaware County mixes 1920s stone twins, post-war ranches and split-levels, and newer developments toward Glen Mills.
- Second-story additions over existing footprints where the original footings can carry them.
- Rear additions tied into the existing roof line so they look original to the house.
What affects projects in Delaware County
- Each of the county's townships and boroughs runs its own permits, so we confirm the right office from your address first.
- Older inner-ring lots are tight, which makes setbacks and lot coverage the first things we check.
We know the county's housing stock
Delaware County is a patchwork of eras: 1920s stone and stucco twins in Drexel Hill and Havertown, mid-century ranches and split-levels in Springfield and Broomall, Victorian borough homes in Media and Swarthmore, and newer developments out toward Glen Mills and Garnet Valley. Each one fails and flexes differently — plaster and lath, balloon framing, knob-and-tube leftovers, undersized footings, or slab-on-grade additions that never tied into the original structure. We plan for what's actually behind the wall instead of discovering it halfway through.
Permits & local rules in Delaware County
Plans are reviewed by the building department of your specific Delaware County township or borough. We file and track every permit for you.
- Step 1. Zoning review: setbacks, lot coverage and height limits set by Delaware County's local zoning rules.
- Step 2. Building permit filed with the township or borough code office serving Delaware County (Pennsylvania Uniform Construction Code), using our in-house drawings.
- Step 3. Zoning variance hearing if the addition exceeds setback or coverage limits.
- Step 4. Stormwater review when new roof or paved area crosses the local threshold.
- Step 5. Footing, framing, rough-in, insulation and final inspections.
Exact requirements depend on your property. We confirm them with the local office at your walkthrough.
How your home addition gets built
Every step, start to finish, handled by one design-build crew.
- 1Week 1
Site visit
We review lot lines, zoning, and how the addition ties in.
- 2Weeks 2–10
Drawings & zoning
In-house plans, engineering, and township approvals.
- 3Weeks 10–13
Foundation
Excavation, footings, and foundation walls.
- 4Weeks 13–17
Framing & roof tie-in
Walls, roof, windows, and weather-tight shell.
- 5Weeks 17–20
Rough-in & insulation
Electric, plumbing, HVAC, inspected before drywall.
- 6Weeks 20–26
Finishes & occupancy
Interior finishes, siding matched to the house, final permit.
Build your home addition estimate in Delaware County
Your project scope and material selections help us prepare for your free on-site walkthrough.