South Carolina · Exterior
Impact Window Installation cost in South Carolina
Statewide pricing, permit posture and inspection sequence for impact window installation in South Carolina. Your city or county issues the actual permit — use the local links below to confirm fees.
Verified August 2026
Impact Window Installation cost in South Carolina
$8,300 – $38,600
Most South Carolina homeowners pay around $17,000, or $600–$1,750 per window installed. Permit fees typically add $135–$630.
Permit: Yes. South Carolina Residential Code, based on the IRC
Cost breakdown
| Budget scope | $8,300 |
|---|---|
| Typical project | $17,000 |
| Premium / complex | $38,600 |
| per window installed | $600 – $1,750 |
| Permit fees | $135 – $630 |
| vs national baseline | -8% |
| Timeline | 1-3 days of installation, 3-8 weeks including product lead time and permitting |
What is different about impact window installation in South Carolina
Charleston and Horry County enforce coastal wind and elevation rules plus historic review; upstate Greenville prices and permits like the interior Southeast.
Owner-builder: Homeowner permits allowed on owner-occupied property. Impact Window Installation generally requires a licensed contractor to pull the permit, even where owner-builder status is available.
Inspections
- Window buck / opening inspection
- Installation and attachment
- Final inspection
What drives the price
- Number and size of openings
- Design pressure rating required for your wind zone
- Aluminum versus vinyl frames
- HVHZ product approval requirements in Miami-Dade and Broward
- Stucco and drywall patching after installation
Frequently asked questions
Do impact windows need a permit in Florida?
Yes. Replacing a window changes an opening protection assembly, so every Florida jurisdiction requires a permit with product approval numbers and attachment details for each unit.
Do impact windows lower insurance?
Florida requires insurers to offer wind mitigation discounts for approved opening protection. Have a wind mitigation inspection done after installation so the credit is applied.
Sources
Sources & verification
Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.