Cost per window by material
| Window type | Typical installed cost |
|---|---|
| Vinyl double-hung or slider | $650 – $1,400 |
| Fiberglass or composite | $1,000 – $2,200 |
| Wood-clad | $1,200 – $2,800 |
| Impact-rated (laminated) | $1,400 – $3,500 |
| Bay or bow window | $3,500 – $9,000 |
| Specialty shape | $900 – $3,000 |
Ranges reflect typical Charleston-area projects in 2026. Your written estimate is based on your actual openings.
Whole-house estimates
| Project | Typical range |
|---|---|
| 10 vinyl windows | $8,000 – $14,000 |
| 15 vinyl windows | $12,000 – $21,000 |
| 15 fiberglass or wood-clad | $17,000 – $36,000 |
| 15 impact windows | $25,000 – $55,000 |
What drives the price
- Material: vinyl costs least, wood-clad and fiberglass more.
- Impact rating: laminated glass and heavier frames add significantly.
- Size and style: large, operable and custom shapes cost more.
- Install type: full-frame replacement costs more than insert, especially when there is rot.
- Access: second and third floors and raised beach houses need more equipment.
- Historic requirements: matched profiles and divided lites add cost, and review adds time.
How to compare quotes
- Confirm whether the price is insert or full-frame for each opening
- Compare glass specs (SHGC and U-factor), not just brand names
- Ask who installs: employees or subcontractors
- Check what's included for trim, rot repair, permits and haul-away
- Get warranty terms in writing for both product and labor
Ways to save
- Replace in phases, starting with the worst openings
- Choose vinyl on secondary elevations and upgrade the street side
- Bundle windows and doors in one project to reduce trip and setup costs
- Ask about financing options
Common questions
What is the average cost to replace a window in Charleston?
Most homeowners pay $750 to $2,000 per window installed. Impact windows and wood-clad units run higher.
Is it cheaper to replace all windows at once?
Usually, yes. Per-window cost drops on larger orders because setup and travel are shared.
Are estimates free?
Yes. We measure, discuss options and leave a written estimate at no cost.
Where we work
We install windows across Charleston and nearby communities, including Downtown Charleston, West Ashley, James Island, Mount Pleasant, North Charleston, Daniel Island and more.