Basic
$1,973 – $4,735 each
Fiberglass bay with fixed center and two double-hung flankers, white frames, low-E double-pane glass, insulated seat, cable support, primed boards
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How Much Does Fiberglass Bay Window Cost in Charleston, South Carolina?
Replace or install one fiberglass bay window unit (three-panel projection), including installation, trim and support.
Fiberglass Bay Window in Charleston, South Carolina typically costs $2,321 to $5,571 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Fiberglass Bay Window in Charleston, South Carolina
$2,321 – $5,571
eachPrices in Charleston are 8.0% lower than the national average for fiberglass bay window.
National average: $2,500 – $6,000 each
What you get at each price level
Standard
$2,321 – $5,571 each
Fiberglass bay with fixed center and two double-hung flankers, tan frames, low-E argon glass, insulated seat, cable support, primed boards
Rendering: BuildX
Find a pro to do thisPremium
$2,902 – $6,964 each
Fiberglass bay with fixed center and two double-hung flankers, dark exterior frames, low-E argon glass, wood-look interior finish, insulated seat, cable support
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Cost Breakdown in Charleston
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1,080 – $2,592 | each |
| Labor | labor | $761 – $1,827 | each |
| Supplies & Other | supplies | $288 – $691 | each |
| Equipment & Disposal | equipment | $192 – $461 | each |
Prices adjusted for Charleston local market conditions.
Cost Factors in Charleston, South Carolina
What Affects Pricing
- Materials ($1,125.00-$2,700.00 per unit)
- Labor ($875.00-$2,100.00 per unit)
- Supplies & Other ($300.00-$720.00 per unit)
- Equipment & Disposal ($200.00-$480.00 per unit)
Local Price Adjustments
Material costs4.0% below avg
Labor costs13.0% below avg
Material costs in Charleston run proportionally higher than labor, which may favor labor-intensive approaches.
Frequently Asked Questions
References
- Pella: Bay Window Replacement, pella.com, retrieved Nov 2026
- Windows by Toll: Bay Window Replacement Costs, windowsbytoll.com, retrieved Nov 2026
- EcoWatch: Bay Window Cost 2026, ecowatch.com, retrieved Nov 2026
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
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Connect with local fiberglass bay window contractors in Charleston for personalized quotes based on your specific project.