Basic
$2,326 – $5,582 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 Boston, Massachusetts?
Replace or install one fiberglass bay window unit (three-panel projection), including installation, trim and support.
Fiberglass Bay Window in Boston, Massachusetts typically costs $2,736 to $6,567 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 Boston, Massachusetts
$2,736 – $6,567
eachPrices in Boston are 14.0% higher than the national average for fiberglass bay window.
National average: $2,500 – $6,000 each
What you get at each price level
Standard
$2,736 – $6,567 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
$3,420 – $8,209 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
Rendering: BuildX
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Cost Breakdown in Boston
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1,125 – $2,700 | each |
| Labor | labor | $1,111 – $2,667 | each |
| Supplies & Other | supplies | $300 – $720 | each |
| Equipment & Disposal | equipment | $200 – $480 | each |
Prices adjusted for Boston local market conditions.
Cost Factors in Boston, Massachusetts
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 costsAt national average
Labor costs27.0% above avg
Labor costs in Boston run proportionally higher than materials, which may favor material-heavy solutions.
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
Get Free Estimates in Boston
Connect with local fiberglass bay window contractors in Boston for personalized quotes based on your specific project.