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Rendering: Fiberglass Bay Window at the Premium level: 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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How Much Does Fiberglass Bay Window Cost in Washington, District of Columbia?

Replace or install one fiberglass bay window unit (three-panel projection), including installation, trim and support.

Fiberglass Bay Window in Washington, District of Columbia typically costs $2,616 to $6,279 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 Washington, District of Columbia

$2,616 – $6,279

each

Prices in Washington are 5.0% higher than the national average for fiberglass bay window.

National average: $2,500 – $6,000 each

What you get at each price level

  • Basic

    $2,224 – $5,337 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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  • Standard

    $2,616 – $6,279 each

    Fiberglass bay with fixed center and two double-hung flankers, tan frames, low-E argon glass, insulated seat, cable support, primed boards

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  • Premium

    $3,270 – $7,849 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 Washington

ComponentCategoryPrice RangeUnit
Materialsmaterial$1,181 – $2,835each
Laborlabor$910 – $2,184each
Supplies & Othersupplies$315 – $756each
Equipment & Disposalequipment$210 – $504each
Prices adjusted for Washington local market conditions.

Cost Factors in Washington, District of Columbia

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 costs5.0% above avg
Labor costs4.0% above avg

Frequently Asked Questions

References

Get Free Estimates in Washington

Connect with local fiberglass bay window contractors in Washington for personalized quotes based on your specific project.

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More Cost Intelligence for Washington

Fiberglass Bay Window: national cost guideAll Washington cost guides

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