Does this include energy rebates?

No. Subtract rebates/credits separately if you qualify.

What about repairing rot?

Not modeled. Add extra labor/materials or increase contingency if rot is likely.

Does it handle different window sizes?

Use an average cost per window. For wide variation, run separate scenarios.

Are trim/paint included?

Include them in labor or contingency if needed.

No. It’s a ballpark estimator for planning purposes only.

construction calculator

Window Replacement Cost Estimator

Estimate material, labor, and disposal costs for replacing windows with a simple per-window model.

Results

Materials cost: $6,500
Labor cost: $2,500
Disposal/haul cost: $350
Permits/inspection: $150
Contingency reserve: $950
Total project cost: $10,450
Cost per window: $1,045

How to use this calculator

Enter window count and per-window material/labor/disposal costs.
Add any permit fees and contingency percentage.
Review total and per-window costs.

Inputs explained

Material cost: Use your window type average (vinyl, fiberglass, wood, etc.).
Labor: Per-opening installation cost; adjust for complexity or trim work.

How it works

Materials, labor, and disposal scale by window count. Permits are a fixed line item.

Contingency is applied to the subtotal, then divided by window count for a per-window view.

Formula

Materials cost = Window count × Material per window
Labor cost = Window count × Labor per window
Disposal = Window count × Disposal per window
Subtotal = Materials + Labor + Disposal + Permits
Contingency = Subtotal × Contingency%
Total cost = Subtotal + Contingency
Cost per window = Total cost ÷ Window count

When to use it

Budgeting a window replacement project.
Comparing quotes vs DIY estimates.
Testing higher-end windows vs standard options.

Tips & cautions

Historic homes or custom sizes can push material and labor higher—adjust inputs accordingly.
If trim/paint is substantial, add it into labor or increase contingency.
Permits vary widely by jurisdiction; use your local fee.
Does not include energy rebates or tax credits.
Excludes structural reframing or water damage repair.
Per-window averages; actual unit-by-unit pricing will vary.

Worked examples

10 windows @ $650 material, $250 labor, $35 disposal, $150 permits, 10% contingency

Materials = $6,500; Labor = $2,500; Disposal = $350; Permits = $150
Subtotal = $9,500; Contingency = $950
Total ≈ $10,450; Cost per window ≈ $1,045

Deep dive

Estimate window replacement costs fast with materials, labor, permits, and contingency.

See total and per-window costs to benchmark quotes or DIY budgets.

FAQs

Does this include energy rebates?: No. Subtract rebates/credits separately if you qualify.
What about repairing rot?: Not modeled. Add extra labor/materials or increase contingency if rot is likely.
Does it handle different window sizes?: Use an average cost per window. For wide variation, run separate scenarios.
Are trim/paint included?: Include them in labor or contingency if needed.
Is this a quote?: No. It’s a ballpark estimator for planning purposes only.

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Planning estimate only. Actual window replacement costs vary by size, type, region, and installer.