Skylight Installation Cost Calculator
Estimate the cost of installing a skylight or sun tunnel based on type, size, and your location.
A skylight installation costs $1,200 to $3,500, with a national average of $2,200. Use the calculator below to estimate your cost by size, quality tier, and location.
Last updated: March 25, 2026
Skylight Installation Cost Calculator
Estimate the cost of installing a skylight or sun tunnel based on type, size, and your location.
Estimated Total
$2,000
Itemized Breakdown
This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.
Want the full picture?
Read our complete Skylight Installation cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.
Quick Cost Reference
Cost by Tier
Fixed curb-mount skylight, standard dual-pane glass, basic flashing kit
Venting deck-mount skylight with Low-E glass, integrated flashing, solar-powered blind
Large electric venting skylight or sun tunnel, triple-pane glass, light shaft through attic, remote control
How This Calculator Works
This skylight installation cost calculator estimates your total project cost from four inputs: project size, quality tier, the options you select, and your location. It combines material and labor rates for your chosen tier, adds typical permit costs, then applies a regional cost multiplier so the estimate reflects pricing in your state.
Estimates use 2026 cost data cross-referenced from multiple industry sources. Treat the result as a planning range, not a quote. Your final price depends on your specific scope, material choices, and local contractor availability, so collect at least three itemized bids before you set a budget.
What Affects Your Skylight Installation Cost
Skylight Type
$200 - $1,500Fixed skylights are the most affordable at $200-$500 for the unit. Manual venting models run $400-$800. Electric or solar-powered venting skylights cost $700-$1,500. Tubular sun tunnels are $200-$600.
Roof Access & Pitch
$0 - $800Easy-access roofs with moderate pitch (4/12 to 8/12) are straightforward. Steep roofs, multi-story homes, or tile/slate roofs add $300-$800 in labor due to safety equipment and complexity.
Light Shaft Construction
$0 - $1,500If the skylight opens directly into a vaulted ceiling, no shaft is needed. For homes with attic space, building a drywall light shaft from the roof to the ceiling adds $500-$1,500 depending on depth.
Flashing & Waterproofing
$100 - $400Proper flashing is critical. Manufacturer-specific flashing kits cost $100-$200. Step flashing for tile or shake roofs runs higher at $200-$400. Cutting corners on flashing is the primary cause of skylight leaks.
Interior Finishing
$100 - $500Drywall finishing around the skylight opening, painting, and trim work adds $100-$300. If you add a diffuser panel or built-in shade, plan for $100-$500 more.
Frequently Asked Questions
How much does a skylight installation cost?
A skylight installation costs $1,200 to $3,500 for a typical project, with a national average of $2,200. Budget projects start around $800, and premium work can reach $5,500. Use the calculator above for an estimate matched to your size, quality tier, and state.
How does this skylight installation cost calculator work?
It combines 2026 material and labor rates for your selected quality tier, adds typical permit costs and any options you choose, then applies a cost multiplier for your state. Adjust the inputs to see your estimate update instantly.
Is this calculator free to use?
Yes. This skylight installation cost calculator is free, requires no signup, and returns instant estimates.
Does the estimate include labor and permits?
Yes. Each estimate combines material and labor costs for your chosen quality tier plus typical permit fees. Your final price still depends on your specific scope and local contractor rates, so collect itemized quotes before budgeting.
How can I lower my skylight installation cost?
Choose a fixed skylight over venting if you don't need ventilation - save $200-$1,000 per unit Consider a tubular sun tunnel for $200-$600 installed vs. $1,200+ for a traditional skylight
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