Skylight Installation Cost 2026

CostMyProject Research Team Prices checked October 2026

A professional skylight installation averages $1,920 per skylight in 2026 (Angi, across 1,577 verified projects), with most homeowners paying between $1,014 and $2,828. Broader contractor datasets push the national average closer to $2,900, with most projects at $1,600–$4,200 — the spread is driven by skylight type, size, roof material, and whether you're cutting a new opening or replacing an old unit. This guide prices fixed, venting, and tubular skylights, breaks out labor, and flags the roof-type adders that surprise people on quotes.

Skylight installation cost by type (2026)

Type is the single biggest cost driver, and the installed ranges above (drawn from HomeGuide, HomeAdvisor, and This Old House data) tell you why: a tubular unit needs a 10–14 inch roof hole and a reflective tube, while a fixed skylight needs a framed curb, a flashing kit, a roof cut, and a finished drywall light shaft below. Every step you add — framing, flashing, wiring, finishing — is labor, and labor is the majority of most skylight quotes. The skylight unit itself typically runs $150–$2,000 depending on type and size.

What the skylight unit itself costs

Glazing moves these numbers more than the type label suggests. Lightweight acrylic domes are cheapest but scratch and yellow over time; tempered or laminated glass units run $300–$2,000 and hold up far better. Energy options — double-pane with argon fill and Low-E coatings — cost more up front and filter summer heat gain while reducing winter heat loss. Frame material matters too: vinyl is cheapest, with wood and metal frames priced higher. When a quote's unit line looks odd, check glazing and frame before comparing — a $900 Low-E glass fixed skylight and a $250 acrylic dome are not the same product.

Labor: what the installer charges

Installation labor typically runs $1,200–$3,200 for a standard skylight, and it routinely exceeds the cost of the unit itself. What that labor buys: cutting the roof deck and framing the opening, building or setting the curb, integrating the manufacturer flashing kit with your roofing, installing and wiring the unit, and — on finished ceilings — framing and drywalling the light shaft from roof to ceiling. Most skylight jobs take half a day to three days depending on ceiling type and how much interior finishing is included. Rule of thumb from Angi's 2026 data: budget $150–$300 per square foot of skylight for the complete installed job.

Cost by size

Standard sizes (2×2 and 2×4 are the common US stock sizes) are meaningfully cheaper than custom — the flashing kits, curbs, and replacement parts all exist off the shelf. Oversized units can trigger structural work: larger openings need additional framing or reinforcement, which is the quiet reason some quotes jump. If you're choosing between two sizes, remember the light shaft math too — a small skylight through a deep attic shaft delivers less light than a medium one, so upsizing the unit is often better value than adding a second skylight.

Your roof type changes the price

Angi's 2026 data is explicit on this: your roof material and pitch determine installation complexity, and tile and metal roofs cost extra in labor over flat or shingle roofs. Cutting into tile means removing and replacing individual tiles around the curb without cracking them; metal roofing needs custom flashing transitions that shingles don't. Steep pitches add scaffold or harness time and slow every step. Flat roofs are the simplest penetrations but need the flashing detail exactly right since water doesn't run off as fast. When comparing quotes, the roof-type line is the most legitimate reason two quotes for the same skylight differ by $500+.

New installation vs. replacing an old skylight

Replacement is the better deal whenever the existing curb and flashing are sound — you're paying for the unit plus a swap, not for carpentry and roofing. But don't reuse a failing curb to save money: if the roofer finds soft decking or corroded flashing under the old skylight, fixing it now is cheaper than fixing it after the first big rain. Most replacement projects land at the low end of the typical $1,014–$2,828 range, depending on size and type.

Permits, flashing kits, and the interior finish

Two of these are the classic quote-surprise items. The interior finish is the first: many roofing quotes cover the roof side beautifully and stop at the ceiling plane, leaving you to drywall, tape, and paint the shaft yourself. The second is the flashing kit: skylight manufacturers sell flashing engineered for specific roof materials, and it's the part that actually keeps water out. Generic step flashing "we'll make it work" is how skylights get their leaky reputation.

DIY vs. pro: the honest line

This is a pro-dominant job, and the data backs the caution: you're cutting a hole in the only thing keeping weather out of your house. The labor looks expensive until you price the alternative — water intrusion from a failed DIY penetration routinely costs five figures to remediate once you count roof repair, drywall, and mold. Even the friendlier tubular kits penetrate the roof and need correct flashing. If a contractor is VELUX-certified or equivalent, that certification is worth something: manufacturer warranties on skylights frequently assume certified installation.

Full budget: 2×4 fixed skylight, asphalt shingle roof

This is the most common real-world job: one standard-size fixed skylight cut into an asphalt shingle roof with a finished ceiling below. The low end is a simple roof (walkable pitch, easy attic access, one-day job); the high end is a steep pitch with a deep light shaft and a pricier municipality. Budget around $2,500 for this exact job and you'll usually land within a few hundred dollars — which sits right at the middle of the national data.

How to keep the cost down

Right-size the type. If you only want light in a dark hallway, a $500–$1,000 tubular unit does the job a $3,000 fixed skylight would — no curb, no shaft, half-day install. Coordinate with a roof replacement. If your roof is more than 15 years old, doing the skylight during a re-roof lets one crew integrate the flashing with new roofing in a single mobilization — the cheapest flashing you'll ever buy. Stick to stock sizes. 2×2 and 2×4 units use off-the-shelf curbs, flashing kits, and shades; custom sizes price everything up. Go solar over electric for venting when the wiring run is long — you skip the $150–$400 electrical run entirely. And get three quotes with the roof type stated: tile and metal roofs legitimately cost more, but the spread between quotes on the same shingle roof tells you who's padding.