One of the first questions homeowners ask before upgrading their home is: what does it actually cost? Skylight installation cost in Toronto varies depending on several factors — the type of skylight, the complexity of the installation, and the condition of your existing roof. Here's a straightforward breakdown so you can budget with confidence.

Typical Price Ranges for Skylight Installation in Toronto

As a general guide, Toronto homeowners can expect to pay:

  • Sun tunnel skylight — $800 to $1,500 installed. The most affordable way to bring natural light into a compact space with minimal structural work.
  • Fixed skylight (standard size) — $1,500 to $3,000 installed. A sealed unit, no ventilation, ideal for living areas and hallways.
  • Venting skylight (manual) — $2,000 to $3,500 installed. Opens for fresh air, suited to kitchens and bathrooms.
  • Electric or solar-powered venting skylight — $3,000 to $5,500 installed. Motorised operation, rain sensors, and smart home compatibility add to both cost and convenience.
  • Flat roof skylight — $2,500 to $5,000+ installed, depending on size and curb requirements.

These ranges reflect supply and labour in the Greater Toronto Area and will shift based on the specific factors below.

What Affects the Cost of Skylight Installation in Toronto?

Skylight type and size — Larger units and venting or motorised models cost more than small fixed skylights. A custom-sized opening adds fabrication and labour time.

Roof pitch and accessibility — Steeper roofs require additional safety equipment and take longer to work on safely. Flat or low-slope roofs may need a raised curb for proper drainage, adding material and labour costs.

Light shaft construction — If there's attic space between the roof and ceiling, a shaft needs to be built and finished to channel light into the room. Straight shafts are cheaper; angled or splayed shafts that widen toward the ceiling cost more but deliver more light.

Existing roof condition — If the surrounding decking shows rot or moisture damage, it needs to be repaired before the new skylight goes in. A good contractor will flag this during the inspection rather than after opening up the roof.

Interior finishing — Drywall, paint, and trim around the new ceiling opening are sometimes quoted separately. Always confirm whether your quote is fully inclusive.

Brand and glazing quality — Premium brands with insulated, low-E coated glass cost more upfront but perform better across Toronto's freeze-thaw seasons and reduce long-term energy costs.

New Installation vs. Replacement Cost

Replacing an existing skylight is typically less expensive than a new installation because the roof opening already exists. The main costs involve removing the old unit, inspecting and repairing the surrounding flashing and decking if needed, and fitting the new unit. Expect $1,200 to $3,500 for a straightforward replacement, depending on skylight type and condition of the existing opening.

A brand-new installation — where no opening currently exists — involves cutting the roof, framing, weatherproofing, and interior finishing, which is why costs run higher.

Is Skylight Installation Worth the Cost in Toronto?

For most homeowners, yes. A well-installed skylight adds natural light that genuinely improves daily living, can reduce daytime electricity use, and enhances the visual appeal and market value of the home. In Toronto's competitive real estate market, bright interiors consistently attract buyer attention.

The key is getting an itemised, transparent quote from a reputed skylight specialist — not a general roofer — so you know exactly what's included and can compare fairly.