It can cost anywhere from a few hundred dollars to over $1,000, depending on the size and complexity of the installation. Skylights are generally categorized by their size: small, medium, or large. A small skylight might be around 16"x16", a medium skylight might be around 28"x28", and a large skylight might be around 44"x44". The main costs of installing a skylight will come from the labor required to cut through the roofing material and install the flashing and roof window. There may also be additional costs if the installer needs to reinforce the roof structure to support the added weight of the skylight.

It can cost anywhere from a few hundred dollars to a few thousand dollars, depending on the size and complexity of the skylight. If you're hiring a contractor, they will likely charge by the hour, so it's important to get estimates from several different contractors before deciding on one. Additionally, many homeowners choose to install skylights themselves, which can be a cost-effective option if you're handy and comfortable with home repairs.