Skylight installation in Suffolk County typically ranges from $1,500 to $4,500 depending on size, type, and roof complexity. Fixed skylights cost less than vented models, and installation on simple roof slopes costs less than complex rooflines. The biggest cost variable is whether you choose a contractor who does it right the first time or one who cuts corners. Cheap installation often means expensive repairs later when leaks develop. We provide detailed written estimates that break down materials, labor, and any additional work needed. No surprises, no hidden costs—just transparent pricing for professional installation that won’t cause problems down the road.