Patio, Sliding, and French Door Costs Compared (2026)
The ranges
Sliding glass doors run about $600-$5,000 installed depending on size and panels. Exterior French doors run $1,300-$5,500. Recent 2026 data puts basic patio-door installs around $1,017-$1,551 and French-door installs around $1,712-$2,617 per door.
Sliding vs French
Sliding (gliding) doors save space and cost less, ideal for tight patios. French doors swing open for a wider, more traditional opening but cost more and need clearance. Multi-panel and folding 'moving glass walls' are the premium tier.
Glass matters
Because these doors are mostly glass, a Low-E insulated package is essential to control heat gain and keep the room comfortable.