cost estimate trey ceilings
1 On average, plan on budgeting at least $2 to $4 per square foot to have a tray ceiling professionally installed. 2  The costs depending on the number of tiers, the shapes, angles and curves. 3  Per standard room, plan on spending around $800 to $1,500. According to builder Stantonhomes.com, tray ceilings as an upgrade generally costs around $1,000 for a very simple cut-out tray with no crown molding and no paint variation added.