Most single piece artwork including decorative metals glass woods and even some small single piece shelving can take less than an hour so I usually recommend doing them at once of you have multiple pieces for better value.
Flat screens usually take an 90 min with fishing all the cabling behind the wall and installing a power outlet directly behind the screen. If you just want it mounted no cable management expect 1 hour .
All installed and mounted items include best practices to dispose of waste in environmentally sound green fashion, and are installed to manufacturers specifications to insure full product warranty coverage.
All menu items reflect typical circumstances, pricing may vary.