How much will it cost to have my pet door installed? Installation prices will vary, depending on installation location and materials. For instance, getting a PlexiDor installed in a house door usually ranges between $200-$350. Wall installations – depending on wall material – normally range between $400-$1600. Wood studs are lower cost than concrete walls. Other conditions can influence the installation price. Electrical outlets, wiring, plumbing, air ducts, and similar can create extra work that will bump up the price – or make the intended location unsuitable. When dealing with wall installations, it’s a good idea to choose a backup spot, just in case the favorite choice turns out to hide something in the wall that can’t be moved.