1. How much does a pool enclosure cost? The answer depends on many factors (see post here)but the short answer is between $7.50 and $10.00 per square foot of deck are for an all screen enclosure, assuming a typical span and connection to the home and no extreme wind or snow loads.allcustomaluminum.com. Also, feel free to visit our online screen, patio, and pool enclosure buyers guide. Its a 68 page portfolio of our products and services filled with information, pictures, and ideas sure to be of interest to anyone contemplating an outdoor living project. Just click the link below.