Up to 60% of the rear yard, if the water behaves
Centennial's code lets a patio cover up to 60 percent of the rear yard, provided it is designed not to send more stormwater onto neighboring properties than the yard did before. That makes the slab's fall, and where its water ends up, a code requirement rather than a nicety. We look at the fall and the runoff path on site before pricing the job.
