Centennial regulates detached carports under Land Development Code Section 12-3-603 as accessory structures. Detached carports serving attached single-family or multifamily dwellings must be set back at least 20 feet from a building setback line on adjacent lots of a different dwelling type. General accessory structures have 5-foot rear and interior side setbacks and a 17-foot height cap.
Under Centennial's Land Development Code Section 12-3-603 (Chapter 12, Article 3), detached carports are treated as accessory structures and must be subordinate to the principal building on the lot. The principal residence must exist (or be built simultaneously) before the carport. Standard accessory structure setbacks apply: 5 feet from interior side and rear property lines, behind the principal building for the front, and matching the principal building's street side setback. Height is limited to one story or 17 feet, whichever is lower. Footprint cannot exceed the principal building's area, nor cover more than 25 percent of the required rear yard or 600 square feet, whichever is less. A specific rule applies to detached carports and garages serving attached single-family or multifamily dwellings: they must not be located closer than 20 feet to a building setback line on an adjacent lot that is not used for the same dwelling type. Building permits issued through Arapahoe County's inspection program (per Centennial's intergovernmental arrangement under Chapter 18) are required for permanent carport construction. Utility easements must remain unobstructed.
Carport built without permit: stop-work order and after-the-fact permit fees. Setback or height violation: removal or relocation order. Encroachment into easement: required removal at owner's expense.
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