Storage Sheds & Backyard Buildings Near Red Oak, TX

Inside Red Oak city limits: every accessory building needs a permit and plan review, with two site plans showing distances to the house and lot lines plus a foundation or support plan. All portable buildings must be tied down regardless of size. Buildings go behind the house, one story, up to three per lot and 10 ft apart, with a 650 sq ft maximum. Over 200 sq ft, they must match the neighborhood's architecture, use materials similar to the house, and be underpinned or on a slab.

Outside city limits (unincorporated Ellis County): Ellis County has required permits outside city limits since the late 1970s. Sheds, barns, and storage buildings of 300 sq ft or more need a county development permit ($75), filed online through MyGovernmentOnline with a site plan or survey and a basic floor plan; one accessory building under 300 sq ft per property is exempt from the fee. A cabin used as a dwelling is a habitable permit ($350) and needs a septic application. Buildings stay 25 ft from local road right-of-way (50 ft on major roads), floodplain sites add $200 and likely an elevation certificate, and permits usually take 5–7 business days. Department of Development: 972-825-5200.

Adding plumbing? New septic (OSSF) systems are $600 through the same department.