Amarillo, TX Fence Regulations: Retaining Walls (2026)

Both of Amarillo's adopted construction codes exempt short retaining walls from a permit using nearly identical language. 2, item 4) uses the same 4-foot, footing-to-top measurement but adds a second trigger: the exemption is lost if the wall impounds a Class I, II, or IIIA liquid, categories covering gasoline, diesel, and similar flammable or combustible fuels. Measuring from the bottom of the footing rather than from finished grade matters on a sloped Panhandle lot, because a wall that looks like 3 feet of exposed face can carry a buried footing that pushes the total height over the 4-foot line once the footing is counted, pulling the wall into permit territory even though little of it is visible above ground.

A 'surcharge' in this context means any load bearing down on the soil behind the wall beyond the soil's own weight, such as a driveway, a parked vehicle, a swimming pool, or a structure built close to the top of the slope; any of those loads triggers the permit requirement regardless of the wall's height. A wall that needs a permit under either code also needs submittal documents sealed by a Texas-licensed engineer once its size or site conditions call for one under Section 4-3-1's design-professional rules.