Garland, TX Fence Regulations: Retaining Walls (2026)

Under the International Residential Code adopted by Garland, retaining walls 4 feet or higher (measured from the bottom of the footing to the top of the wall), and any retaining wall of any height that supports a surcharge load (such as a driveway, patio, or sloped fill), require a building permit and an engineered design stamped by a Texas-licensed professional engineer. Retaining walls under 4 feet without surcharge typically do not require a permit but must still be properly designed for soil conditions, drainage, and lateral loads. Tiered walls separated by less than twice the height of the lower wall are treated as a single combined-height wall for permit purposes. Drainage behind the wall (gravel backfill and weep holes or perforated drain pipe) is essential to prevent hydrostatic pressure failure. Walls within drainage easements or near property lines require additional review. Failed or leaning retaining walls are a property maintenance violation and must be repaired or replaced promptly.