UNDERSTANDING THE REGULATIONS
If your property was built in 1991 or later and contains more than four units, threshold heights, especially at unit entries and interior doors, are tightly regulated under the Fair Housing Act (FHA). Unlike features such as grab bars, thresholds are never considered “adaptable features.” They are fixed accessibility requirements, and for good reason.
• Primary and Secondary door thresholds are generally allowed up to 3/4” in height, if beveled, with a vertical rise of no more than 1/4” (See below). • A preferable threshold for primary entrances is 1/2” (See below). • In certain regions, such as coastal areas, there may be a greater differential of up to 1-1/2” between the exterior landing and interior floor, but slopes must not exceed 1:2 or 1/8” per foot (See below). • Any change in level greater than ½”, or ¾” at entries, is not permitted unless a ramp is installed at a 1:12 slope • Local and national codes may impose even stricter requirements—always check for the latest standards.
MORE THAN A TRANSITION: THRESHOLDS AND RESIDENT WELL-BEING Thresholds are more than just a transition between spaces. For residents using wheelchairs, walkers, or pushing strollers, a poorly designed threshold can be a daily obstacle. Even minor height differences can create trip hazards, impede mobility, and erode the comfort and independence residents deserve.
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