2010 ADA Standards for Accessible Design Pocket Guide
18.104.22.168 Alterations to Individual Residential Dwelling Units.
In individual residential dwelling units, where a bathroom or a kitchen is substantially altered, and at least one other room is altered, the requirements of 233.3.1 shall apply to the altered residential dwelling units until the total number of residential dwelling units complies with the minimum number required by 22.214.171.124 and 126.96.36.199. Residential dwelling units required to comply with 188.8.131.52 shall be on an accessible route as required by 206.
EXCEPTION: Where facilities contain 15 or fewer residential dwelling units, the requirements of 184.108.40.206 and 220.127.116.11 shall apply to the total number of residential dwelling units that are altered under a single contract, or are developed as a whole, whether or not located on a common site.
Advisory 18.104.22.168 Alterations to Individual Residential Dwelling Units. Section 22.214.171.124 uses the terms “substantially altered” and “altered.” A substantial alteration to a kitchen or bathroom includes, but is not limited to, alterations that are changes to or rearrangements in the plan configuration, or replacement of cabinetry. Substantial alterations do not include normal maintenance or appliance and fixture replacement, unless such maintenance or replacement requires changes to or rearrangements in the plan configuration, or replacement of cabinetry. The term “alteration” is defined both in Section 106 of these requirements and in the Department of Justice ADA regulations.