Nearly One in Four U.S. Remodelers Built an ADU in the Past Year; 62% of Projects Cost $150,000 or More, NAHB Finds
Accessory dwelling units (ADUs) have become significantly more common in U.S. remodeling work, according to survey results released November 2 by the National Association of Home Builders (NAHB) from its Remodeling Market Index (RMI). Nearly one in four remodelers surveyed reported starting an ADU project in the previous 12 months.
Some 24% of remodelers built ADUs as part of a newly constructed addition, and 23% created ADUs by remodeling an existing space, both up from when the questions were last asked in the first quarter of 2019. When deciding whether a project counts as an ADU, the most common criterion was a newly built detached structure, cited by 71% of remodelers, up 28 percentage points from 2019 and the largest increase; a separate entrance followed at 67% and a separate kitchen at 58%.
On cost, 62% of ADU projects cost $150,000 or more, more than double the share in 2019.
Regionally, ADU adoption was highest in the Northeast, where at least one-third of remodelers reported doing each type of ADU project; the West ranked next, at no less than 27% for each type; and the Midwest was lowest, at under 20% for both. NAHB noted that a number of states in the Northeast and West have relatively permissive ADU regulations, consistent with the pattern.
(Source: National Association of Home Builders)
Source: National Association of Home Builders
Published by GSM · USA (original Chinese edition)
Photo: 图：附属住宅单元（ADU）的常见形态示意，包括独立式、附属式、室内改造与车库改造。Joiedevivre123321 作，CC BY-SA 4.0，经 Wikimedia Commons。 / Diagram: Common ADU configurations, including detached, attached, interior-conversion and garage-conversion units. By Joiedevivre123321, CC BY-SA 4.0, via Wikimedia Commons.
