Are ADUs or in-law suites allowed in Rochester Hills?

Chapter 138 does not provide a separately named ADU entitlement. Under § 138-4.105, an unlisted use is prohibited unless determined similar to a listed permitted use. Do not assume a detached ADU or garage apartment is allowed on a one-family lot; obtain the City’s classification for the actual layout. This is a use-classification conclusion, not an express ADU-specific ban.

Bedroom or kitchen facilities remaining part of the principal single-family dwelling and not forming a separate dwelling are allowed under § 138-10.301. A separate basement dwelling is expressly prohibited. Rezoning or a use variance may be possible only through the applicable prerequisites and findings; neither is automatic (§ 138-2.408).