What is an "ADU"?
An ADU, sometimes called a "granny flat" or "in-law apartment," is an independent living unit ancillary to a single-family dwelling unit and under the same ownership as the principal dwelling unit. The ADU may be attached (located within or attached to the single-family home), or detached (a free-standing structure or located within a detached accessory building on the property).
ADUs are allowed on any lot with a single-family home
In 2023, the City of Keene updated regulations governing accessory dwelling units, or "ADUs" to make it easier to build one in the city. ADUs are now de-coupled from zoning and are allowed by right on any lot in the city with a single-family home.
