Victorville, CA Accessory Structures: Garage Conversions (2026)

030(a)(4) sets the Attached Accessory Dwelling Unit Development Standards that apply on top of the section's general ADU standards in subsection (a)(3). Item (i) caps the converted or newly built attached unit at 850 square feet for a unit with one bedroom or less and 1,000 square feet for a unit with more than one bedroom. Item (ii), the garage-conversion rule, removes the setback requirement entirely for an existing garage or living area inside the primary dwelling that becomes an ADU, and limits any setback to no more than four feet from the side and rear lot lines only for the portion of an ADU built outside that existing footprint.

Item (iii) mirrors that distinction for height: an existing garage or living area converted to an ADU faces no height limit, while any portion requiring a modification to the existing building height, or built outside the existing footprint, is capped at twenty-five feet or the underlying zone's height limit, whichever is lower. Items (iv) and (v) require the converted unit to match the primary dwelling's colors and materials and to have independent access that is not on the same wall-plane elevation as the primary dwelling's entrance.

Because the parcel must already carry an existing or proposed single-family or multifamily residential use in a residential or mixed-use zone under subsection (a)(2), and applications are approved ministerially within sixty days under subsection (a)(3)(i), a homeowner converting a garage into a legal ADU avoids both the discretionary review and the setback variance process a from-scratch addition would otherwise require.