Licensed General Contractor · CSLB #1075493

ADU Construction in San Diego

Accessory dwelling units are one of the smartest investments a San Diego homeowner can make — added rental income, space for family, and long-term property value. JR Hewlett Construction designs and builds attached, detached, and garage-conversion ADUs across San Diego County, fully permitted from plans to final sign-off.

Types of ADUs we build

Detached ADUs — standalone units in the backyard, from studios to two-bedroom homes.
Attached ADUs — additions connected to the main house that share a wall.
Garage conversions — turning an existing garage into a legal, comfortable living unit.
JADUs — junior ADUs carved from existing space for a lower-cost option.

We manage the whole ADU process

ADU projects live or die on permits and planning. We coordinate design, Title 24 energy compliance, utilities, and City or County approvals, then build the unit with the same licensed crew — so you have one point of accountability instead of juggling designers, expediters, and subs. California and San Diego pro-ADU rules have made approvals faster than ever, and we keep your project moving through each stage.

Backyard homes across San Diego County

We build ADUs in Lemon Grove, La Mesa, El Cajon, Spring Valley, Chula Vista, and greater San Diego. Turning an ADU into a rental or in-law suite often pairs well with a main-home remodel or kitchen upgrade.

Explore an ADU on your lot: call (619) 439-3764 or request a consultation.