ADU Construction in Tucson

We build custom accessory dwelling units from the ground up. Whether you need a detached backyard unit, an attached addition, or a conversion of existing space, our team handles every phase of ADU construction in Tucson and Pima County.

Full-Service ADU Construction

An accessory dwelling unit, or ADU, is a self-contained living space built on the same lot as your primary home. In Tucson, these are commonly called casitas, guest houses, or backyard cottages. Whatever you call them, they serve one purpose: adding functional, independent living space to your property.

At Tucson Casita Builders, ADU construction is all we do. We don't build strip malls or apartment complexes. Every member of our crew specializes in residential ADU construction, which means we build faster, cleaner, and smarter than a general contractor who treats ADUs as a side project.

Tucson's growing housing market and the city's "Casitas in Tucson" program make ADU construction an increasingly popular and financially smart investment. Whether you're building for rental income, multi-generational family living, a home office, or long-term property value, an ADU is one of the highest-ROI improvements you can make to a Tucson home.

Types of ADUs We Build

Detached ADU

A standalone structure in your backyard. Maximum privacy and flexibility. Typically 400 to 1,000 sq ft with full kitchen, bathroom, and living space.

Attached ADU

An addition to your existing home with a separate entrance. Shares one or more walls with the main house, reducing construction costs while adding independent space.

Garage Conversion

Transform an existing garage into a livable ADU. Often the most cost-effective option since the shell structure already exists. Learn more

Above-Garage ADU

A living unit built above a new or existing garage. Maximizes your lot space by building vertically. Popular in areas with smaller lots.

ADU Construction Costs in Tucson

ADU construction costs in Tucson typically range from $150 to $350 per square foot depending on finishes, site conditions, and complexity. Here's a general breakdown:

400 sq ft studio casita $80,000 - $140,000
600 sq ft 1-bedroom ADU $120,000 - $210,000
800 sq ft 2-bedroom ADU $160,000 - $280,000
Garage conversion $60,000 - $120,000

These ranges include design, permitting, and construction. Actual costs depend on site conditions, material selections, and scope. We provide detailed line-item estimates at no cost.

Why Build an ADU in Tucson?

Tucson is one of the most ADU-friendly cities in Arizona. The city's "Casitas in Tucson" program streamlined regulations to make it easier and faster to build accessory dwelling units. Key benefits include:

  • Rental income: Tucson ADUs rent for $1,200 to $2,500/month depending on size and location
  • Property value: ADUs typically add 20-30% to your home's value
  • No owner-occupancy requirement: Tucson does not require the homeowner to live on-site
  • Flexible zoning: ADUs are allowed in most residential zones in Tucson
  • Housing demand: Tucson's population growth is outpacing housing supply, keeping rental demand high

Get a Free ADU Estimate

Schedule a no-obligation site visit. We'll assess your property and provide a detailed estimate for your ADU project.

Schedule Site Visit

or call (520) 555-1234