Mastercraft ADUs

Custom Accessory Dwelling Units in Phoenix, AZ

Design • Permitting • Construction

Mastercraft helps Phoenix homeowners turn their property into flexible, high-quality living space. From backyard casitas to garage conversions, we manage the entire ADU process—from concept to completion.

The Process

01 CONSULTING

02 DESIGN

03 PERMITTING

04 CONSTRUCTION

ADU Types We Build

Mastercraft designs and builds ADUs that fit your property, goals, and local zoning requirements.

Detached ADUs
Standalone backyard casitas offering maximum privacy and flexibility.

Attached ADUs
Units connected to the main home, ideal for extended family or long-term rentals.

Garage Conversions
Transform an existing garage into a fully functional living space.

Interior ADUs
Efficient conversions within your home, such as basement or layout redesigns.

What Is an ADU?

An Accessory Dwelling Unit (ADU) is a smaller, independent living space located on the same lot as a primary home. In Phoenix, ADUs are often called guest houses, casitas, or backyard units.

ADUs typically include:

A private entrance
Kitchen or kitchenette
Bathroom
Living and sleeping space

They’re commonly used for rental income, multigenerational living, or flexible home space.

Why Build an ADU in Phoenix?

Phoenix continues to see strong demand for smaller, well-designed living spaces.

Benefits of building an ADU include:

Rental income potential
Housing for family members
Increased property value
Flexible use as a home office, guest suite, or studio
Long-term investment in your property

ADU Costs & Timelines

Every ADU is unique. Costs and timelines depend on:

ADU type and size
Site conditions
Utility connections
Interior finishes

We provide clear estimates and realistic timelines after reviewing your property and goals.

Why Choose Mastercraft?

Local Phoenix ADU expertise
Design-build convenience
Permit coordination included
Transparent communication
Quality craftsmanship

We focus on practical designs, smooth approvals, and durable construction you can rely on.

Featured ADU Build – Modern Shipping Container ADU in Phoenix, Arizona

A Smart Investment That Adds Value

This featured Accessory Dwelling Unit (ADU) showcases how a shipping container can be transformed into a beautiful, functional living space. Designed for durability, efficiency, and modern living, this custom-built ADU provides homeowners with an affordable way to expand their property while creating additional income opportunities.

Whether you're looking for a rental unit, guest house, home office, or living space for family members, our container ADUs are built to meet your needs while standing up to Arizona's climate.

The Container Casita

Experience The Container Casita - Book Your Stay Today

Project Highlights

High-quality steel shipping container construction
Modern exterior with customizable finishes
Energy-efficient insulation designed for Arizona weather
Full kitchen and bathroom
Spacious open-concept floor plan
Energy-efficient windows and doors
Electrical, plumbing, and HVAC ready
Custom interior finishes
Built to meet local building requirements

Perfect Uses

Long-term rental property
Guest house or casita
Mother-in-law suite
Home office or studio
Airbnb or short-term rental (where permitted)
Backyard retreat

Why Choose a Shipping Container ADU?

Container ADUs offer exceptional strength, faster construction timelines, and lower maintenance than many traditional structures. They are an excellent solution for homeowners looking to maximize their property's potential while adding usable square footage.

Every project is customized to fit your property, budget, and design preferences. From the initial concept through installation, our team works with you to create an ADU that is both functional and visually appealing.

Start Your ADU Project Today

Ready to add value to your property? Contact our team to learn more about our custom shipping container ADUs. We'll help you design a space that fits your lifestyle while maximizing your investment.

Serving Phoenix, Scottsdale, Mesa, Chandler, Gilbert, Glendale, Peoria, Surprise, Goodyear, Buckeye, and communities throughout Arizona.

Request ADU Quote

Frequently Asked Questions

Can I rent out my ADU? Rental use depends on local regulations and zoning. Many ADUs are used as long-term rentals, while short-term rental rules may be more restrictive. Mastercraft helps you understand what rental options may apply to your property.

Are ADUs allowed in Phoenix, Arizona? ADUs are allowed in many areas of Phoenix, but approval depends on zoning, lot size, setbacks, and existing structures. City regulations determine what type of ADU can be built and how it must be designed. Mastercraft reviews your specific property to confirm eligibility before design begins.

How big can an ADU be in Phoenix? Maximum ADU size depends on: • Zoning district • Lot size Whether the ADU is detached, attached, or a conversion; We design ADUs to meet current City of Phoenix requirements while maximizing usable space.

Do ADUs require permits? Yes. ADUs require building permits and inspections through the City of Phoenix to ensure compliance with zoning, building, and safety codes. We manage the permitting process from start to finish.

Will an ADU increase property value? In many cases, yes. ADUs add functional living space and rental potential, which can improve resale value. Property taxes may increase due to added improvements.