Additional Dwelling Unit

Additional Dwelling Unit.

ADU and Casita Solutions
in Phoenix, AZ

Sunflower Casitas helps homeowners plan custom casitas and ADUs throughout Phoenix and surrounding areas. We coordinate design, permitting, financing, and qualified construction professionals to simplify the entire process.

Additional
Dwelling Unit.

More Space, More Freedom.

Roof for shelter
Integrated Kitchen
Comfort Side
Outdoor lighting
Natural Light
Additional Dwelling Unit in Phoenix
Roof for shelter
Outdoor lighting
Integrated Kitchen
Comfort Side
Natural Light

What Is an Additional Dwelling Unit? 

An ADU is a separate living space built on the same property as your main home. It can be designed as a detached casita, attached addition, garage conversion, guest suite, or private living space for family.

One Property. More Possibilities.

Create space for aging parents, adult children, guests, a home office, or potential rental income while adding long-term function and value to your property.

Accessory Dwelling Unit.

Designed for Modern Living.

An accessory dwelling unit gives you freedom: a private home, an office, or a rental studio, all on your own property. We specialize in designing ADUs that balance comfort, functionality, and beauty.

Families Who Already
Enjoy Their Casita.

I started this project with the idea of renting my casita on Airbnb, and Sunflower guided me through everything — from design to permits. I was amazed by how well-optimized the space is and how quickly the investment pays off. You can tell they truly know what they're doing and care about every detail.
Olivia
I needed a private space to work from home, and Sunflower designed something that feels like a studio but with all the comfort of a full home. What impressed me most was the constant communication throughout the build and their commitment to deadlines.
Mateo
We loved the idea of having a casita in the backyard for guests, and the result went far beyond our expectations. The team was attentive, answered every question, and adjusted to our budget without compromising quality. You can tell they love what they do.
Sophia
Building our casita with Sunflower was one of the best decisions we've made. We wanted a space for my parents, and the team understood exactly what we needed from day one. The whole process was clear, professional, and incredibly detail-oriented. Now my parents have their independence, and we have the peace of mind of keeping them close.
Liam
I started this project with the idea of renting my casita on Airbnb, and Sunflower guided me through everything — from design to permits. I was amazed by how well-optimized the space is and how quickly the investment pays off. You can tell they truly know what they're doing and care about every detail.
Olivia
I needed a private space to work from home, and Sunflower designed something that feels like a studio but with all the comfort of a full home. What impressed me most was the constant communication throughout the build and their commitment to deadlines.
Mateo
We loved the idea of having a casita in the backyard for guests, and the result went far beyond our expectations. The team was attentive, answered every question, and adjusted to our budget without compromising quality. You can tell they love what they do.
Sophia
Building our casita with Sunflower was one of the best decisions we've made. We wanted a space for my parents, and the team understood exactly what we needed from day one. The whole process was clear, professional, and incredibly detail-oriented. Now my parents have their independence, and we have the peace of mind of keeping them close.
Liam
Most Popular Model

Mooney Fall

Our best-selling casita — 600 sq ft of flexible, two-bedroom living.

Mooney Fall casita model
600
Sq Ft
1
Bathroom
2
Bedroom
1
Integrated Kitchen

Inspired by the lush oasis of Mooney Falls, this model brings a refreshing sense of calm to everyday living.

View Mooney Fall Details

Interactive Walkthrough

Explore the Mooney Fall

Click through the rooms and experience the layout in 360°.

ADU.

Smart. Sustainable. Profitable.

An ADU can create more space, flexibility, and long-term value for your property. Sunflower Casitas helps homeowners explore the right solution for family living, guests, rental potential, or a private home office, while coordinating the professionals needed to bring the project to life.

ADU Construction Cost. Transparency from Day One. Flexible Refinancing Options First-Time Buyer Support Investment Property Financing Flexible ADU Purchase Loans
ADU Construction Cost. Transparency from Day One. Flexible Refinancing Options First-Time Buyer Support Investment Property Financing Flexible ADU Purchase Loans
ADU House

ADU Cost.
Plan Ahead, Save More.

Understanding ADU cost is key to starting your project confidently.

We provide detailed, transparent estimates so you know exactly what you're paying for.

Get a FREE Consultation

ADU Construction Cost.
Transparency from Day One.

Flexible ADU Purchase Loans

Flexible ADU Purchase Loans

Flexible Refinancing Options

Flexible Refinancing Options

First-Time Buyer Support

First-Time Buyer Support

Investment Property Financing

Investment Property Financing

Frequently Asked Questions

How does the process of adding a casita with SunFlower work?+

Our process is simple and guided. It starts with a short phone call to answer your questions and gather initial details. Next, we schedule an on-site meeting at your home to assess your property and confirm building feasibility. Then, we meet at our Phoenix office to discuss size, materials, design, and financing options through our trusted partners. Once you decide, we guide you through every step — permits, construction, and completion — ensuring a smooth experience.

What are the requirements for adding a casita to my property in Arizona?+

Under Arizona's 2024 ADU law, most single-family lots can add a casita, but requirements vary by city. Generally, you need sufficient lot space (e.g., a backyard area meeting setback rules), compliance with local zoning (e.g., size limits up to 1,000 sq. ft. in many areas), and proper permits. Our on-site meeting assesses your property's eligibility, and we handle permitting to ensure compliance.

Can I rent out my casita for additional income?+

Yes! Arizona's 2024 ADU law allows homeowners to rent out casitas for long-term or short-term use (e.g., Airbnb), depending on local regulations. A casita can generate significant rental income, often $1,000–$2,500 per month in Arizona, depending on location and size. We'll discuss rental potential during our design meeting to maximize your investment.

What sizes and designs are available for my casita?+

We offer customizable casitas, typically ranging from 400 to 1,000 square feet, to comply with Arizona's ADU regulations. Designs include studio layouts, one-bedroom units, or custom configurations with features like kitchens and bathrooms. In our Phoenix office meeting, we'll explore materials (e.g., wood, stucco) and styles (e.g., modern, traditional) to match your vision and property.

Why should I choose SunFlower Casitas for my ADU project?+

SunFlower Casitas is your trusted partner in Arizona for ADU projects. We offer a seamless process — phone consultation, on-site assessment, and personalized design and financing meetings in Phoenix. Our partnerships with reliable builders and financing providers ensure quality and affordability. We hold your hand through every step, delivering a stress-free experience and a casita that enhances your property's value.

What types of financing options are available for my casita?+

SunFlower Casitas partners with trusted financing providers to offer flexible options tailored to your needs. These may include home equity loans, construction loans, or specialized ADU financing programs. During our Phoenix office meeting, we'll review your financial situation and connect you with the best option, walking you through terms and payments to ensure affordability.