About Maricopa Casitas: One Vision. One Team. One Point of Accountability.

A Dedicated Resource for Arizona ADUs and Casitas

Powered by Smart Choice Remodeling

Maricopa Casitas was created to provide Arizona homeowners with a dedicated resource for planning, designing, and building high-quality casitas, ADUs, guest houses, and multigenerational living spaces. Through an exclusive strategic alliance with Smart Choice Remodeling, clients benefit from a streamlined process that combines specialized ADU expertise with the experience and resources of a licensed Arizona general contractor.

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Single Point of Accountability from Concept Through Construction

Every Maricopa Casitas project is designed, managed, and built by the Smart Choice Remodeling team, aligning planning, design coordination, project management, and licensed construction under one accountable team.

Cost to Build an ADU

Meet the Team

Jim Mullinex

Co-Founder & Strategic Advisor

Jim helped establish Maricopa Casitas with the vision of creating a trusted resource for homeowners exploring casita and ADU opportunities throughout Arizona. His business leadership, industry relationships, and strategic guidance continue to support the company’s growth and long-term mission.

Donda Mullinex

Co-Founder & Director of Client Experience

Donda oversees client experience and administrative coordination, helping ensure homeowners receive clear communication and support throughout the planning process. Her focus on organization, responsiveness, and customer care helps create a seamless experience from the first conversation through project completion.

Steve Seever

Managing Director, Maricopa Casitas
Director of Sales & Strategy, Smart Choice

Steve leads the strategic alliance between Maricopa Casitas and Smart Choice Remodeling, bringing together design, planning, sales, and construction expertise under one roof. His experience helps ensure every project is aligned with the homeowner’s goals, budget, and long-term vision.

      EXCELLENT  
   Based on 20 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Nisha Hyde 
 
 
 
 Trustindex verifies that the original source of the review is Google. Maricopa Casitas stands out for the quality, professionalism, and genuine care they bring to their projects. Jim and Donda are thoughtful, detail-oriented, and clearly take pride in creating a great experience from beginning to end. What stands out most is the integrity behind the company and their commitment to doing things right. If you’re considering building a casita or ADU, Maricopa Casitas is absolutely worth talking to.
  
 
      Posted on Google  
   
   George C 
 
 
 
 Trustindex verifies that the original source of the review is Google. Out of their busy schedules, they drove out to the property multiple times, helped me assess its condition, and even coordinated specialty workers to evaluate the home and make it safe. Beyond the practical help, they walked alongside me when I needed advice and a friend. I had no one else to turn to, and they showed up with glad hearts. I’m deeply grateful for friends I’ve never even met in person who were so willing to help. That speaks volumes about who they are. If they take such good care of a stranger with nothing to gain, I can only imagine how well they’d take care of you as a valued customer. I recommend them to anyone for all things building and real estate — 200%.
  
 
      Posted on Google  
   
   Angela Wayne 
 
 
 
 Trustindex verifies that the original source of the review is Google. I highly recommend Maricopa Casitas! They are professional, knowledgeable, and genuinely care about helping homeowners create the right space for their needs. What really impressed me was the level of communication and organization throughout the process. Their subcontractors and handymen are also responsive, communicative, reliable, and show up on time, which is incredibly important in construction. Everyone I’ve interacted with has been professional and easy to work with. If you’re considering adding a casita or ADU to your property, Maricopa Casitas is definitely a company worth talking to. They take pride in their work and truly care about delivering a quality product and a great customer experience.
  
 
      Posted on Google  
   
   Adrea C 
 
 
 
 Trustindex verifies that the original source of the review is Google. Jim and Donda with Maricopa Casitas are so friendly and knowledgeable. It is clear they care about their clients and bringing our vision to life! Cannot recommended them highly enough to anyone looking for an ADU.
  
 
      Posted on Google  
   
   Rhonda Calahan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Maricopa Casitas is a great company. I have known Jim and Donda for a very long time and I know that they take great care when working on their properties. I would gladly work with them in the future.
  
 
      Posted on Google  
   
   Adona Bealer 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great people to work with!
  
 
      Posted on Google  
   
   Amy Butler 
 
 
 
 Trustindex verifies that the original source of the review is Google. Jim and his crew do amazing work and are amazing people! Would highly recommend them and their work!
  
 
      Posted on Google  
   
   Samantha Barker 
 
 
 
 Trustindex verifies that the original source of the review is Google. Working with Maricopa casitas was a great experience! I highly recommend working with them on your next build. They were knowledgeable, communicative, and transparent every step of the way.
  
 
      Posted on Google  
   
   Dominic Milinazzo 
 
 
 
 Trustindex verifies that the original source of the review is Google. I've known Jim and Donda for quite a few years now and even traveled with them. These are the people you call when you want the job done right. Jim's craftsmanship is the real deal and the guy takes serious pride in his work. Donda's attention to detail is on another level and nothing gets past her. In a world full of bad actors, these two are not that. Genuinely good people with real integrity and I trust them a hundred percent. If you're looking to get an ADU or a casita built, do yourself a favor and reach out to them first.
  
 
      Posted on Google  
   
   Marco Guevara 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great work in a timely manner. Always kept the site clean and quality finish. Highly recommended!
  
 
  
  
 
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

About Smart Choice Remodeling

Embark on a seamless and transparent path to your custom casita with Maricopa Casitas. Our ADU construction process is designed to be straightforward and stress-free, ensuring that you are informed and involved at every stage.

Exclusive Builder – Smart Choice Remodeling is the construction partner for Maricopa Casitas projects.
Licensed Team – Licensed, bonded, and insured residential remodeling expertise supports each build.
Project Management – The construction team provides the field expertise, coordination, and quality control needed from groundbreaking through final completion.

One Vision. One Team. One Point of Accountability.

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Contact Maricopa Casitas Today

Ready to explore a casita, ADU, guest house, or multigenerational living space? Contact Maricopa Casitas to start the planning conversation with a team built around clear communication and coordinated delivery.

Call us today at 602-921-7071