Accessory Dwelling Units

Looking to add value, space, and flexibility to your property? Accessory Dwelling Units (ADUs) are one of the smartest investments for homeowners in Arizona. Whether you’re adding a rental unit, guest house, or private space for extended family, our experienced team of ADU builders and designers will guide you through every step—from accessory dwelling unit plans to final construction.

As a trusted ADU contractor in Phoenix Arizona, we understand zoning laws, permitting, and the unique requirements of ADU construction in Phoenix and surrounding cities. Whether you’re planning a detached structure or a Junior Accessory Dwelling Unit (JADU) conversion within an existing home, Bello Construction brings expertise, transparency, and efficiency to every project.

Why Choose Us for Your ADU Project?

Accessory Dwelling Unit

Custom Accessory Dwelling Unit plans designed to fit your property and purpose.

Start-to-finish project management

Start-to-finish project management—including permitting, design, and construction.

Start-to-finish project management

Experienced ADU builders who understand Arizona’s building codes and lot requirements.

Maximize your ROI

Maximize your ROI with quality builds that boost property value.

Maximize your ROI

We help you explore Junior ADUs, detached units, garage conversions, and more.

Reliable timelines

Reliable timelines, competitive pricing, and flexible financing options.

Experienced Teams

Professional team you can trust

FAQ

frequently asked questions

What does ADU stand for?

ADU stands for Accessory Dwelling Unit—a secondary residential unit built on the same lot as a primary residence.

What is an Accessory Dwelling Unit or ADU?

It’s a self-contained living space that includes a kitchen, bathroom, and sleeping area. ADUs can be attached, detached, or built within existing space like a garage or basement.

What is a Junior Accessory Dwelling Unit (JADU)?

A JADU is a smaller version of an ADU—typically under 500 sq. ft.—and is created within the footprint of an existing home, such as a converted bedroom with a small kitchenette.

How do I build an Accessory Dwelling Unit?

Start by contacting a licensed ADU builder like us. We’ll help with design, permits, and construction. Every city has zoning laws, so we ensure full compliance with local requirements.

What states allow ADUs?

Many states allow ADUs, including Arizona, California, Oregon, Washington, and others. Local regulations vary, so it’s important to check with your city planning office—or ask us!

Can I build an ADU on my property?

In many cases, yes! It depends on your lot size, zoning, and setback rules. Our team can evaluate your property and guide you through the process.

Testimonials

What our customers are saying

Narsay was phenomenal from start to finish. Out of the five estimates I received, his pricing was right in the middle, but his professionalism and attention to detail set him apart. He clearly understood my vision and provided valuable insights that enhanced the final outcome. Narsay and his crew were exceptional—always on time, respectful, and focused on quality. He stayed on budget throughout the project and kept me informed every step of the way. No matter the time of day, even while on vacation, he was always available to answer any questions via call or text. His dedication and professionalism were truly impressive. I would highly recommend Narsay and his team to anyone considering a remodel. High marks all around!

Michael S.
Michael S.

Over the years, Narsay Bello and company have remodeled two homes for me. He brings an abundance of experience, professionalism, and creativity. In an industry that is notorious for their delays, Narsay completed the projects as promised in the initial quotes! I had a complete Master Bathroom remodeled into a luxury suite. There was complexity with the sewer lines, and Narsay calmed my angst and notified me that he is a licensed plumber and is capable of addressing it. In a separate remodel, the house needed a lot of love, and we were short on time before I had to move in. He was so responsive and was able to prioritize the project (granted at a premium cost) but it was all worth it to have it done so promptly! I continuously recommended Bello Construction and won’t allow anyone else to work on my existing or future homes. He is fairly priced, honest, and communicative. I personally love supporting local family business and highly recommend them!

Jimmy P
Jimmy P

Narsay and crew from Bello Construction did a great job transforming our kitchen and living room vision into reality! We are very happy with how everything turned out!

Nancy B
Nancy B

After interviewing several contractors we selected Bello Construction based on their portfolio of past projects and the initial meeting we had with Narsay. We are extremely pleased with the results! Narsay listened to our inputs, gave invaluable advice and as team we designed a beautiful casita with attached garage/shop. The quality and professionalism at each step of the large project were fantastic. Thanks to Narsay and his wonderful crew for their dedication and attention to detail, our family really appreciates it.

Pete O
Pete O

We had a great experience with Bello Construction. We had a fairly big project of tearing down a load bearing wall, redoing 1000 square feet of flooring, replacing windows and completely redoing the kitchen from scratch. We had six companies come out to bid for the project that sought out our work on the thumbtack. Of those companies, only a three gave us quotes. We chose BC because their quote seemed to be the best and we really liked Narsay (the company owner). From the outset, he was highly communicable and friendly. As project progressed, we were highly impressed that their focus on our project and communication never waned a bit. Any texts, calls or emails were almost always responded to within minutes. Over the span of the 5 week project, Narsay was on site all but two business days. The end result was an on-budget, ahead of schedule project that exceeded all our expectations. Any concerns we had were addressed to our satisfaction along with their guarantee that they will continue to back up their work even after the project was done. Great people that do great work!

Scott W
Scott W

We hired Bello Construction for a major remodel of our home creating a high end gym and spa in our casita. From the very first time we met with Narsay(owner/contractor) he saw our vision. He listened to us and found ways to make our vision happen. Every step of the way he was on top of our project making sure the details were covered. He was punctual with his deadlines even delivering the final project early! He was also on budget. Two great things to say about any contractor in my opinion. The finished product exceeded our high expectations. I couldn't give any higher of a recommendation to Narsay and Bello Construction. We will definitely be using him again for future projects around our home.

Tim K
Tim K

Servicing area

Servicing Maricopa County

We proudly serve homeowners and businesses throughout the greater Phoenix metropolitan area. From vibrant Phoenix, AZ to the surrounding communities of Mesa, Scottsdale, Glendale, Gilbert, and Chandler, our team provides top-notch construction services tailored to each client’s needs.
  • Phoenix AZ
  • Mesa AZ
  • Chandler AZ
  • Scottsdale AZ
  • Glendale AZ
  • Gilbert AZ
  • Tempe AZ

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