ADU Construction in Peoria, AZ

Modern Design Construction builds custom ADUs on single-family lots across Peoria and the greater Phoenix metro area.

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A newly constructed detached ADU in a Peoria, Arizona backyard, showing a finished single-story structure with a private entrance and desert-appropriate exterior. The unit sits behind a single-family home on a standard residential lot in the greater Phoenix metro area.

Expert ADU Construction in Peoria, AZ

ADU construction gives Peoria homeowners a real way to add living space without leaving their property. Modern Design Construction handles the full build from design through finished structure, keeping the process clear at every step. Whether you want a detached backyard unit for a family member or a rental-ready space, we build it to fit your lot and your goals. Peoria updated its ADU ordinance to align with Arizona's statewide rules, so single-family lots can now support an ADU by right. That shift makes this a practical option for more homeowners across Peoria, Glendale, Scottsdale, Phoenix, and the surrounding West Valley communities. We work across all our service areas, including Buckeye, Laveen, Avondale, Anthem, and Sun City. Every project starts with a clear plan and ends with a finished structure you can actually use. If you are ready to add a second dwelling to your property, call Modern Design Construction to get started.

What's included

  • Adds a fully independent living space to your existing lot without buying new land
  • Creates a long-term rental income opportunity on your Peoria or Phoenix metro property
  • Gives family members a private, self-contained space on the same property
  • Increases your property's appraised value by adding a second dwelling unit
  • Built to meet Arizona residential building code requirements for a safe, livable structure
  • Designed to match your primary home's exterior so the finished result fits the neighborhood
Finish Carpentry Specialist
Custom Cabinetry Design
Design-Build Services
Rough Construction
ADU and Casita Construction

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ADU Construction FAQ

Common questions about adu construction in Peoria, AZ.

Yes, Peoria updated its zoning ordinance to allow ADUs by right on single-family lots. Most standard residential lots in Peoria qualify under the current rules.

An ADU is a fully independent dwelling with its own kitchen, bathroom, and living area on the same lot as your primary home. In the Phoenix metro, casita is a common local term for the same type of structure.

Yes, we build ADUs across the greater Phoenix metro, including Glendale, Scottsdale, Tempe, Avondale, Buckeye, Laveen, Anthem, Litchfield Park, and Sun City. Contact us to confirm coverage for your specific address.

Yes, Peoria does not require owner-occupancy, so you can rent the ADU as a long-term unit without living on the property. Check your HOA rules, as some communities may have additional restrictions.

We start with a design plan based on your lot and goals, then move through construction from foundation to finished structure. Our focus is on seeing each project through from start to finish with clear progress at every stage.

A detached ADU can be up to 75% of your primary home's floor area, with a cap of 1,000 square feet on standard lots. Lot size and local zoning rules in each city determine the exact maximum for your property.

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What Maricopa County customers say.

5.0
16 Google reviews

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After living in this house for over 20 yrs our kitchen needed to be brighter and more modern looking. Derek and his crew did an excellent job installing new counters, backsplash, and all the other upgrades we had envisioned. Great communication, prompt service and cleanup. We wouldn’t hesitate to contract with Modern Design Construction again for future remodeling!

Kate Schimelpfening Google review · August 2026

Derek did a complete gut and reconstruction of our kitchen and breakfast nook and we couldn’t be happier with the final results. He helped take our nice track home kitchen and make it custom home worthy! Derek expanded our island giving us more room for appliances and entertaining, added brand new cabinets that were extended up to the ceiling. We also added a whole new row of cabinets in our breakfast nook. To tie the whole project together, he updated our fireplace and added a matching mantle. The results speak for itself and he did an amazing job!

Nathan Goldberg Google review · January 2025

I finally have my dream kitchen. I initially wanted just my peeling cabinets replaced. Derek from Modern Design Construction LLC sent a picture of an updated much roomier kitchen. From start to finish, the hardest thing I had to do was pick out colors, flooring, knobs, a faucet and stay out of the way. The plumber, electrician, painter and flooring people all did exceptionally work. I highly recommended Modern Design Construction LLC. I am very pleased with my new kitchen.

Toni Pittman Google review · August 2026

We highly recommend Derek for your next remodel project. Our project included a major Kitchen redesign, as well as tile and cabinetry in two Bathrooms. From our very first meeting with Derek, he brought creative design ideas to help us reimagine our our spaces to achieve the bright and open concept we were looking for. This was a large project requiring multiple trades which Derek sourced and managed. It all went very smoothly and through each step, Derek worked closely with us to ensure every small detail met our expectations. His suggestions for tweaks here and there resulted in not only beautiful ascetics but, the best possible function as well. Thank you for everything Derek; you are a fabulous craftsman and a great guy! — Lisa Rae & Tom

Lisa Rae Heidtman Google review · January 2025

Derek is very professional and quickly responded to my issues with the plumbing install. I would definitely recommend his company.

This is a username Google review · April 2026

Proudly Based in Peoria, AZ

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Hours

  • Monday 7:00 AM - 4:00 PM
  • Tuesday 7:00 AM - 4:00 PM
  • Wednesday 7:00 AM - 4:00 PM
  • Thursday 7:00 AM - 4:00 PM
  • Friday 7:00 AM - 4:00 PM
  • Saturday Closed
  • Sunday Closed

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