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Accessory Dwelling Units
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Phoenix’s Affordable Housing Solution Designers

By now, the “tiny house movement” has become a well-known phenomenon, making a significant impact on the design world. In Tempe, AZ, there exists a vibrant tiny home community comprised of thirteen units, each a testament to the possibilities of compact living—we want to help Phoenix be the next. At Third Dimension Design, we recognize the importance of innovative design in spaces of all sizes. Whether it’s creating efficient floor plans, maximizing storage solutions, or optimizing multi-functional areas, our drafting and design services cater to the evolving needs of modern living.

We’re committed to helping you craft a space that not only fits your lifestyle but also reflects your personality and values, no matter the scale. With over 30 years of experience in the design industry, we know exactly how to configure your tiny home blueprint on a scale that’s legible, accurate, and complies with the ordinances of Arizona. Contact us to schedule a free consultation and start planning your efficient and affordable accessory dwelling unit today.

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Experience the Future of Housing: Tiny Homes vs. Accessory Dwelling Units

As more Americans plan on moving to new and upcoming cities across the country, the opportunity to find affordable and convenient housing has become dismal. Thankfully, the city of Phoenix now allows accessory dwelling units, commonly known as guesthouses, to be added to existing properties with single-family homes. Accessory dwelling units (ADUs) are either attached to or detached from the main residence and connected to the utilities of the primary dwelling. These can include converted sheds or barns, above-garage apartments, or basement conversions.

In contrast, tiny homes are structures under 600 sq. ft. that reside on a piece of property or land. Designed to maximize space and minimize living expenses, tiny homes can be used as primary residences, vacation homes, or guest houses. The best part is that they are completely customizable and have the flexibility to be relocated from place to place. Regardless of your preference, Third Dimension Design has the knowledge and expertise to design a blueprint for your tiny home or ADU.

Entrust Your Drafts to Us

Tiny homes and accessory dwelling units can be a viable part of the solution to your lack of space or need for additional income. With our detailed blueprints and design capabilities, you can create a space that has the entire neighborhood talking. Send us your contact information today, and we’ll be in touch with you shortly to schedule a free design consultation.

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Hear What Our Customers Are Saying

David is amazing! There were things along the way that I did not understand, and he always took the time to explain.

Kris M.

“David has drawn plans for the last few projects I have completed. It was nice to have him throughout the permit process. David also completed an as-built on an existing property which I was having a nightmare dealing with the county on and David was able to get it permitted.”

Nick M.

“Quick to respond. Knowledgable, helpful and thorough. Would definitely use them again!”


“Third dimension is one the best companies that I ever worked with. They are fast at responding. They are very good in helping to solve your problems. The best!”

Dimitri G.

“I would definitely recommend Third Dimension Design to everyone. Their prices are reasonable. David did a great job explaining everything to me when we hired him to design a front and back addition to our house. He also designed our pool. We are very happy with the process and how our new additions turned out.”

Lidia G.

Drafting Designs Throughout Maricopa County

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Accessory Dwelling Unit Design FAQs

Creating a personalized ADU or tiny home can be an exciting adventure, but it often comes with questions—especially in an area like Phoenix, where the laws and regulations surrounding these dwellings are still evolving. At Third Dimension Design, we’re familiar with all things blueprint creation for your ADU and are here to answer all your questions. Take a look at our most frequently asked questions, and contact us today if you have additional inquiries about our drafting and design services.

Yes, of course! Third Dimension Design’s blueprint services don’t stop once the basic design is created. We can turn your idea into a 3D rendering, giving you access to endless possibilities. Experiment with light fixtures, flooring options, paint samples, and furniture configurations to make sure the space is exactly how you imagined it.

We’re here to walk you through every single step of the design process, including where to begin. When you contact us to schedule a free design consultation, we’ll come out to your property (or desired location of the ADU build) and discuss your wants, needs, and budget. Once we have a clear understanding of what you’re looking for, we can begin the design process, where you’ll remain informed with updates along the way.

To learn more about to start your design project, visit our process page.

Easily: you leave it to us. Just as your contractors will perform the heavy lifting during the build-out phase, we’ll do all the heavy lifting when it comes to city approval. Once you’ve given us the go-ahead on your design, we’ll send it to the city to review and come back with any necessary revisions. After we’ve addressed all the revisions and reconstructed your blueprint, the city will grant you permit access to start construction.

Architectural Drafting Experts You Can Rely On

We’re here to define every line of your design.

Open & Honest Communication

We believe in upfront communication throughout the entire drafting and design process. We’re here to answer any questions you may have, update you on the progress of your project, and more.

30+ Years of Experience

Third Dimension Design has been in the drafting industry since the early ‘90s. Our draftsmen bring a wealth of knowledge and decades of experience to every Phoenix, AZ, project we work on.

Customized Solutions

No two renovation projects are the same, and our drafting and design services reflect that. We’ll work with you to create a detailed blueprint that fits your aesthetic, your needs, and your overall goals.

Customized Designs For Your Accessory Dwelling Unit

Just because you’re downsizing doesn’t mean you have to compromise on aesthetics and functionality. Third Dimension Design can create a blueprint or 3D rendering of your tiny house or ADU with finesse and accuracy. From planning out hidden storage cabinets and reworking sleeping arrangements to factoring in eco-friendly accessories and mapping out proper furniture sizes, we can do it all. As you plan your next rental property venture, consider partnering with a team of drafting and design specialists who know how to bring your ideas to life.

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