Accessory Dwelling Units (ADUs)

Many homeowners need additional living space but don't want the expense and hassle of moving. An Accessory Dwelling Unit (ADU) offers a practical way to expand your property while increasing its value and functionality. Whether you're planning a guest house, in-law suite, home office, or rental unit, a professionally designed ADU can provide the flexibility your family needs.

At ArcDesign, we specialize in custom ADU design and permit-ready drawings tailored to your property and local building requirements. From the initial concept to final construction plans, our experienced team works closely with you to create a space that's both beautiful and functional.
Add More Living Space Without Moving
An Accessory Dwelling Unit is one of the most versatile additions you can make to your property. Whether you're creating a comfortable space for aging parents, giving adult children more independence, building a private guest suite, or generating additional rental income, an ADU offers long-term flexibility without changing neighborhoods.

Our designers create custom layouts that maximize available space while blending seamlessly with your existing home. Every project is designed with your lifestyle, budget, and local permitting requirements in mind.
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What Is an Accessory Dwelling Unit (ADU)?
An Accessory Dwelling Unit, commonly called an ADU, is a smaller, fully functional residential living space built on the same property as an existing single-family home. Depending on local regulations, an ADU may include its own kitchen, bathroom, bedroom, and living area, making it suitable for full-time occupancy.

Each city and county has different requirements regarding ADUs, including setbacks, maximum size, parking, and utility connections. That's why proper planning is essential before construction begins.
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Why Homeowners Build ADUs
Homeowners choose ADUs for many different reasons.

Common reasons homeowners build an ADU include:
  • Creating an in-law suite for aging parents
  • Providing independent living space for adult children
  • Building a private guest house
  • Generating rental income
  • Adding a dedicated home office or studio
  • Increasing property value
  • Supporting multigenerational living
  • Creating flexible space for future family needs

An ADU provides additional living space today while giving your property greater flexibility for years to come.
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Custom ADU Design & Permit Drawings
Every property presents unique opportunities and challenges. Our team designs ADUs that complement your existing home while meeting local zoning regulations, setback requirements, and building codes. We create permit-ready construction drawings that builders can confidently follow, helping streamline the approval process and reduce costly revisions.

Then change the bullets to
  • Custom ADU floor plans
  • Detached ADU designs
  • Attached ADU designs
  • Garage conversion plans
  • Guest house design
  • Site plans
  • Permit drawings
  • Existing conditions drawings
  • Coordination with structural engineers
  • Permit revisions when required
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Planning Your ADU
Planning an ADU involves more than choosing a floor plan. Every project should begin with a clear understanding of your property's layout, local zoning requirements, available utilities, and long-term goals. Answering these questions early helps avoid delays during permitting and construction. Before designing your ADU, there are several important questions to answer:

  • How much space do you need?
  • Will the ADU be attached or detached?
  • Will it include a kitchen and bathroom?
  • Does your property meet local zoning requirements?
  • What permits will be required?
  • How will the new space connect to existing utilities?
Our team helps guide you through these decisions before construction begins, reducing surprises and helping avoid costly revisions later.
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Our Clients Love What We Do
  • We had such a great experience working with ArcDesign. From consult to final plan, it was seamless and timely. We couldn't have asked for a better team. They were patient with us, advised us, and are excellent communicators. We are so pleased with ArcDesign and will contact again, should the need arise. ArcDesign, Thank you so much. We look forward to the next steps and for you to see the final result.
    R.M.
    Review from Houzz.com
  • I have worked with ArcDesign on two home renovation projects; ranging from a master bathroom/closet addition to an extensive major home remodel. They have been wonderful to work with! Everyone in their office is professional, easy to communicate with, and architecturally talented! They are always quick to respond to any questions or requests, and truly care about bringing our vision to life exactly as we want it. Ben meticulously designed our dream home. His attention to detail and our desires really showed during the entire process. We highly recommend them!
    A.H.
    Review from Houzz.com
  • I was very impressed with Arc Design. Randy worked with me till we got everything that I wanted in the plan for my mother-in-law apartment. He was very patient and listened to everything that I said and all of my ideas and it turned out exactly how I wanted it. He had great ideas that I didn't think of and I am looking forward to the build. I highly recommend this firm.
    A.B.
    Google Review
  • The team at ArcDesign has done a wonderful job for us. Right from the start and through out the process they were very responsive. We are very happy with the job they did for us and would not hesitate to hire them again for another project.
    P.
    Review from Houzz.com

Planning an ADU Starts with the Right Team

A well-designed Accessory Dwelling Unit can provide years of comfort, flexibility, and added property value, but every successful project begins with careful planning. Before construction starts, it's important to understand how your property, local zoning regulations, setback requirements, and permit process may affect your design. Taking the time to create detailed, accurate plans can help prevent costly revisions, unexpected delays, and construction issues later.

At ArcDesign, we work closely with homeowners to transform ideas into practical, permit-ready designs that builders can confidently follow. Whether you're planning a detached guest house, an in-law suite, a garage conversion, or a private rental unit, our team is committed to creating a design that complements your existing home while meeting your family's unique needs. From the initial concept through the permitting process, we're here to make every step as smooth and straightforward as possible.

If you're ready to start planning your Accessory Dwelling Unit, call 727.446.8022 Monday through Friday, 9 AM to 5 PM to schedule your free design consultation. We'd be happy to discuss your project, answer your questions, and help you take the first step toward bringing your vision to life.

Accessory Dwelling Unit

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