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Accessory Dwelling Units (ADUs)

Many homeowners are looking for ways to increase the value of their property while creating an additional source of income. An Accessory Dwelling Unit (ADU) is one of the most effective ways to generate long-term rental revenue without purchasing another property.

At ArcDesign, we design custom ADUs and prepare permit-ready construction drawings that help homeowners maximize the potential of their property. Whether you're planning a detached backyard rental, garage conversion, or attached ADU, we'll create a design that fits your lot and meets local permitting requirements.
Add More Living Space Without Moving
An Accessory Dwelling Unit is much more than extra square footage—it's an investment in your property's future. Many homeowners build ADUs to create a private rental unit that generates monthly income while increasing the overall value of their home. Others use the space as a guest house, home office, or future living quarters for family members.

Our team designs attractive, functional ADUs that complement your existing home while making the best use of your available space.
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What Is an Accessory Dwelling Unit (ADU)?
An Accessory Dwelling Unit (ADU) is a fully independent residential living space built on the same property as an existing single-family home. It includes its own entrance, living area, kitchen, bathroom, and sleeping space, allowing it to function as a separate residence.

Depending on your property and local regulations, an ADU may be:
  • Detached backyard cottage
  • Attached addition
  • Garage conversion
  • Above-garage apartment
  • Guest house
  • Private rental unit
Every municipality has its own zoning regulations, setback requirements, and permitting process. Our team designs ADUs that comply with local building requirements while making the most of your available property.
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Why Homeowners Build ADUs
Many homeowners see an ADU as a smart long-term investment. In addition to creating more usable space, an ADU can provide steady rental income, increase resale value, and offer greater flexibility for future needs.

Common reasons homeowners build an ADU include:
  • Creating long-term rental income
  • Increasing property value
  • Building a detached backyard rental
  • Developing a short-term guest accommodation where permitted
  • Creating a private home office
  • Building a guest house
  • Housing family members when needed
  • Making better use of their property
A professionally designed ADU offers financial benefits today while providing flexibility for years to come.
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Custom ADU Design & Permit Drawings
Every property presents unique opportunities and design challenges. At ArcDesign, we create custom ADU plans that balance functionality, aesthetics, and local building requirements. Our goal is to design a space that's attractive to future tenants while blending naturally with your existing home.
Our permit-ready drawings help streamline the approval process and provide contractors with detailed plans for construction.

Our ADU services include:
  • Custom ADU floor plans
  • Detached ADU design
  • Attached ADU design
  • Garage conversion plans
  • Backyard cottage design
  • Site plans
  • Permit drawings
  • Existing conditions drawings
  • Coordination with engineers when required
  • Permit revisions and updates
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Planning Your ADU
Successful ADU projects begin with careful planning. Before construction starts, it's important to evaluate your property's layout, local zoning regulations, utility connections, parking requirements, and long-term investment goals.

Questions to consider include:
  • What size ADU best fits your property?
  • Detached or attached?
  • How will the unit generate income?
  • What permits are required?
  • Does your lot meet local zoning requirements?
  • How will utilities be connected?
Our team helps homeowners answer these questions early, reducing delays and creating a smoother path through the permitting process.
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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
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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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