Build more value, flexibility, and usable space on the property you already own.

An Accessory Dwelling Unit, often called an ADU, casita, guest house, in-law suite, backyard cottage, or garage apartment, can be one of the smartest ways to make your property work harder for you. Whether you want space for family, long-term rental income, a private guest suite, a home office, caregiver housing, or future downsizing flexibility, a well-planned ADU can add meaningful function and long-term value to your property.

At Prescott Builders of AZ, LLC, we help homeowners turn ADU ideas into buildable, code-conscious, budget-informed projects. From early feasibility through design coordination, permitting, construction, inspections, and final closeout, we guide the process so you can move forward with confidence.

We provide ADU services throughout Prescott, Prescott Valley, Cottonwood, Camp Verde, Chino Valley, and unincorporated Yavapai County.

Let’s Build Something That Lasts

Craftsmanship and care for every home and commercial project.

Entrance of Custom Home in Prescott

Who Our ADU Services Are For

Our ADU services are designed for homeowners, families, investors, and real estate professionals who want to add a second living space to an existing property but need a clear path before committing to design and construction.

This service is a strong fit for property owners who want to:

  • Create a private living space for aging parents, adult children, guests, or caregivers.
  • Generate potential long-term rental income from an existing property.
  • Add a detached casita, backyard cottage, garage apartment, attached unit, or garage conversion.
  • Increase property flexibility for future resale, retirement, or multigenerational living.
  • Understand whether their lot, zoning, septic, well, utilities, access, or drainage conditions can support an ADU.
  • Avoid costly surprises before spending money on plans, engineering, or permit applications.

An ADU may be small in size, but it is not a small project. A legal dwelling unit must be planned like a small home, with proper attention to structure, utilities, code compliance, fire/life safety, permitting, inspections, and long-term use.

What Is Included

ADU Feasibility & Site Review

Before you fall in love with a floor plan, we help determine whether the property can realistically support an ADU. This early review can help save time, money, and frustration by identifying major issues before design begins.

Our feasibility review may include:

  • Jurisdiction review: city, town, or unincorporated Yavapai County.
  • Zoning, setbacks, height, lot coverage, and ADU eligibility considerations.
  • Access, driveway, fire access, and site layout review.
  • Septic, sewer, well, water, and utility coordination concerns.
  • Floodplain, wash, drainage, grading, and slope considerations.
  • Preliminary review of site constraints that may affect cost, placement, or permitting.
  • The goal is simple: determine the best path forward before major design dollars are spent.

Budgeting & Preconstruction Planning

ADU costs vary widely in Yavapai County because every site is different. Utility distance, septic capacity, soil conditions, slope, fire access, drainage, and permitting requirements can all affect the total project cost.

We help owners understand the real budget drivers, including:

  • Site preparation and access.
  • Foundation and structural requirements.
  • Utility extensions or upgrades.
  • Septic or sewer impacts.
  • Design, engineering, survey, and geotechnical needs.
  • Permit and review requirements.
  • Construction scope, finish level, allowances, and contingency planning.

This gives you a clearer picture of the full project—not just a square-foot number.

Design & Engineering Coordination

A successful ADU requires coordination between the owner, designer, engineer, contractor, utility providers, and reviewing agencies. Prescott Builders helps connect the design intent with real-world constructability.

We help coordinate:

  • ADU layout and constructability review.
  • Detached ADUs, attached ADUs, garage conversions, garage-top units, and interior conversions.
  • Structural engineering needs for foundations, framing, lateral bracing, and specialty conditions.
  • 2024 IRC / 2024 IBC code-path planning where applicable.
  • Civil, drainage, septic, utility, and fire access considerations.
  • Design decisions that improve privacy, rentability, durability, comfort, and long-term flexibility.

Our goal is to help you design an ADU that is not only attractive, but practical to permit, build, maintain, and use.

ADU Construction Management

Once the project is ready to build, Prescott Builders manages the construction process with a focus on schedule, quality, communication, and site coordination.

Our construction services may include:

  • Trade scheduling and supervision.
  • Site protection and occupied-property construction planning.
  • Foundation, framing, mechanical, electrical, plumbing, insulation, drywall, finishes, and final site work coordination.
  • Inspection scheduling and correction management.
  • Change-order coordination and owner communication.
  • Quality control from start to finish.

We understand that many ADUs are built on properties where the main home is already occupied. That means site access, safety, cleanliness, communication, and minimizing disruption are all important parts of the construction plan.

Permit & Agency Coordination

Permitting can be one of the most confusing parts of an ADU project. Depending on the property location, the project may involve city or town review, Yavapai County requirements, septic review, utility providers, fire district review, floodplain review, or access and drainage conditions.

We help support the permitting process by coordinating:

  • Permit document preparation.
  • Review comments and correction responses.
  • County, city, or town permit requirements.
  • Utility, septic, well, fire, floodplain, and access-related items.
  • Inspection planning and permit closeout requirements.

The result is a more organized, better-prepared permit process with fewer avoidable delays.

Closeout & Owner Handoff

A strong finish matters. At the end of the project, we help owners move from construction to practical use with a clean closeout process.

Closeout may include:

  • Final inspection support.
  • Punch-list completion.
  • Warranty information.
  • Manuals and maintenance guidance.
  • Lien releases and closeout documents where applicable.
  • Utility and system information.
  • Rental-readiness or owner-use checklists.

The goal is to leave you with a finished ADU that is ready to use, maintain, and enjoy.

What Results Can You Expect?

When you work with Prescott Builders of AZ, LLC on an ADU project, you can expect a clearer path from idea to execution.

You should walk away with:

  • A better understanding of whether your property can support an ADU.
  • A realistic view of the site-specific risks, costs, and requirements.
  • A coordinated plan for design, engineering, utilities, permitting, and construction.
  • A project approach built around local Yavapai County conditions.
  • A code-conscious dwelling designed for real use, not just a concept drawing.
  • A finished ADU that can support family needs, rental goals, guest space, office use, or long-term property flexibility.

Not every parcel is ready for an ADU, and not every design makes sense for every property. Our job is to identify the path, risks, and cost drivers early so you can make informed decisions before investing heavily in plans or construction.

Living Room of custom home in Prescott AZ
Newly Home Build by Prescott Builder AZ

Why Build an ADU?

A well-designed ADU can create benefits that last for years.

It can give family members privacy while keeping them close. It can create potential rental income. It can provide a private place for guests, caregivers, or remote work. It can help homeowners age in place or plan for future downsizing. It can also improve the overall utility and appeal of your property.

Most importantly, an ADU gives you options.

And in today’s housing market, flexibility is valuable.

Start With a Feasibility Consultation

The best ADU projects start with the right questions:

  • Can my property support an ADU?
  • Where could it go?
  • What type of ADU makes the most sense?
  • What utilities or septic issues could affect the project?
  • What will the likely cost drivers be?
  • What approvals are needed before construction can begin?

Prescott Builders of AZ, LLC can help answer those questions and create a practical path forward.

Client consulting with the home builder in Prescott Az

Ready to explore an ADU on your property?


Schedule an ADU feasibility consultation with Prescott Builders of AZ, LLC.