Phoenix:

Flagstaff & Northern AZ:

Residential

Phoenix guest house & adu contractor

Serving phoenix, scottsdale, glendale and surrounding areas

Casitas, guest homes, and accessory dwelling units (ADUs) are a smart way to add functional, private living space to your property. Whether you’re hosting family, accommodating long-term guests, or creating a potential rental unit, these structures offer flexibility and lasting value. At Miko LLC, we specialize in custom-built guest spaces across Phoenix — including detached casitas and fully equipped ADUs. From initial design to final construction, we handle every detail to deliver a space that’s comfortable, code-compliant, and tailored to your needs.

Custom Guest Homes & ADU's In Phoenix, AZ

Looking to add a private, flexible living space to your property? Whether it’s for family, guests, or rental income, custom guest homes and accessory dwelling units (ADUs) are a smart solution. Miko LLC designs and builds fully customized structures that match your home’s style and meet your functional needs.

 

From casitas and backyard studios to full ADUs with kitchens and bathrooms, we manage every phase — design, permitting, and construction. Our team ensures your new space is code-compliant, efficient, and built to last.

If you’re in the Phoenix area and ready to expand your living options, we’re here to help you bring your vision to life.

What are ADUs?

ADU stands for Accessory Dwelling Unit — a secondary residential space located on the same property as a main home. ADUs can be detached (like a backyard casita), attached (such as a converted garage or basement), or even part of the main house with a separate entrance.

 

To qualify as an ADU, the space typically must include its own kitchen, bathroom, living area, and entrance, making it a fully independent living unit. Homeowners decide to build ADUs for various of reasons, such as provide housing for parents, young adult children, extended family, long-term guests, or as rental units to generate additional income.

 

In Phoenix and surrounding areas, ADUs are growing in popularity due to their flexibility, potential for passive income, and ability to add usable space without moving. Miko LLC specializes in designing and building ADUs that are fully permitted, functional, and tailored to your property.

Spacious modern bathroom with a freestanding tub by large windows, a marble-accent vanity with a backlit mirror, and a walk-in shower featuring dramatic black-and-white stone walls.

Types of ADUs

Detached ADU

A standalone structure, often called a casita or guest house, located in the backyard or on another part of the lot.

Attached ADU

An addition that connects to the main home but has a separate entrance and full living amenities.

Garage Conversion

An existing garage transformed into a livable unit with insulation, plumbing, and full interior build-out.

Interior Conversion (Junior ADU)

A section of the main house, such as a basement or unused space, converted into a private unit with separate access.

Process

Our ADU & Guest home building Process

1

Consultation & Site evaluation

We talk about your goals, budget and vision for your guest home. We evaluate your property to ensure zoning compliance, lot space and utility access

2

Custom Design & Planning

We design customized layouts and provide a permit ready plan. You’ll get to review and refine designs before we start building.

3

Permitting & Approvals

We take care of all the paperwork and communication with the city to get the necessary building permits and approvals. We make sure your project complies with local codes.

4

Construction

We build your custom guest home with high quality materials and energy efficient techniques. We inspect regularly to maintain our high standards.

5

Final Walkthrough

After completion, we will do a final walkthrough to make sure everything meets your expectations. We’re here to support you with any post build questions or adjustments.

Why build an adu?

Building an ADU is one of the most practical ways to add value, flexibility, and functionality to your property. 

Aerial view of a construction site showing two buildings with dark metal roofs, surrounding dirt work areas, equipment, and workers along the perimeter

Whether you’re looking for more space or a long-term investment, an ADU offers real benefits:

  • Rental Income: Generate passive income by renting out the unit long-term or as a short-term rental (if allowed in your area).

  • Multigenerational Living: Provide a private, independent space for aging parents, adult children, or extended family without sacrificing comfort or privacy.

  • Guest Accommodations: Host friends and visitors in a dedicated, self-contained space that doesn’t disrupt your main home.

  • Work or Studio Space: Use your ADU as a home office, art studio, or quiet retreat — all without leaving your property.

  • Increase Property Value: A well-designed, permitted ADU can significantly increase the market appeal and resale value of your home.

 

At Miko LLC, we help you design and build an ADU that fits your goals, budget, and property — from initial planning to final construction.

Trusted ADU contractor in phoenix and surrounding areas

Miko LLC has become a trusted name in Phoenix for high-quality, custom-built guest homes. Our clients rely on us for:

  • End-to-End Expertise: From zoning regulations to construction permits and architectural design, we manage every phase of the project.
  • Tailored Designs: Each casita is custom-built to match your property’s layout, style, and your functional needs.
  • Commitment to Quality: We prioritize thoughtful craftsmanship, energy efficiency, and durability in every build.
  • Experience You Can Count On: With years of experience in residential construction, our team delivers exceptional results.
Outdoor patio area featuring a round concrete fire pit with visible flames, surrounded by built-in corner bench seating made of horizontal composite boards. A tall palm tree and a block privacy wall frame the space, with a covered patio roof overhead

Does Adding an ADU Increase Property Value?

Yes, adding an ADU can significantly increase your property’s value. A well-designed, permitted ADU adds livable square footage, which appraisers consider when determining home value. Homes with ADUs often attract more buyers and can sell faster, especially in competitive markets like Phoenix.

Beyond square footage, ADUs add versatility—whether as a rental unit, guest space, or multi-generational housing option. This flexibility makes your property more appealing to a wider range of potential buyers.

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Guest Homes & ADU Projects

Frequently Asked Questions

From design and permitting to final construction, building an ADU typically takes 4 to 8 months, depending on the scope, permitting timelines, and site conditions. We provide a clear schedule during the planning phase.

Consider how the space will be used (guests, rental, office), available space on your lot, access and privacy, required utilities, and how the new structure will blend with your existing home. Budget, zoning regulations, and long-term goals are also key factors.

Yes. ADUs require building permits and must meet local zoning, setback, utility, and safety requirements. Miko LLC handles the entire permitting process to ensure compliance from the start.

Yes, you can rent your ADU in Arizona, including in cities like Phoenix and Scottsdale, as long as you comply with local zoning laws and building codes. Many municipalities allow long-term rentals by right, but there may be restrictions on short-term rentals depending on your location. Your ADU must meet all requirements for safety, occupancy, and permitting. Before renting, it’s important to verify local ordinances and ensure your unit is fully legal and up to code. Miko LLC can help guide you through the process to make sure everything is compliant from day one.

Most cities limit ADU size based on your lot size and zoning. For example, detached ADUs in Phoenix are generally limited to 1,000 square feet or a percentage of the main home’s size. We review all local codes as part of the planning process.

An ADU is a fully independent, legally recognized dwelling with a kitchen, bathroom, and separate entrance. A casita or guest house may not include a full kitchen or meet all ADU requirements, depending on local code. In many cases, they overlap and can be considered ADUs if built to code.

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