How Much Is an Addition or ADU Project in Phoenix?

If you’re a homeowner in Metro Phoenix, considering an addition or an accessory dwelling unit (ADU) is a great way to increase your home’s value and enjoy additional living space. This guide answers the most common questions about the costs, zoning regulations, and budget strategies for ADUs and home additions in Scottsdale, Phoenix, and their surrounding areas. Continue reading to learn everything you need to know.

What is the Cost Range for Building an Addition or ADU in Phoenix?

Adding space to your home is a significant investment that adds equity and livability. The cost of these projects varies significantly based on various factors we'll break down later. Here's more insight into the costs of different additions and ADU projects: 

Full Bathroom Addition

A full-bathroom addition home remodel in Phoenix can cost between $550 and $700 per square foot, with total costs starting around $150,000 and going up to $250,000 or more. Bathrooms designed with accessibility, such as larger showers or wider doorways, are common and can add to the project’s overall value.

Mudroom or Laundry Room Addition

For those looking to add functionality to their home, a mudroom or laundry room addition typically costs between $550 and $650 per square foot, or $100,000 to $175,000. This addition helps keep your home clean and organized, which is essential in a desert landscape like Phoenix’s, where dust and dirt can quickly accumulate.

Secondary Story Addition

Adding a second story is a transformative way to double your living space, with costs similar to bathroom additions at $550 to $700 per square foot. With a price tag ranging from $250,000 to $500,000, it’s crucial to work with a trusted contractor to ensure your home can structurally support the addition.

ADUs

Accessory dwelling units (ADUs) start at around $150,000 and cost between $550 and $700 per square foot. These are popular for homeowners in Metro Phoenix looking to add rental income or space for family members. With rising interest in ADUs, these units are a smart investment.

Factors That Impact Addition and ADU Costs

Multiple factors, including materials, zoning laws, and the project's complexity, influence the cost of building an addition or ADU in Phoenix. Let’s break down how each factor plays a role.

Materials

The cost of materials, from high-end finishes to basic construction elements, directly impacts your budget. In Phoenix, many homeowners opt for a mix of desert-friendly materials, such as concrete and tile, to ensure durability in the desert climate.

Zoning and Building Codes

Local zoning and building codes can significantly affect the cost and feasibility of any Phoenix home remodel. The area has specific regulations that can impact the size, height, and location of an addition or ADU. MGD Builders’ extensive experience with these codes ensures smooth approvals.

Size

The larger your addition, the higher the cost. It’s essential to design with both functionality and future needs in mind, ensuring you’re investing in space that will grow with your family. Working with experienced home addition contractors in Phoenix helps streamline the process, making sure every square foot is used wisely.

Scope of Work

More complex designs, like tying an addition to your existing structure or adding new plumbing and electrical systems, can raise costs. These intricate projects require precise planning and expert craftsmanship to blend old and new seamlessly and meet local building codes. At MGD Builders, our team helps you navigate these complexities, ensuring the project stays on track and within budget while delivering a flawless finish.

ROOFLINE Tie In

For most home additions, especially second stories or full bathroom extensions, integrating the new roof with the existing one is a must. However, for ADUs, this isn’t always necessary, which can help keep costs down.

What Strategies Can Homeowners Use to Ensure Their Addition or ADU Stays Within Budget?

Adding to your home is exciting, but keeping it within budget requires precise planning. Here are some strategies to help ensure your project runs smoothly and cost-effectively.

Only Pay for the Space You Need

It’s easy to get carried away when planning an addition, but it’s essential to focus on creating only the space that meets your needs. You can avoid overbuilding and stay within your budget by sticking to your must-haves.

Mix Mid-Range and High-Range Materials

Combining mid-range and high-end materials allows you to achieve a luxurious look without overspending. Phoenix homeowners often choose stucco and tile for long-lasting beauty in our desert environment.

Add Room in Your Budget for Contingencies

Setting aside 10% to 20% of your total budget is wise for any home addition project. Surprise issues, like electrical upgrades or plumbing repairs, don't happen often but can quickly eat into your budget if you’re not prepared.

Uses for Room Additions and ADUs

Phoenix homeowners are finding innovative ways to use their new space. Whether you’re looking to create a home office or a rental unit, here are a few common uses for room additions and ADUs.

Space for Hobbies

Many Phoenix homeowners use their additions for creative hobbies, from art studios to workshops. At MGD Builders, we offer 3D renderings to help you envision exactly how the space will look and function.

Host Guests

Guest rooms are always a popular addition, especially if you regularly play host. Adding a guest suite to your home or building an ADU on your lot provides comfort and privacy for your frequent visitors.

Make Extra Income

ADUs are a fantastic way to generate rental income. Whether it’s a long-term tenant or a vacation rental, ADUs offer flexibility and return on investment. Some homeowners even rent out their homes for rental income, use that money to travel the world, and stay in their ADUs when it's time to come home.

Home Gym

In Phoenix, many homeowners are turning their additions into home gyms, providing a convenient space to stay active year-round. This is especially helpful during the scorching summer months when outdoor workouts become less practical due to the intense heat.

Extra Storage

Who couldn’t use more storage? Adding a mudroom or an additional space helps keep your home organized and clutter-free. It's also a great way to keep your adult children's belongings safe and packed away for when they need them.

Build Your Dream Space with MGD Builders

As one of the best home addition and ADU contractors in Phoenix, AZ, trust that MGD Builders can bring your home addition and ADU vision to life. With over a decade of experience serving Metro Phoenix, we prioritize building strong relationships with every client. From 3D renderings that bridge the imagination gap to our 11-month post-project walkthrough, we’re committed to creating homes that add lasting value.

Ready to start your project? Contact us today to schedule a consultation!