our accessory dwelling unit (ADU) services

What an ADU home addition can look like when you work with us:

  • Custom ADU design and planning

  • Integrated architecture and interior design

  • Detached guest houses and in-law suites

  • Attached ADU construction and upgrades

  • High-end finishes and custom millwork

  • Aging-in-place and multigenerational design

  • Full permitting and zoning compliance for Charlotte

  • Luxury design, finishes, and features

  • Turnkey construction management from start to finish

Bright bathroom vanity with natural light and elegant fixtures by Simonini Homes in Chapel Hill, NC

Why choose Simonini Homes as your ADU contractor 

As an ADU contractor in Charlotte, our team at Simonini Homes delivers more than just construction; we offer a partnership rooted in trust, vision, and legacy. Our team understands the complexities of North Carolina ADU regulations, ensuring your investment is both compliant and long-lasting. From your very first consultation to the long-awaited final walkthrough, we guide you through every phase of the process. Whether you're searching for an ADU builder near your home or a team that specializes in luxury in-law suite construction, Simonini Homes is the name Charlotte homeowners trust. We understand the specific zoning requirements for ADUs in Charlotte. When you work with us, you can trust that we're the contractor for the job. Our knowledge of processes and building codes is only matched by our knowledge of the best materials and tradespeople. With our team, you get an experience like no other. Whether you want an official ADU or a similar type of addition, we'll guide you through the decision-making process and help you find the outcome that is perfect for your property. 

Lake House Refresh
Covered Terrace Renovation
Guest House Renovation
Whole House Renovation

OUR WORK SPEAKS FOR ITSELF.

Explore some of the impressive renovations projects our team has completed recently.

Our Process

No two projects are identical, but our team offers a process that brings your ADU to life. 

Renovations-Process-StepOne

You'll have an initial consultation with your team to assess the project, develop the scope, and establish goals and a timeline.

Renovations-Process-StepTwo

Next, you'll work with our in-house design team to develop a custom ADU that exceeds your expectations and matches your needs and goals. 

Renovations-Process-StepThree

Your building team will work alongside our trusted vendors to ensure every detail of your ADU is just right for your lifestyle and property. 

Renovations-Process-StepFour

Once your ADU addition is finished, you'll do a final walk-through with the team. Then, you will be able to enjoy your transformed space.

Your accessory dwelling unit builder in Charlotte

Building an ADU in North Carolina requires more than permits and plans; it requires a builder who understands how to navigate zoning, optimize layouts, and elevate design. Our team at Simonini Homes creates refined living spaces that meet legal standards while increasing property value. We build detached ADUs, garage conversions, in-law suites, and other ADU programs designed to serve multi-generational families or income-generating rentals with style. You can rest easy knowing we build ADU additions with the same attention to detail as our custom homes and other home renovation services. No matter what your goals are, we work hard to help you reach them. With something as nuanced as an ADU, having a builder who understands the regulations, has a locked-in process, and a broad portfolio is important. You can take a look at our cost guide resource to see what your future ADU might cost and start planning. 

Contact us

Contact us today for a consultation or to learn more about adding an ADU to your property. 

FAQs About Accessory Dwelling Unit Additions

Why Are ADUs So Popular?

In Charlotte and across North Carolina, ADUs are rising in popularity because they solve real, everyday needs. Homeowners are building ADUs to accommodate aging parents, provide private space for adult children, or create rental income opportunities.

They're also an ideal solution for multigenerational living, guest accommodations, or future resale value. As housing trends evolve, families are looking for smart, flexible ways to get more out of their property, and ADUs offer exactly that. With the right planning and builder, they’re a practical investment with lasting benefits.

Are ADUs Allowed in Charlotte?

Yes, but with restrictions. While ADUs are allowed in Charlotte, not every property qualifies for the official definition due to local zoning laws. For example, setbacks, lot size, and utility connections all impact whether an official Accessory Dwelling Unit is permitted. Our team has deep knowledge of North Carolina ADU laws and will help you explore compliant options for carriage houses, garage conversions, or mother-in-law suites.

What Is the Definition of an ADU?

An Accessory Dwelling Unit (ADU) is a secondary residential unit that is fully self-contained, located on the same property as a single-family home. It must have its own kitchen, bathroom, and entrance. However, in Charlotte, a detached guest space without all of these features may not qualify as an ADU under current regulations. As an experienced contractor, we can help you distinguish between ADUs and other structures to ensure code compliance.

How much does an ADU cost in Charlotte, NC?

The cost of an ADU in Charlotte ranges widely based on size, finishes, and site conditions. A well-built 500 sqft ADU may start around $150,000, while larger or more complex projects can exceed $300,000. We ensure your investment delivers long-term value, beauty, and functionality.

Whether an ADU is detached or attached, the features or finishes you choose, and its size all factor into the total cost of your unit. 

What Are the Disadvantages of an ADU?

While ADUs offer flexibility and potential rental income, they come with a few considerations. First, local zoning restrictions in Charlotte and across North Carolina can be complex, making it difficult to qualify for a fully permitted ADU. Not all properties meet the criteria, and in some cases, you may only be able to build a guest space that doesn't meet the legal definition. Second, the cost of an ADU can be significant due to site prep, utility connections, and permitting. Finally, because ADUs increase density, there may be neighborhood pushback or HOA restrictions.

Renovated kitchen with sleek marble countertop and black cabinetry by Simonini Homes in Charlotte, NC

Everyone we interacted with was outstanding. The professionalism of the entire team from sales, design, project management, construction and installation were great! Your team and their skills will be what I will mention to others when asking about our kitchen project.
James L.
Renovations
Remodeled entryway and living area with large windows and white furniture by Simonini Homes in Charlotte, NC

Quality craftsmanship, ability to troubleshoot, accurate accounting and attention to detail. We used them for two renovations now and recommend Simonini to everyone we know!
Marc M.
Renovations
Bright remodeled kitchen and dining area in Charlotte, NC by Simonini Homes

Simonini Homes did a fantastic job on our renovation, from beginning concept planning to end! They had very high standards for their sub-contractors, which we very much appreciated. Things were redone if they weren’t up to Simonini’s standards. We’ve done other building projects in Charlotte, using other contractors, but now we wouldn’t work with anyone else besides Simonini.
John P.
Renovations

BETTER BUILDER EXPERIENCE


OUR PROCESS

EXCELLENCE IN
EVERYTHING


MEET LEADERSHIP

STYLISH FROM
START TO FINISH


DESIGN STUDIO

Where We Work

Simonini Homes proudly provides luxury custom homes and remodeling in the following areas: 

Charlotte

Davidson

Cornelius

Mooresville

Waxhaw

Weddington

Lancaster

 

Fort Lawn

Fort Mill

Myers Park

Eastover

Foxcroft

SouthPark

Ballantyne

Raleigh / Durham / Chapel Hill (Custom Homes)

Contact us to find out if we serve your area!

LET’S TALK
RENOVATIONS.

If you have questions or are ready to move forward with a Renovations project, please fill out this form and we’ll be in touch quickly. We can’t wait to meet you.