• Why Choose Us
01
Building Science Expertise
We prioritize your family's well-being by integrating advanced building science principles, ensuring healthier indoor air quality, clean water solutions, and abundant natural light in your renovated home.
02
Transparent Project Management
Experience complete peace of mind with our JobTread project management software, providing you with real-time updates, budget tracking, and clear communication throughout your renovation journey.
03
Collaborative Design Process
Whether you have an architect in mind or need connections to trusted local designers, we foster a collaborative environment to bring your unique vision to life with precision and care.
04
Dual-State Licensed
As a fully licensed general contractor in both North Carolina and South Carolina, we offer comprehensive, compliant, and high-quality renovation services right here in the Waxhaw area.
05
New-Build Quality in Every Detail
We apply the meticulous craftsmanship and superior material standards typically reserved for new custom homes to your renovation, ensuring lasting beauty and exceptional performance.

• Our Services
01
Whole-Home Renovations
Imagine your entire Ballantyne residence reimagined with a cohesive design and enhanced functionality. Our whole-home renovations transform your living space, optimizing every room to reflect your personal style and meet your evolving needs.
02
Kitchen Remodels
Elevate the heart of your Waxhaw home with a custom kitchen remodel. We design and build culinary spaces that blend sophisticated aesthetics with optimal functionality, tailored to your lifestyle.
03
Bathroom Renovations
Indulge in a luxurious and serene escape with a bespoke bathroom renovation. We craft spa-like environments that combine elegant finishes with practical design, enhancing your daily routine.
04
Healthy Home Upgrades
Invest in your family's well-being with healthy home upgrades focused on indoor air quality, advanced ventilation, non-toxic material selection, and maximizing natural light for a truly restorative living environment.
• How We Work
01
Consultation
We begin by listening intently to your vision, understanding your aspirations for your Waxhaw home, and discussing the possibilities for your renovation project. This initial conversation sets the foundation for a successful partnership.
02
Planning / Inspection
Our team conducts a thorough inspection of your property and develops a detailed plan, including design concepts, material selections, and a transparent budget. We ensure every aspect aligns with your goals and our commitment to excellence.
03
Execution
With meticulous attention to detail and superior craftsmanship, our skilled team brings your renovation plans to life. We manage every phase of construction, ensuring quality and efficiency while keeping you informed through JobTread.
04
Final Check / Delivery
Upon completion, we conduct a comprehensive final walkthrough to ensure every detail meets our rigorous standards and your complete satisfaction. We then proudly deliver your beautifully transformed Waxhaw home, ready for you to enjoy.

• Where We Build
While we love transforming homes right here in Waxhaw, our renovation services extend to neighboring communities across the region. We proudly serve homeowners in nearby Indian Land, SC, Ballantyne, NC, and throughout the greater Charlotte area.
Ballantyne
SouthPark
Waxhaw
Mint Hill
Charlotte, NC
Indian Land
Fort Mill
Rock Hill
Lake Norman
Mecklenburg County
Union County

• Local Expertise
Selecting a local contractor like Costner Building Group means partnering with a team that truly understands the nuances of building in the Carolinas. From navigating Union County permitting processes to selecting materials that perform beautifully in our distinct climate, our local expertise ensures a smoother, more efficient renovation experience.
Furthermore, being fully licensed in both North and South Carolina gives us the flexibility and deep regional knowledge required to handle complex projects. Our proximity to Waxhaw means we are always highly responsive and present on your job site, providing the personalized attention and accountability that out-of-town firms simply cannot match.
• Client Stories
"
They listened, guided, and delivered exactly what we envisioned — only better. The craftsmanship is unmatched, and the home feels designed around our lives.
Homeowner, Charlotte NC
"
The transparency throughout the entire build was remarkable. We always knew exactly where our project stood. Costner Building Group exceeded every expectation.
Custom Home, Ballantyne NC
"
From the first consultation to move-in day, the team was professional, attentive, and genuinely cared about building us a healthier home. We couldn't be happier.
Custom Home, Waxhaw NC
• Get Started Today
Don't wait to create the luxurious, healthy living space your family deserves. Trust the local experts at Costner Building Group to deliver unparalleled craftsmanship and a stress-free renovation experience.
Book a Consultation• Common Questions
Do you handle the design phase of a home renovation in Waxhaw?
Yes, we offer a highly collaborative approach. We can work directly with your chosen architect or connect you with our network of trusted local designers to ensure your vision is perfectly translated into actionable plans.
How do you ensure my home's indoor air quality improves during a renovation?
We apply advanced building science principles to every project. This includes installing high-performance ventilation systems, utilizing low-VOC and non-toxic materials, and sealing the building envelope to significantly enhance your indoor air quality.
Will I be able to track the progress of my renovation?
Absolutely. We utilize JobTread project management software, which provides you with a dedicated client portal. You can log in anytime to view daily logs, schedule updates, financial tracking, and progress photos.
Do you manage all the necessary permits for a renovation in Waxhaw, NC?
Yes, our experienced team handles the entire permitting process on your behalf. We are deeply familiar with local building codes in Waxhaw and Union County, ensuring your project is fully compliant and stays on schedule.
How long does a typical whole-home renovation take?
The timeline varies based on the scope and complexity of the project. During our planning phase, we provide a detailed, realistic schedule, and our proactive management ensures we meet our deadlines without compromising on our new-build quality standards.