• 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 SouthPark 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 Fort Mill 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 SouthPark 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 SouthPark home, ready for you to enjoy.

• Where We Build
Costner Building Group proudly serves the upscale SouthPark neighborhood and extends its luxury renovation services to nearby communities such as Ballantyne, Mint Hill, and the wider Charlotte, NC area, as well as Fort Mill, SC.
Ballantyne
SouthPark
Waxhaw
Mint Hill
Charlotte, NC
Indian Land
Fort Mill
Rock Hill
Lake Norman
Mecklenburg County
Union County

• Local Expertise
Choosing a local renovation contractor like Costner Building Group for your SouthPark home means partnering with a team deeply familiar with Charlotte's unique architectural styles and local regulations. Our proximity ensures prompt responsiveness and personalized attention throughout your project. Being licensed in both North Carolina and South Carolina, we possess comprehensive knowledge of regional building codes and the specific challenges posed by the Carolina climate, allowing us to implement durable and energy-efficient solutions tailored to your home.
• 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
Embark on your luxury home renovation journey with Costner Building Group, your trusted partner for exceptional craftsmanship and a healthier living environment in SouthPark. Discover the difference that meticulous attention to detail and a client-focused approach can make.
Book a Consultation• Common Questions
What types of home renovations do you specialize in SouthPark?
We specialize in high-end whole-home renovations, kitchen remodels, bathroom renovations, and healthy home upgrades throughout SouthPark and the greater Mecklenburg County area.
How does Costner Building Group ensure a healthy home environment during renovations?
We integrate building science principles, focusing on indoor air quality, advanced ventilation, clean water systems, and the use of non-toxic materials to create a healthier living space.
Can I see examples of your renovation projects in the Charlotte area?
While we don't display specific project addresses for client privacy, we can discuss our portfolio of luxury renovations and the quality standards we uphold in the Charlotte region during your consultation.
Are you licensed to perform renovations in both North and South Carolina?
Yes, Costner Building Group is fully licensed in both North Carolina and South Carolina, providing comprehensive renovation services across state lines, including areas bordering SouthPark.
What makes your renovation process transparent for SouthPark homeowners?
We utilize JobTread project management software, offering SouthPark homeowners real-time access to schedules, budgets, and communication, ensuring complete transparency throughout the renovation process.