Design. Plan. Build.
Home Addition Contractor
Greenville, SC
Greenville's Top Home Addition Contractor in The Upstate, SC
Is your home starting to feel cramped as your family grows or your lifestyle changes? Moving isn’t always the best solution, especially if you love your neighborhood, school district, or the memories built in your current home. Greenville County’s population has surged significantly, increasing by approximately 27.8% from 2010 to 2025, growing from about 452,700 to 578,400 residents. This rapid growth is driving demand for larger and more versatile homes, making now the perfect time to invest in a custom home addition.A home addition is one of the smartest ways to expand your living space, increase comfort, and boost property value without uprooting your life.
At Nunley Custom Homes, we specialize in building custom home additions in Greenville and across Upstate South Carolina. With decades of experience, our team designs and builds seamless additions that blend perfectly with your home’s architecture while providing the functionality you need. Whether you’re dreaming of an in-law suite, a new bedroom, or a second-story addition, we bring your vision to life with precision and care.
Call us today at (864) 380-0724 to schedule your consultation!
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Why Consider a Home Addition in Greenville, SC?
Home additions do more than add square footage, they improve functionality, comfort, and long-term property value. According to Remodeling Magazine’s 2023 Cost vs. Value Report , major home additions such as family rooms or primary suites in the Southeast region typically recoup 50–65% of their cost at resale , making them a strong investment for homeowners in Greenville and Upstate SC.
A home addition may be the right solution if:
- Growing Household Needs – Expanding families, multi-generational living, or caring for aging parents often require additional bedrooms, bathrooms, or in-law suites.
- Rental Income Potential – Adding an Accessory Dwelling Unit (ADU) or basement apartment can create a secondary income stream while meeting Greenville’s increasing demand for rental housing.
- Work-from-Home Lifestyle – A dedicated home office provides a quiet, professional environment that boosts productivity and separates work from family life.
- Location Loyalty – If you love your current neighborhood, schools, or commute, an addition lets you stay in place while gaining the extra space you need.
- Better Functionality – Many homeowners in Greenville choose additions to open up restrictive layouts , expand kitchens, or add functional living areas like family rooms and mudrooms.
Instead of starting over with a new house, expanding your current one allows you to customize your space , increase resale value, and maintain your investment in a home and community you already love.
Types of Home Additions We Do in Greenville, SC & The Upstate
Every family’s needs are different, and at Nunley Custom Homes we design and build additions that fit your goals, lifestyle, and budget. Here are some common types of additions we deliver, along with real-world scenarios where they make sense:
Three-Season Sunrooms
Perfect when your family is growing. For example, many Greenville homeowners add a
new bedroom and bath when welcoming a new baby or when two kids no longer want to share a room.
Bump-Out Additions
A small expansion can make a big difference. Imagine extending your
kitchen by 3–4 feet, suddenly you’ve got space for a center island, larger dining table, or more natural light.
Second-Story Additions
Second-Story Additions – If your lot size is limited, building upward doubles your square footage without sacrificing yard space. Great for families who love their neighborhood but have outgrown their home.
In-Law Suites / ADUs
In-Law Suites / ADUs – With multi-generational living on the rise, many clients choose
private suites with a bedroom, bath, and kitchenette. Some use them for aging parents, while others create rental-ready
Accessory Dwelling Units for extra income.
Sunrooms & Four-Season Rooms
Sunrooms & Four-Season Rooms – A popular choice in Upstate SC, where the climate allows you to enjoy natural light most of the year. Families often use them as playrooms, hobby spaces, or quiet retreats.
Basement Conversions
Basement Conversions – Instead of wasted storage space, unfinished basements can become media rooms, teen hangouts, or rental apartments. This is one of the most cost-effective ways to gain livable square footage.
Garage Conversions
Garage Conversions – An unused garage can become a home gym, guest suite, or office. We’ve helped several remote workers in Greenville turn garages into soundproofed, climate-controlled workspaces.
Dormer Additions
Dormer Additions – Ideal for older homes in Greenville with steep rooflines. Adding dormers not only improves curb appeal but also creates usable headroom and natural light in attics, turning them into functional bedrooms or offices.
Whether your project is small-scale or a major expansion, our goal is to create an addition that feels like it’s always been part of your home, seamless in design, practical in function, and a smart investment for the future.
Our Home Addition Process
We know additions are a major investment. That’s why Nunley Custom Homes follows a proven step-by-step process to ensure your project runs smoothly:
- Initial Consultation & Design – We meet with you to understand your needs, goals, and budget. Then, our design team creates a plan tailored to your vision.
- Permits & Approvals – Greenville County requires permits for most additions. We handle the paperwork, approvals, and inspections so you don’t have to.
- Construction & Project Management – Our skilled builders bring your design to life with quality craftsmanship and strict adherence to timelines.
- Finishing & Final Walkthrough – We ensure every detail meets our standards before completing the project.
Ready to Add an Addtion to Your Home?
Bring more light, comfort, and style to your Greenville home with a custom sunroom addition. Call our experts today at (864)380-0724 to schedule your free consultation and start planning your dream space.
Key Considerations Before Deciding on a Home Addition
When planning a home addition in Greenville or Upstate SC, here are important factors to keep in mind
- Building Codes & Zoning: Greenville County requires permits for most structural changes. Nunley handles the compliance process for you.
- Structural Impact: Additions often require foundation, roofline, and load-bearing wall adjustments.
- Utilities: Plumbing, HVAC, and electrical upgrades may be needed.
- Timeline: Smaller projects can take 2–3 months; larger additions may take 6+ months.
- Budgeting: Beyond construction, factor in design, permits, and finishes.
We anticipate these challenges early, helping you plan and budget effectively.
How Much Does a Home Addition Cost in Greenville, SC?
On average, a home addition in Greenville costs $125 to $250 per square foot, including labor and materials..
The cost of a home addition depends on the project’s size, complexity, and finish level. In Greenville, homeowners can expect a wide range of pricing depending on the type of addition:
- Bump-Out Additions – $50,000–$75,000+
- Room Additions (Bedroom, Bathroom, etc.) – $75,000–$100,000+
- In-Law Suites / Secondary Suites – $100,000–$150,000+
- Second-Story Additions – $150,000–$300,000+ (depending on structure and finishes)
Home Addition Cost by Size in Upstate, SC
| Room Addition Size | Square Footage | Average Cost |
|---|---|---|
| 10x10 | 100 SF | $12,500 – $25,000 |
| 10x20 | 200 SF | $25,000 – $50,000 |
| 12x12 | 144 SF | $18,000 – $36,000 |
| 20x20 | 400 SF | $50,000 – $100,000 |
| 20x30 | 600 SF | $75,000 – $150,000 |
| 15x40 | 600 SF | $75,000 – $150,000 |
| 20x40 | 800 SF | $100,000 – $200,000 |
| 25x40 | 1,000 SF | $125,000 – $250,000 |
We Follow Upstate Compliance and Regulations for Home Additions
When it comes to home additions, we make sure everything meets local codes and safety standards. Our team takes care of the details so you don’t have to worry.
Permits and Zoning
We handle the permit applications and zoning approvals required in Greenville County and Upstate SC, keeping your project on track.
We ensure every addition ties securely into your home, with proper foundation support, load-bearing walls, fire safety, and egress where needed.
Energy Efficiency
We follow energy code requirements for insulation, HVAC, and ventilation. Our goal is to give you a comfortable, efficient space that also saves on utilities.
Accessibility
If your project calls for accessibility, we can design wider doorways, no-step entries, and other features that make your home easier to use.
Our Approach
From permits to final inspections, we stay in compliance every step of the way so your new space is safe, efficient, and built to last.
Warranty & Suppport
Every project comes with a warranty, and we remain available for guidance or maintenance after completion.
Why Choose Nunley Custom Homes for Your Home Addition in Greenville?
When you choose Nunley Custom Homes, you’re working with a team of licensed, insured, and experienced home addition contractors trusted across Greenville and the Upstate.
- Over 35 years of combined experience in additions and remodeling.
- Knowledge of local zoning laws and building codes in Greenville & surrounding counties.
- Seamless design-to-build process with transparent pricing.
- Focus on high-quality craftsmanship and energy-efficient solutions.
- Personalized service that prioritizes your lifestyle, comfort, and budget.
Call us today at (864) 380-0724 or request a consultation online to start planning your home addition.
FAQs About Home Additions in Greenville, SC
How long does a home addition project take?
A small room addition usually takes 8–12 weeks, while larger projects like full in-law suites or second-story additions can take 4–6 months, depending on complexity and permits.
Do I need permits for a home addition in Greenville?
Yes, most additions require city or county permits and inspections. We handle the entire permitting process to keep your project compliant and stress-free.
What’s the average cost of a home addition?
Home additions in Greenville typically range from $125 to $250 per sq. ft. Costs depend on size, design, and finishes, with most projects falling between $50,000 and $150,000+.
How much would a 20x20 addition cost?
A 20x20 addition (400 sq. ft.) generally costs between $50,000 and $100,000, depending on features like flooring, roofing, and interior finishes.
Is it cheaper to build a house or add an addition?
In most cases, adding an addition is more cost-effective than building a new house, since you’re expanding your existing structure rather than starting from scratch.
Can you match my home’s style and finishes?
Yes. We carefully source materials and design details so your new space blends seamlessly with your existing home’s architecture and aesthetics.
Will a home addition increase my property value?
Most additions add value, especially bedrooms, bathrooms, and in-law suites. They make your home more functional and often deliver a strong ROI at resale.
Ready to Expand Your Home?
If you’re searching for trusted home addition builders in Greenville, SC and the Upstate, look no further than Nunley Custom Homes. We help families like yours design and build additions that enhance comfort, value, and lifestyle, without the stress of moving.
Call (864) 380-0724 or fill out our contact form today to schedule your consultation!