ADU Builder in Nicholtown, SC

Trusted Accessory Dwelling Unit (ADU) Builders in Nicholtown, SC

A home project this important deserves a builder homeowners can trust. Nunley Custom Homes has earned a strong reputation throughout Upstate South Carolina for dependable craftsmanship, clear communication, and beautiful finished spaces that feel like they have always belonged on the property.


Homeowners in Nicholtown often want more than extra square footage. They want peace of mind. At Nunley Custom Homes, we bring decades of licensed construction experience, careful planning, and dependable timelines to every project, so each accessory dwelling unit is built with care, precision, and long-lasting quality.

Call us at (864) 380-0724 to schedule your free consultation today.

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What Is an Accessory Dwelling Unit (ADU) and How Does It Work?

An Accessory Dwelling Unit (ADU) is a smaller, fully functional living space built on the same property as the main home. It can include a bedroom, bathroom, kitchen area, living space, and a private entrance, making it perfect for guests, family members, rental income, or even a private office.



In Nicholtown, many homeowners are choosing this option to create flexible spaces that grow with life's changes. It can be a place for aging parents, adult children, visiting family, or even a future rental opportunity. An ADU gives families more freedom, more function, and more ways to make the most of their property.

Why Choose Nunley Custom Homes for Your ADU

  • Local Expertise: Deep understanding of Greenville zoning, codes, and home styles.
  • 34+ Years of Experience: Proven craftsmanship and expertise in home additions.
  • Custom Designs: Each ADU is tailored for the homeowner's lifestyle and property.
  • Start-to-Finish Service: From concept to final walkthrough.
  • Transparent Pricing: Detailed estimates with no hidden fees.
  • Proven Reputation: Portfolio and testimonials reflect successful projects across Upstate SC.
  • Warranty & Support: Ongoing maintenance guidance after completion.

Every project by Nunley Custom Homes is custom-built — never prefab, never one-size-fits-all.

About Nunley Custom Homes and Our ADU Building Experience

With more than 34 years of experience as a licensed general contractor, Joe Nunley has built a trusted reputation for high-quality custom construction and remodeling. His background includes custom homes, major additions, renovations, and detailed residential projects that demand exceptional craftsmanship.


Today, at Nunley Custom Homes, we bring that same level of care to homeowners in Nicholtown. We approach every project with professionalism and a strong focus on lasting value, thoughtful design, transparent communication, and beautiful results that enhance the way families live every day.

Our Step-by-Step ADU Building Process

step 1 :

Consultation & Design

Goals, budget, and lifestyle needs are reviewed first. A custom plan is then created to fit the property naturally.

STEP 2 :

Permits & Compliance

The team handles zoning regulations, setbacks, lot coverage, height requirements, HOA approvals, and inspections.

step 3 :

Construction & Craftsmanship

Every detail is professionally managed, including framing, roofing, plumbing, HVAC, insulation, electrical work, and finishes.

step 4:

Final Walkthrough & Handover

A final review ensures every detail meets expectations before handover.

Popular ADU Types for Nicholtown Homes

  • Detached ADUs: Detached ADU are built separately from the main home, which gives homeowners more privacy and flexibility. They work well as guest houses, rental units, in-law suites, or quiet backyard retreats. This style is a great option for making the most of yard space without changing the footprint of the main house.

  • Attached ADUs: Attached ADUs connect directly to the main home while still creating a separate living area. They are a smart choice for families who want loved ones close by without giving up privacy. This style can also blend nicely with the existing design of the home.

  • Garage Conversions or Above-Garage ADUs: Garage spaces can be turned into comfortable living areas, or a new unit can be built above the garage. These layouts are great for guest rooms, rental spaces, home offices, or studio-style apartments. They also help preserve yard space while adding practical square footage.

  • Basement and Attic ADUs: Basement and attic ADUs make use of space that may already be part of the home but is not being fully used. With the right planning for light, insulation, access, and comfort, these areas can become highly functional living spaces. This option can be a smart way to add value without expanding outward.

Every project by Nunley Custom Homes is custom-built — never prefab, never one-size-fits-all.

ADU Permits, Codes, and Zoning Requirements in Greenville County

Building an ADU in Nicholtown starts with understanding the local rules and requirements in Greenville County. At Nunley Custom Homes, we help guide homeowners through the permitting process from start to finish so the project stays compliant, efficient, and as stress-free as possible.

Zoning and Setback Requirements


Every ADU must follow Greenville County zoning guidelines, including height restrictions, lot coverage limits, and required setbacks from property lines. These rules help protect neighborhood character and reduce the risk of delays or costly design changes during construction.


In most cases, an ADU cannot exceed 50% of the primary home’s total floor area. For example, a 2,500 square foot home may allow for an ADU up to 1,250 square feet, providing plenty of space while keeping the unit secondary to the main residence.

HOA Approvals


Some Nicholtown neighborhoods may have HOA design guidelines or approval requirements. We help review those standards early in the process to make sure the ADU design aligns with community expectations and avoids unnecessary delays.


Inspections and Code Compliance

Plumbing, electrical, structural, and final inspections are all important parts of the process. Our team helps coordinate these steps and ensures all required documentation is properly handled so the project moves forward smoothly. 

Custom Homes - Design-Build

Complete planning begins with architect collaboration, detailed specifications, and allowance books that help every detail stay organized. Milestone walkthroughs help ensure the finished space matches the original vision and budget.

Remodeling and Additions

Whole-home renovations and additions are designed to blend naturally with the original structure. Each space is built to look seamless rather than feeling like something added later.

Kitchen and Bathroom Remodeling

Smart layouts help improve flow, storage, and everyday comfort. Proper waterproofing, ventilation, and coordinated finishes keep the project efficient and built to last.

  • More Flexible Living Space: An ADU gives homeowners extra room that can be used in many different ways. It can serve as a guest house, home office, rental space, or a comfortable place for family members to stay.


  • Added Long-Term Property Value: A thoughtfully designed ADU can make a property more useful and more attractive over time. Buyers often see extra living space as a major benefit, especially when it is private and well built.


  • Income and Family Support: An ADU can create rental income opportunities while also giving loved ones a place to live nearby. It offers a smart balance of independence, convenience, and long-term practicality.


  • A Smarter Use of Your Property: Unused backyard space, garages, basements, or attic areas can be turned into something functional and valuable. Instead of expanding in a way that feels disconnected, an ADU helps make the most of the property that is already there.
A bright, modern white bathroom featuring a freestanding tub, geometric tile floors, a double vanity, and black accents.

Tiny Home Style ADUs 

This a compact, highly efficient space designed to make the most of limited square footage. Features like built-in storage, open layouts, and multifunctional spaces make them a great choice for smaller lots or homeowners looking for a simple, cost-effective design.

Modular ADUs

Modular ADUs are prefabricated units that are built off-site and then delivered to your property for installation. This style often allows for faster construction timelines, more predictable costs, and less disruption to daily life during the build process.

Stick-Built ADUs

Constructed directly on-site using traditional building methods. This option allows for full customization and helps the new space blend seamlessly with the existing architecture, materials, and overall style of the home.

Tiny Home Style ADUs 

This a compact, highly efficient space designed to make the most of limited square footage. Features like built-in storage, open layouts, and multifunctional spaces make them a great choice for smaller lots or homeowners looking for a simple, cost-effective design.

Sustainability-Focused ADUs

Sustainability-focused ADUs are built with energy efficiency and environmental impact in mind. Features may include solar panels, energy-efficient insulation, smart windows, and other eco-friendly design elements that can help reduce long-term utility costs.

Start Your ADU Project in Nicholtown, SC Today

Free estimates are available to help homeowners better understand the best direction for their property and goals. In-person estimates are strongly recommended because they allow for more accurate pricing, smarter planning, and design recommendations that fit the layout, space, and long-term vision for the home.


Reach out to Nunley Custom Homes and call at 864-380-0724 to schedule a free estimate for your Nicholtown, SC property. A well-planned addition can create more room, more comfort, and more future possibilities for everyday living. The right project can add beauty, function, and value to a home, and it can all begin with an ADU.

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