How Much Does an Addition Cost in Knoxville, TN?

On average in Knoxville, a home addition falls in the $75,000 to $350,000+ range, depending on the size, scope, and finishes. This range is quite large because there are many different types of additions and each one has their own specific range, and your particular project will have its distinct price. 

Several important factors influence how much your addition will cost. You can take a look at our cost guide to get a deeper idea of how each factor impacts your price and even glance at the cost of a custom home to complete your research. Whether you’re planning a new bedroom, a larger kitchen, a sunroom, or even a second story, understanding these variables helps you plan smarter and avoid surprises.

1. Size of the Addition

Naturally, the larger the addition, the higher the total cost. While homeowners often want a ballpark based on square footage, total project cost gives a more complete picture, since even smaller additions carry fixed costs like design, permits, and foundation work.

2. Type of Room

Different rooms come with different price tags. A bedroom or living room will typically cost less than a kitchen expansion because plumbing, ventilation, and specialized fixtures add complexity. The most valuable home additions, like primary suites, sunrooms, and expanded kitchens, tend to involve more systems and more return on investment.

3. Foundation and Site Conditions

Sloped lots, drainage issues, or difficult access can add to your costs. Many homeowners in East Tennessee find themselves searching for a basement waterproofing specialist before adding to a basement or remodeling it. No matter what your project is, a solid foundation is important. 

4. Roofing and Structural Integration

Connecting your new addition to your existing structure, especially the roof, is one of the trickiest parts of the build. If you're adding a second-story addition or tying into a complex roofline, expect additional engineering and structural costs.

5. Interior Finishes and Fixtures

Cabinetry, flooring, lighting, tile, and trim levels can all shift your total cost. At Debuty Builders, Inc., we walk you through all finish options early in the process, so there are no budget surprises. The price of materials can change, but we will also be transparent about any changes in cost. 

6. Permits and Code Compliance

Every addition must meet local code and permitting requirements. Working with a licensed remodeling contractor ensures inspections pass the first time and your project stays on track.

7. your addition team

You want only the best team to design and build your project. Sometimes, the best teams aren't the ones with the lowest bid, but the ones that can back their price with experience, knowledge, and previous work. Your contractor is an important part of your overall budget, including giving you the best value for your money with excellent work. 

Popular Types of Additions

What are the most popular types of additions in East Tennessee? These are some of the home additions we see most often, but it doesn't mean they're the right type for you. Always work with your team to find the best sort of addition for your home. 

Primary Suite Addition

This common choice includes a bedroom, walk-in closet, and full ensuite bathroom. It adds both livable space and long-term value, making it one of the most valuable home additions for modern families.

Second-Story Addition

A great option when lot space is limited, a second story can dramatically increase your living space without expanding your home’s footprint. This is especially ideal for homeowners who love their location but need more room to grow. However, it is also one of the more expensive types of additions simply because of the extra structural work and time required for a two-story remodel. 

bedroom Addition

A bedroom addition is an easy way to increase your home's value and usefulness. It can also be one of the less pricey types of additions that gives you the best ROI. It's worth it to consider adding another bedroom to your home. 

Kitchen Expansion or Bump-Out

Expanding the kitchen creates better flow, more storage, and room for entertaining. These projects often involve structural and mechanical upgrades, contributing to their higher investment level. You can take a look at the timeline of a kitchen remodel and think about how an expansion adds more structural work to the project. 

Living Room or Family Room Additions

These spaces often improve daily function and boost resale value. The right layout and integration to the rest of your home can make your lifestyle more comfortable and in your daily living.

What home additions add the most value?

The best home addition is one that fits your lifestyle, enhances functionality, and adds long-term value. Some of the most requested, and best home additions, in Knoxville include:

• A first-floor primary suite (ideal for aging in place)

• A second-story addition for growing families

• A kitchen expansion to improve flow and function

• A sunroom for natural light and year-round enjoyment

• A home office or bonus room

• Basement finishing, if your home already has dry, usable space

Whether you’re expanding out or building up, choosing the right remodeling contractor is essential to success. Don't forget that your home addition should add financial value and lifestyle value. Don't add a space that you may not want just to increase your house's overall value. Instead, choose a home addition that makes sense for you. 

Your Knoxville Home Addition Contractor

When planning a home addition, working with a contractor who’s local to Knoxville offers real advantages. You want a team that understands local zoning, building codes, and permitting, which helps avoid delays. You also want to look for a remodeler familiar with East Tennessee’s terrain and climate, which can impact foundation and roofing decisions.

The best local builders often have reliable trade connections and is easier to reach for updates or follow-ups. Choosing someone with experience in the Knoxville area adds peace of mind and helps your project run smoothly. We even have a list of questions you should ask your contractor before beginning.

Working With Debuty Builders, Inc.

When you work with Debuty Builders, Inc., you’re getting a remodeler and a partner. We specialize in residential home remodeling and custom homes. As an experienced remodeling contractor serving Knoxville and the surrounding areas, we bring craftsmanship to every project. Our process takes care of you every step of the way, and our portfolio shows you the high quality of work that we do. We love serving both long-term residents and those new to the area by buying and remodeling beautiful spaces you can call home. When we give you the price for your specific addition, we've factored in everything from materials to the size of your project and so much more. Working with us means you get a customized experience. 

Contact Us 

Contact us today to schedule a consultation or learn more about what your new addition may cost.