Looking for accessory dwelling unit companies in Knoxville, TN? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Knoxville and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

ADU companies offer end-to-end solutions, often handling everything from the first sketch to the final walk-through. You need these companies if you prefer a streamlined experience where one firm takes responsibility for design, permitting, and construction. They are ideal for homeowners who want to minimize the stress of managing multiple vendors and prefer a turnkey approach to adding a secondary residence to their property.

Frequently asked in Knoxville

What are the disadvantages of ADUs in Knoxville?

Potential disadvantages include upfront construction costs and navigating local building regulations. You'll also need to consider how an ADU might impact your existing yard space or privacy. However, the long-term benefits like increased property value and rental income often outweigh these initial concerns for Knoxville homeowners.

How much does an ADU cost in Tennessee?

What are the rules for ADUs in Tennessee?

Tennessee has state-level guidelines, but specific rules and permitting processes are often managed at the city level, including in Knoxville. These can cover setbacks, lot coverage, and parking requirements. Consulting with a local expert is crucial for understanding exact regulations.

Is an ADU allowed in Knoxville?

What is the process for building an ADU in Knoxville?

Can I rent out my ADU in Knoxville?

Renting out an ADU is a common goal for Knoxville homeowners, and it's usually allowed if the unit complies with all city ordinances. This includes safety codes and occupancy regulations. Discussing your rental plans with the pros can ensure your ADU is built to meet these requirements.

Also serving nearby: Asheville · Chattanooga · Murfreesboro · Roswell · Sandy Springs

All cities in Tennessee →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

198,162residents

2,007per sq mile

8ZIP codes served

Serving all of Knoxville — population 198,162; about 2,007 residents per square mile across 98.7 sq mi. ZIP codes covered include 37901, 37902, 37909, 37912, 37914, 37915, 37916, 37917.

Neighborhoods served in Knoxville: Bearden, Downtown Knoxville, West Knoxville, North Knoxville, Old City — and every surrounding area.