Affordable accessory dwelling unit

Looking for affordable accessory dwelling unit in Knoxville, TN? Call AccessoryDwellingUnit Pros 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 is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Affordability in backyard homes often comes down to choosing efficient designs and standardized floor plans. By selecting a model that fits your existing utility footprint and requires minimal site excavation, you can keep your budget manageable. Exact pricing confirmed free on the call.

Frequently asked in Knoxville

What are the disadvantages of ADUs in Knoxville?

Disadvantages can include upfront costs for design and construction, and potential impacts on your existing yard space. You'll also want to consider how an ADU might affect property taxes or utility bills. It's important to weigh these factors against the benefits before moving forward. We can discuss these points with you on a call.

How much does an ADU cost in Tennessee?

What are the rules for ADUs in Tennessee?

Tennessee has state-level guidelines, but local Knoxville ordinances often dictate specific requirements for ADUs. These rules typically cover things like minimum setbacks, maximum size, and parking. Understanding these local regulations is key to a smooth project. We can help you understand what applies to your situation.

Is an ADU allowed in Knoxville?

Yes, ADUs are generally allowed in Knoxville, but specific regulations apply. These rules are in place to ensure they integrate well with existing neighborhoods and meet safety standards. We can help you determine if your property meets the requirements. It's always best to confirm with the local planning department.

What is the process for building an ADU in Knoxville?

Can I add an affordable accessory dwelling unit in Knoxville?

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: Old City, Downtown Knoxville, West Knoxville, Bearden, South Knoxville — and every surrounding area.