Accessory dwelling unit companies

Looking for accessory dwelling unit companies in Knoxville, TN? Call AccessoryDwellingUnit Experts 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 major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

These companies provide end-to-end management for property owners looking to add a secondary unit. They typically offer a mix of design, permitting, and construction management services to streamline the project. You need to hire a company when you want a structured, professional approach to the entire build process rather than managing individual subcontractors yourself. They help ensure your unit is built to code, on time, and aligned with your budget goals.

Frequently asked in Knoxville

What are the disadvantages of ADUs in Knoxville?

In Knoxville, some potential disadvantages of ADUs include the upfront cost of construction and navigating local zoning laws, which can vary. You might also consider how an ADU affects your property taxes or utility bills. However, these are often outweighed by the benefits of increased property value and rental income potential.

How much does an ADU cost in Tennessee?

What are the rules for ADUs in Tennessee?

Tennessee's rules for ADUs can differ by municipality, so Knoxville has its own specific requirements regarding setbacks, lot coverage, and parking. It's important to consult local ordinances to ensure compliance. These regulations are designed to integrate ADUs harmoniously into existing neighborhoods.

Is an ADU allowed in Knoxville?

What is the process for building an ADU in Knoxville?

Can I build a detached ADU in Knoxville?

Detached ADUs are often permitted in Knoxville, but specific regulations apply regarding their placement on the lot, size, and relationship to the main dwelling. These rules ensure they fit within the neighborhood's character. A call can provide details on what's feasible for your property.

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, Bearden, West Hills, Downtown Knoxville, South Knoxville — and every surrounding area.