Accessory Dwelling Unit (ADU) Construction in Murfreesboro, TN — Costs $58,330 to $340,258

Hiring a Accessory Dwelling Unit (ADU) Construction Contractor in Murfreesboro, TN

When comparing accessory dwelling unit (adu) construction contractors in Murfreesboro, ask each company to quote the same scope, material grade, permit responsibility, cleanup, warranty, and timeline. That keeps the $58,330 to $340,258 local range useful instead of comparing unrelated bids.

Accessory Dwelling Unit (ADU) Construction Cost Calculator for Murfreesboro

Adjusted for Murfreesboro's labor rate ($29.53/hr) and material costs (index 96).

Local Cost Breakdown

Accessory Dwelling Unit (ADU) Construction vs. Home Value in Murfreesboro

Planning a Accessory Dwelling Unit (ADU) Construction in Murfreesboro

Building permits are typically required for a accessory dwelling unit (adu) construction in Murfreesboro. The average permit fee in this area is $1,021, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-18 months from start to finish.

A accessory dwelling unit (adu) construction is a complex project best left to licensed professionals. In Murfreesboro, skilled contractors charge an average of $29.53/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.

In Murfreesboro, where the median household income is $40,813, a $145,825 project requires careful budgeting. Look into home improvement loans, HELOC options, or local grants that may be available in Tennessee.

Financing the project? Compare current rates with Murfreesboro mortgage and HELOC rates to estimate monthly payments. For tax implications, mortgage interest deduction may apply — see SALT deduction guide.

Methodology & Local Data Sources

How we estimate accessory dwelling unit (adu) construction costs in Murfreesboro: Our local cost figure of $145,825 for Murfreesboro, TN is calculated by adjusting the national mid-range baseline of $150,000 using two location-specific factors:

1. Labor adjustment — 50%% of the project cost is labor. We multiply this by Murfreesboro's wage index, derived from BLS Occupational Employment and Wage Statistics for construction workers (SOC 47-0000). Murfreesboro skilled-trade labor averages $29.53/hr, compared to the national construction worker median.
2. Materials adjustment — 50%% of cost is materials. Murfreesboro's material cost index is 96 (national baseline = 100), based on regional shipping, lumber, concrete, and metal prices tracked by the Bureau of Labor Statistics Producer Price Index for Construction Materials.
3. Permit fees add $1,021 on average in Murfreesboro. Permit costs vary by project scope, square footage (200 sqft typical), and inspection requirements set by the local building department.
4. Cost-per-square-foot for this project in Murfreesboro: approximately $729/sqft, useful for comparing bids from contractors.

Authoritative data sources (US gov):

• BLS — Construction and Extraction Occupations Wages — labor rate baseline for Tennessee
• BLS Producer Price Index — Construction Materials — monthly materials cost tracking
• U.S. Census Bureau — Murfreesboro QuickFacts — household income, demographics, housing
• DOE Building Energy Codes Program — energy efficiency requirements affecting accessory dwelling unit (adu) construction permits
• International Code Council (ICC) — IBC, IRC, and IECC code references most Tennessee jurisdictions adopt
• EPA RRP Rule — Renovation, Repair, and Painting compliance for pre-1978 homes

Disclaimer: Cost estimates are based on regional averages and modeling — actual quotes from licensed contractors in Murfreesboro may vary ±15% based on project complexity, contractor backlog, and material availability. Always obtain at least 3 written bids before committing.

Reviewed by Brazora Monk · Last updated 2026

Find a Licensed Contractor + Permits in Murfreesboro

For a accessory dwelling unit (adu) construction in Murfreesboro, Tennessee, verify whether the contractor or specialty trade must be licensed, registered, insured, or permitted locally. Use official lookup tools and the local building department instead of trusting general directory sites:

Why this matters: Hiring an unqualified or uninsured contractor in Tennessee can create insurance, inspection, warranty, and code-compliance problems. Always verify license or registration requirements, insurance, permit responsibility and inspection closeout before signing contracts.