How much does it cost to build an ADU in Nashville? The usual backyard unit (ADU) job filed with Nashville is $114,788, from 407 priced permits (September 2023 through September 2026); the middle half of firms file between $103,120 and $127,315. A filed value is what the contractor wrote on the permit, not a quote or the final bill.
The usual backyard unit (ADU) job filed with Nashville is $114,788, from 407 priced permits, September 2023 through September 2026. The middle half of firms usually file between $103,120 and $127,315. Half of jobs were filed for less, half for more. A filed value is what the contractor wrote on the permit, not a quote or the final bill.
Approximately, from each firm's own spread: every firm's range of filed values, weighted by its 137 priced permits across 28 firms, pooled into one. Half of Nashville backyard unit (ADU) permits were filed between $99,600 and $136,000.
| Percentile | Filed value | Reads as |
|---|---|---|
| 10th | $72,800 | 1 in 10 permits filed below |
| 25th | $99,600 | 1 in 4 filed below |
| 50th | $117,000 | the middle permit |
| 75th | $136,000 | 1 in 4 filed above |
| 90th | $155,000 | 1 in 10 filed above |
Firms split into thirds by the usual value of the homes they work on, with each third's usual filed value weighted by permits. Home values: Davidson County assessor values.
| Firms working on | Usual home value | Usual filed value | Firms | Permits |
|---|---|---|---|---|
| Lower third | under $840,000 | $126,498 | 9 | 37 |
| Middle third | $840,000–$1,129,000 | $103,120 | 9 | 43 |
| Upper third | $1,197,000 and up | $112,235 | 10 | 57 |
Top 10 by permits in the last 12 months. Usual is each firm's middle filed value; middle half is the range its middle half of jobs were filed in; both are shown for firms with 5 or more priced permits. Busy is not the same as careful: pick what you value to build a list.
| Firm | Permits | Last 12 mo | Usual | Middle half |
|---|---|---|---|---|
| Artisan Build Construct LLC | 9 | 5 | $127,155 | $116,165–$134,774 |
| Huffine First Service | 6 | 5 | $122,155 | $120,996–$125,358 |
| Cobalt Ventures LLC | 4 | 4 | — | — |
| Palmetto Construction LLC | 20 | 3 | $112,235 | $108,803–$132,166 |
| JCL Construction LLC | 4 | 3 | — | — |
| Graystone Properties LLC | 3 | 3 | — | — |
| Native Construction | 3 | 3 | — | — |
| Southern Edge Construction LLC | 8 | 2 | $117,328 | $100,718–$123,060 |
| WTW Construction Collc | 6 | 2 | $138,577 | $120,797–$150,000 |
| Potter Roger Construction | 5 | 2 | $133,023 | $105,543–$151,860 |
Line your quote up against the file. In Nashville, 1 in 10 backyard unit (ADU) filed values sit under $72,800, the middle half between $99,600 and $136,000, and 1 in 10 over $155,000.
Nashville files the fewest backyard unit (ADU) permits in December (59 against an average month of 100) and the most in June (139). If you can choose, ask for quotes in a quiet month. We have no prices by month, so this is about crews' schedules, not a discount. When each trade is busiest in Nashville →
Source: public Davidson County (Metro Nashville) permit records. The window is September 2023 through September 2026; a permit filed after that isn't here yet.
Usual is the middle permit: half were filed for less, half for more. Only permits with a filed value count; a value of $0 or none is left out.
The spread is approximate: we keep seven points of each firm's own range of filed values, not every permit, and pool them.
Nobody paid to be on this page and nobody can. How the records work in Nashville →
Backyard Unit (ADU) cost in other cities: Raleigh Denver San Diego Honolulu Palo Alto Bellingham San Francisco Anaheim Marin County (unincorporated) Sacramento County (unincorporated)
Other job costs in Nashville: Electrical · HVAC / Gas · Plumbing · New Home · Demolition · Swimming Pool · Deck · Garage · Shed / Storage