Accessory Dwelling Unit (ADU) Construction in New Bedford, MA — Costs $84,740 to $494,317
What does accessory dwelling unit (adu) construction cost in New Bedford? Average $211,850, ranging $84,740–$494,317. Labor runs $45.44/hr locally — 41% above the national average. Free breakdown with material + labor split.
New Bedford, MA Market
+41% vs nationalLabor Rate
$45.44/hr
Material Index
131
Avg Permit Cost
$2,104
Median Home Price
$444,214
New Bedford is a mid-sized city in Massachusetts with a healthy pool of local contractors. Homeowners generally have several options to compare for a accessory dwelling unit (adu) construction, which helps keep pricing competitive. At 41% above the national average, New Bedford is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in New Bedford is valued at $444,214, putting this project at about 47.7% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$84,740
National: $60,000
Mid-Range
$211,850
National: $150,000
High End
$494,317
National: $350,000
Per Sq Ft
$353
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for New Bedford
Adjusted for New Bedford's labor rate ($45.44/hr) and material costs (index 131).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in New Bedford
$211,850
Based on 200 sq ft at mid quality, adjusted for New Bedford market rates.
Local Cost Breakdown
At New Bedford's average rate of $45.44/hr (51% above national avg)
Material cost index 131 (31% above national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in New Bedford
| Metric | New Bedford | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $211,850 | $150,000 |
| Median Home Price | $444,214 | $350,000 |
| Project as % of Home Value | 47.7% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $111,078 | $75,000 |
What Affects the Price in New Bedford
- 1Local labor rates ($45.44/hr in New Bedford)
- 2Material cost index (131 vs national 100)
- 3Attached vs detached
- 4Size and bedroom count
- 5Kitchen and bath quality
- 6Local ADU regulations
Popular Upgrades
- Full kitchen
- Separate entrance
- Solar panels for energy independence
Other Projects in New Bedford, MA
Second Story Addition
$282,467
Room Addition
$127,110
Swimming Pool Installation
$90,471
Garage Addition
$77,678
Home Addition
$112,168
Inground Swimming Pool
$89,806
Attic Conversion
$78,241
Swimming Pool Construction
$71,128
Accessory Dwelling Unit (ADU) Construction in Other Massachusetts Cities
Planning a Accessory Dwelling Unit (ADU) Construction in New Bedford
Building permits are typically required for a accessory dwelling unit (adu) construction in New Bedford. The average permit fee in this area is $2,104, 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 New Bedford, skilled contractors charge an average of $45.44/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $111,078, many New Bedford residents can budget for this project through savings. The mid-range cost of $211,850 represents 191% of the typical household's annual income.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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