Accessory Dwelling Unit (ADU) Construction in Lynn, MA — Costs $79,970 to $466,492
What does accessory dwelling unit (adu) construction cost in Lynn? Average $199,925, ranging $79,970–$466,492. Labor runs $44.27/hr locally — 33% above the national average. Free breakdown with material + labor split.
Lynn, MA Market
+33% vs nationalLabor Rate
$44.27/hr
Material Index
119
Avg Permit Cost
$1,592
Median Home Price
$435,000
In a smaller market like Lynn, Massachusetts, the pool of contractors specializing in accessory dwelling unit (adu) construction may be more limited. Getting 3+ quotes is especially important to ensure fair pricing. At 33% above the national average, Lynn is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Lynn is valued at $435,000, putting this project at about 46.0% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$79,970
National: $60,000
Mid-Range
$199,925
National: $150,000
High End
$466,492
National: $350,000
Per Sq Ft
$333
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Lynn
Adjusted for Lynn's labor rate ($44.27/hr) and material costs (index 119).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Lynn
$199,925
Based on 200 sq ft at mid quality, adjusted for Lynn market rates.
Local Cost Breakdown
At Lynn's average rate of $44.27/hr (48% above national avg)
Material cost index 119 (19% above national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Lynn
| Metric | Lynn | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $199,925 | $150,000 |
| Median Home Price | $435,000 | $350,000 |
| Project as % of Home Value | 46.0% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $55,000 | $75,000 |
What Affects the Price in Lynn
- 1Local labor rates ($44.27/hr in Lynn)
- 2Material cost index (119 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 Lynn, MA
Second Story Addition
$266,567
Room Addition
$119,955
Swimming Pool Installation
$84,777
Garage Addition
$73,306
Home Addition
$105,484
Inground Swimming Pool
$83,849
Attic Conversion
$74,091
Swimming Pool Construction
$67,356
Accessory Dwelling Unit (ADU) Construction in Other Massachusetts Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Lynn
Building permits are typically required for a accessory dwelling unit (adu) construction in Lynn. The average permit fee in this area is $1,592, 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 Lynn, skilled contractors charge an average of $44.27/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Lynn household earning $55,000/year, this project at $199,925 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
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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