Accessory Dwelling Unit (ADU) Construction in Green Bay, WI — Costs $60,940 to $355,483
What does accessory dwelling unit (adu) construction cost in Green Bay? Average $152,350, ranging $60,940–$355,483. Labor runs $31.54/hr locally — 2% above the national average. Free breakdown with material + labor split.
Green Bay, WI Market
+2% vs nationalLabor Rate
$31.54/hr
Material Index
98
Avg Permit Cost
$1,195
Median Home Price
$205,060
Green Bay is a mid-sized city in Wisconsin 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. Costs in Green Bay run slightly above the national average, though the gap is modest enough that smart material choices and timing can close it. At a median home price of $205,060, homeowners in Green Bay should weigh the project cost (74.3% of home value) carefully against expected returns to avoid over-improving for the local market.
Low Estimate
$60,940
National: $60,000
Mid-Range
$152,350
National: $150,000
High End
$355,483
National: $350,000
Per Sq Ft
$254
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Green Bay
Adjusted for Green Bay's labor rate ($31.54/hr) and material costs (index 98).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Green Bay
$152,350
Based on 200 sq ft at mid quality, adjusted for Green Bay market rates.
Local Cost Breakdown
At Green Bay's average rate of $31.54/hr (5% above national avg)
Material cost index 98 (2% below national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Green Bay
| Metric | Green Bay | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $152,350 | $150,000 |
| Median Home Price | $205,060 | $350,000 |
| Project as % of Home Value | 74.3% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $62,689 | $75,000 |
What Affects the Price in Green Bay
- 1Local labor rates ($31.54/hr in Green Bay)
- 2Material cost index (98 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 Green Bay, WI
Second Story Addition
$203,133
Room Addition
$91,410
Swimming Pool Installation
$65,555
Garage Addition
$55,862
Home Addition
$80,968
Inground Swimming Pool
$65,323
Attic Conversion
$56,058
Swimming Pool Construction
$50,962
Accessory Dwelling Unit (ADU) Construction in Other Wisconsin Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Green Bay
Building permits are typically required for a accessory dwelling unit (adu) construction in Green Bay. The average permit fee in this area is $1,195, 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 Green Bay, skilled contractors charge an average of $31.54/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Green Bay household earning $62,689/year, this project at $152,350 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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