Average Deck Building Cost in Wisconsin
$8,951
Low End
$5,920
Average
$8,951
High End
$12,461
Want a more precise estimate?
Use our free Decking calculatorHere's how deck building costs typically break down in Wisconsin:
Deck Building in Wisconsin is 1% below the national average of $9,045. This makes Wisconsin one of the more affordable states for deck building.
Wisconsin experiences a humid continental climate with long, very cold winters and warm, humid summers, with lake-effect snow adding significant precipitation along Lake Michigan and Lake Superior. Frost lines of 48 inches or more, freeze-thaw cycles, and a compressed May-through-October exterior window drive foundation and scheduling decisions statewide. For deck building projects specifically, this means timing and material selection are key factors in both cost and quality.
Wisconsin's costs are close to the national average, reflecting a balanced supply-demand dynamic in the local construction market.
Wisconsin requires a Dwelling Contractor and Dwelling Contractor Qualifier credential through the Department of Safety and Professional Services (DSPS) for residential construction
Focus on Energy runs active 2026 rebates for heat pumps, insulation, and ENERGY STAR equipment, separate from the expired federal energy credits
Lake-effect snow loads along Lake Michigan and Lake Superior run significantly higher than in south-central Wisconsin, confirm design snow load with the building inspector
Milwaukee and Dane County (Madison) historic review can add months to exterior permits, and prevailing wage applies to publicly-funded adjacent work
Most deck building projects in Wisconsin require a building permit, especially if structural changes are involved. Estimated permit cost: $249.
View full permit guide for WisconsinShare your project once and we'll send it to up to 3 verified deck-building pros in your area. Free for you, free for them. Never shared with more than 3, and never with anyone we have not verified.
Deck Building in Wisconsin typically costs between $5,920 and $12,461, with an average of $8,951 for a typical project in 2026.
No, deck building in Wisconsin is about 1% below the national average, making it more affordable than many other states.
Permit requirements vary by city and county in Wisconsin. Most deck building projects that involve structural changes require a building permit. Check our permit guide for Wisconsin for specific requirements.
A typical deck building project takes 2-7 days depending on the scope, weather conditions, and contractor availability in your area.
Get at least 3 quotes from licensed contractors, consider scheduling during off-peak seasons (fall/winter), ask about financing options, and make sure to compare material options as they significantly affect the total cost.
Cost estimates are based on publicly available data and industry averages for Wisconsin. Actual costs vary significantly based on project specifics, contractor pricing, material choices, and local market conditions. These estimates are for informational purposes only. Always get multiple quotes from licensed contractors.