Cost to Build a Deck in Wisconsin (2026)
A 12×16 ft deck in Wisconsin runs about $4,628 in pressure-treated pine and $9,679 in composite, installed — 2% above the US average. Here is what moves that number in Wisconsin, with a calculator priced for the state.
Pressure-treated pine
$20–$26 /sq ft
Cedar
$29–$38 /sq ft
Composite
$43–$56 /sq ft
Deck cost calculator for Wisconsin
Priced with Wisconsin labour, material and footing-depth factors. Change any input and the estimate updates.
Estimated installed cost
$8,518 – $11,131
192 sq ft · about $50.41/sq ft
- Materials
- $5,822
- Labour
- $3,857
- Footings (54 in deep)
- 3 × about $263
- Frost-depth adjustment
- +$288
Mid-range estimate for a rectangular deck attached to the house, with one beam line per 12 ft of depth and footings every 8 ft. Excludes demolition, permits and site work. For railing, stairs and a full line-item breakdown use the main deck cost calculator.
Wisconsin deck cost by size and material
Mid-range installed prices for a standard-height deck attached to the house, including framing, footings at the local depth and hardware. Railing and stairs are priced separately in the main deck cost calculator.
| Deck size | Pressure-treated pine | Cedar | Composite |
|---|---|---|---|
| 10 × 10 ft (100 sq ft) | $2,549 | $3,560 | $5,179 |
| 12 × 12 ft (144 sq ft) | $3,543 | $5,000 | $7,331 |
| 12 × 16 ft (192 sq ft) | $4,628 | $6,570 | $9,679 |
| 16 × 20 ft (320 sq ft) | $8,002 | $11,238 | $16,420 |
| 20 × 20 ft (400 sq ft) | $9,810 | $13,856 | $20,333 |
What drives deck prices in Wisconsin
Labour
Labour is the biggest regional variable. Carpentry labour in Wisconsin runs 5% above the national level, so a composite 12×16 that averages $9,216 nationally comes to about $9,679 here. On pressure-treated decks labour is more than half the bill, so the regional gap is widest on the cheapest material.
Climate
Cold, snowy winters with deep frost and humid summers.
Footings and frost depth
Footings in Wisconsin typically go 48–60 inches deep. At 54 inches each 12 inch footing costs roughly $263 installed, and a 12×16 deck needs about 3 of them — a premium of $288 against the 24 inch depth national prices assume.
Which decking makes sense here
Our pick for most Wisconsin homes: pressure-treated pine. Pressure-treated remains the value option; deep footings add cost regardless of decking. Composite adds about $5,051 to a 12×16 deck over pressure-treated — see the full 20-year comparison in the composite vs wood calculator.
Permits and code in Wisconsin
The Uniform Dwelling Code applies statewide; footings typically go 48 inches or more.
Typical deck permit fees: $75–$400. Expect a footing inspection before concrete, a framing inspection before the decking goes down and a final. Estimate your fee with the deck permit cost calculator, and read our deck permit guide for what the drawings need to show.
Best time to build a deck in Wisconsin
May to October.
Compare neighbouring states
Frequently asked questions
How much does it cost to build a deck in Wisconsin?
A typical 12×16 ft (192 sq ft) deck in Wisconsin costs about $4,628 installed in pressure-treated pine, $6,570 in cedar and $9,679 in composite. That is $20–$26 per square foot for pressure-treated and $43–$56 for composite — 2% above the US average.
Is a composite deck worth it in Wisconsin?
On a 12×16 deck composite costs about $5,051 more than pressure-treated up front. Pressure-treated remains the value option; deep footings add cost regardless of decking. Composite needs no staining, which saves a refinishing cycle every two to three years on wood.
Do I need a permit to build a deck in Wisconsin?
The Uniform Dwelling Code applies statewide; footings typically go 48 inches or more. Where a permit is required, fees typically run $75–$400. Under the model residential code, a freestanding deck under 200 sq ft and no more than 30 inches above grade that does not serve an exit door is often exempt — attaching it to the house removes that exemption.
How deep do deck footings need to be in Wisconsin?
Typically 48 to 60 inches depending on the part of the state. At about 54 inches, each 12 inch footing costs roughly $263 installed, compared with $167 at a 24 inch depth. Confirm the exact depth with your building department before digging.
When is the best time to build a deck in Wisconsin?
May to October. Booking a builder outside the spring rush often gets a faster start date and a keener price.
Is Wisconsin expensive for deck building compared with other states?
Wisconsin ranks 31 of 50 from cheapest to most expensive on our index. Carpentry labour runs 5% above the national level and materials right in line with it, which puts a typical deck 2% above the US average.
Price the rest of the project
How these figures are made: national installed prices per square foot, split into materials and labour and adjusted by a Wisconsin labour index (reasoned from BLS state carpenter wage data), a material and freight index, and the local footing depth. They are planning estimates — get two or three itemised local quotes. Method.