How much does deck building cost in Great Falls, MT?

Most Great Falls homeowners spend between $4,350 – $11,900 on deck building, with an average around $7,900. Local labor prices 1% below the national average, so Great Falls quotes tend to land at the lower end of national ranges.

Why is deck building more or less expensive in Great Falls than elsewhere?

Licensed trade labor in Great Falls runs about 99% of the national average, and the best crews book out fastest in spring and early summer. Montana weather drives material choices here, so ask contractors what they install most often in Great Falls and why.

Do I need a permit for deck building in Great Falls, Montana?

Most Great Falls, MT projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Great Falls?

Get at least three written quotes from licensed, insured Montana contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Great Falls metro market.

How much does a deck cost per square foot?

$15 to $80 per square foot installed. Pressure-treated pine runs $15–$35, composite $30–$60 and tropical hardwood $40–$80.

Is composite decking worth it?

Composite costs roughly twice as much upfront but eliminates staining every two to three years, so it typically wins over a 15+ year hold.

Do I need a permit for a deck?

Almost always if the deck is attached to the house or more than 30 inches above grade. Permits run $150 to $800.

How long does deck construction take?

One to two weeks for a standard deck, plus permit review time before the crew starts.

Does a deck add value to my home?

A wood deck addition typically returns 50% to 65% of its cost at resale, and it is one of the most-requested outdoor features in listings.

What is the cheapest way to build a deck?

Keep it rectangular, ground level and under 200 square feet, frame and surface it in pressure-treated pine, and skip railing, stairs and picture framing.

Home/Cost guides/Deck Building/Great Falls, MT

Great Falls metro · Montana

Deck Building cost in Great Falls, MT

Great Falls homeowners typically pay $4,350 – $11,900 for deck building. Local labor and materials price 1% below the national average.

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Great Falls average

$7,900

Typical low

$4,350

Typical high

$11,900

Per square foot

$15 – $79

Sample ZIP

What drives Great Falls pricing

Local labor

Licensed trade labor in Great Falls runs about 99% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Great Falls, MT projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Montana weather drives material choices here, so ask contractors what they install most often in Great Falls and why.

Instant cost calculator

Adjust the inputs to see live pricing

Deck size350 square feet

Decking material

Height above grade

Railing

Shape

Estimated project cost

$5,250 – $12,250

Most homeowners pay around $8,750

Compare decking material

Cost by material in Great Falls

Installed Great Falls pricing per square foot.

Option	Installed cost	Pros	Cons
Pressure-treated pine	$15 – $35	Cheapest framing and surface option	Needs sealing every 2-3 years; can warp
Cedar	$25 – $45	Naturally rot resistant, ages well	Soft surface, annual maintenance
Redwood	$30 – $50	Rich color, stable	Limited supply outside the West
Composite (Trex, TimberTech)	$30 – $59	No staining, 25-year warranties	Gets hot in sun, higher upfront
PVC / cellular vinyl	$35 – $69	Fully waterproof, lightest maintenance	Most expensive mainstream option
Tropical hardwood (ipe, cumaru)	$40 – $79	Extremely durable, premium look	Hard to cut, needs oiling to keep color
Aluminum	$45 – $89	Will not rot, rust or burn	Industrial look, noisy underfoot

Where the money goes in Great Falls

A typical $7,900 Great Falls project, broken down by line item.

Decking & railing material45% · $3,555
Labor35% · $2,765
Framing, footings & hardware15% · $1,185
Permits & disposal5% · $395

Common add-ons

Extras that show up on Great Falls quotes but rarely in the headline price.

Stairs

Per step

$99 – $250

Built-in bench seating

$595 – $2,500

Pergola or shade structure

$2,500 – $8,900

Under-deck drainage

$1,500 – $4,950

Deck lighting

$395 – $2,500

Old deck demolition

Per square foot

$5 – $15

Permit

$150 – $790

Ways to save in Great Falls

Keep the deck rectangular and under 200 sq ft where codes ease off.
Frame with pressure-treated lumber and spend only on the visible deck surface.
Build ground level — every foot of elevation adds framing, footings and railing.
Schedule in fall when builders discount to keep crews busy.
Skip fascia wraps and picture framing details that add labor with no structural value.

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$17,820 – $94,050

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