Serving Missoula, the Bitterroot Valley and Western Montana Mon to Fri, 7am to 6pm  ·  (406) 207-2524
Built for Montana winters

Custom Deck Builders in Missoula, Montana

Composite and cedar decks framed to carry Missoula snow loads, with flashed ledgers, footings below frost and railings that pass inspection the first time. One crew handles design, permits and construction.

A deck in Missoula has a harder job than a deck in most places. It carries a winter of snow and then rides the freeze-thaw cycles that heave shallow footings out of the ground by spring. Constructive Brothers builds decks for that reality. We pour footings to 42 inches, which clears the city minimum with room to spare, and we size joists and beams for the local snow load rather than the generic span tables printed on a box-store handout. Ledgers get flashed and through-bolted to the rim joist, never lag-screwed into siding. The result is a deck that still feels solid after its tenth winter in the Rattlesnake or Target Range.

We build in whatever material suits the house and the budget. Trex and TimberTech composites cost more up front and never need staining, which matters when smoke season and early snow shorten the window for maintenance. Cedar costs less and looks right on the older homes in the University District and the Slant Streets, provided you accept a stain every two or three years. Either way the frame underneath is pressure-treated lumber with joist tape on every top edge, hidden fasteners where the decking allows, and 36-inch guardrails with balusters spaced under 4 inches. You get a fixed-scope quote before we dig, and the same crew stays on the job until the final inspection is signed.

Most Missoula decks run $12,000 to $45,000 depending on square footage, composite versus cedar decking, railing style and how many stairs or levels the grade requires.

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Why Us

Why Missoula Homeowners Choose Us for Custom Decks

Footings that stay put

Shallow piers heave in Missoula's freeze-thaw cycles and leave a deck racked and wobbly within a few winters. We dig every footing to 42 inches, bell the base where the soil is loose river gravel, and set galvanized post bases above grade so the posts never sit in water.

Framed for the snow load

A deck rated for 40 pounds per square foot is fine in Phoenix. Here we design the joists, beams and hardware for the heavier ground snow that piles up against the house all winter, and we tape the joist tops so meltwater does not rot the frame from above.

Ledger done right

Most deck failures start where the deck meets the house. We cut back the siding, install a proper ledger with Z-flashing and a peel-and-stick membrane behind it, then through-bolt to the rim joist with structural screws on the spacing the inspector expects. No lag screws into stucco or vinyl.

Material matched to the house

We will tell you honestly whether Trex, TimberTech or cedar makes sense for your budget and how much upkeep you are willing to do. A composite deck on a 1920s Northside bungalow can look wrong, and a cedar deck on a busy family's south-facing lot can become a chore.

Our Process

How a Custom Decks Project Runs

Site visit and layout

We walk the yard with you, check grade, sun exposure and where the door lands, then measure the house and note utilities. You leave with a sketch and a straight answer on material options.

Fixed-scope quote and permit

You get a written quote that lists decking, railing, footing count and stair details so nothing is vague. We draw the plan, submit it to the City of Missoula or the county, and schedule the footing inspection.

Footings, frame and decking

Footings go in first and get inspected before a single post is set. The frame follows, with joist tape and hardware installed as we go, and the decking goes down once the frame is square and level.

Railing, stairs and final inspection

Guardrails, balusters and stairs go on last, checked against the 36-inch height and 4-inch spacing rules. We call for the final inspection, haul off the scrap, and walk the finished deck with you.

Recent Work

Custom Decks We've Built

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FAQs

Custom Decks Questions, Answered

Do I need a permit for a deck in Missoula?
Almost always. Any deck attached to the house, more than 30 inches above grade, or over 200 square feet needs a building permit from the City of Missoula or Missoula County. We handle the drawings and the application as part of the job, and we schedule the footing and final inspections. Skipping the permit can create problems when you sell, so we do not build unpermitted decks.
Is composite decking worth the extra cost over cedar?
For most families, yes. Trex or TimberTech costs roughly 30 to 50 percent more in materials, but it never needs stain and it holds up to snow shoveling without splintering. Cedar is a good choice if you want a lower initial price and do not mind staining every couple of years. We build both and will price your deck both ways if you ask.
How long does it take to build a deck?
A typical 300 to 400 square foot deck takes one to two weeks on site once the permit is issued, and permit review in Missoula usually adds two to four weeks ahead of that. Our build season runs roughly April through October because footings need thawed ground, so decks quoted in late summer often land in a spring slot. Book early if you want it for the Fourth of July.
Can you repair or replace an existing deck instead of building new?
Yes, and we will tell you which one makes sense. If the frame is sound but the boards are gray and checked, a redeck with new composite on the old joists can save real money. If the ledger was never flashed or the posts sit in dirt, which is common on decks built in the 1980s and 1990s, replacing the structure is usually cheaper than chasing rot one board at a time.
Service Areas

Custom Decks Across Missoula and the Bitterroot

Based in Missoula. One crew and one standard of work from Frenchtown to Hamilton, up the Blackfoot and over to Seeley Lake.

Related Services

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Get a fixed price on your Missoula deck

Free on-site walkthrough. A fixed-scope quote in writing. Work that passes inspection the first time.

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