Custom Decks That Fit Your Life — and Your Landscape

Custom Deck Design & Construction Services in Montana

Thoughtful Design Built for Montana Lifestyles

What to Expect from Our Custom Deck Design Process

Every deck starts with a conversation. We begin with an on-site consultation to understand your goals, budget, and property layout. Whether you want a cozy platform deck for morning coffee or a multi-tiered structure with built-in seating and lighting, our team maps out the possibilities. We consider factors like slope, sunlight, drainage, and local zoning codes to ensure every element is safe, functional, and beautiful. Using 3D design software, we preview your deck before any materials are ordered—so you know exactly what you're getting.

Everything Starts With a Smart Layout

What We Consider During Custom Deck Planning

From lot slope to sun exposure, we think through every detail that affects your deck’s performance and comfort. Our custom deck plans are drawn with use, code, and climate in mind not just style.

Property size, slope & access points

House connection & roof lines

Wind exposure, sun & shade patterns

Custom deck design plan laid out on project blueprint for Montana home

We Build What We Design With No Outsourcing

Deck Design Backed by Engineering Know-How

Montana weather brings extreme temperatures, snow loads, and shifting soils so your deck design needs more than good looks. Our team builds to IRC standards and local code for each county or city. We collaborate with structural engineers when needed to ensure joist spans, footings, and support beams meet or exceed load-bearing specs. If your site requires soil testing or HOA approvals, we handle it. The result: a beautiful deck that’s also structurally sound and built to last.

Cedar and composite decking samples in Montana sunlight

Material Choices That Fit Montana’s Climate

Composite or Wood? We Help You Decide

Choosing the right material is key to long-term performance. In Montana’s varied climate from snowy Bozeman to sunny Helena we recommend materials based on exposure, maintenance preference, and budget. Composite decking (like Trex or TimberTech) offers low-maintenance durability, while cedar and pressure-treated lumber provide a timeless look with a more natural finish. We walk you through the pros and cons of each, considering aesthetics, lifespan, and how the surface will feel underfoot in different seasons.

We Handle Every Step from Sketch to Final Screw

Design-Build Services That Keep You in Control

With Alliance Deck Builders of Montana, you’re never left guessing. We manage the entire process from design and permits to material sourcing and construction scheduling. You’ll receive updates at every stage and approve the final plan before we break ground. Our crew arrives on time, works cleanly, and finishes with a walkthrough to ensure every detail is right. Need upgrades later? Our team remains available for maintenance, add-ons, or repairs down the line.

Montana deck build team reviewing plans on site

Why Homeowners Across Montana Choose Us

Tailored Design Plans: Every deck is custom-designed to match your lifestyle, space, and goals.

Local Code Expertise: We build to Montana’s zoning and snow load standards no shortcuts.

Premium Materials: We source trusted decking brands built to endure harsh mountain weather.

Clear Communication: You’re never in the dark. We keep you informed from start to finish.

Proven Craftsmanship: Over 300 decks built across Montana with consistent five-star reviews.

Don't worry, we can help!

More Than Design We Deliver Peace of Mind

From your first consultation to final inspection, we treat every deck like it's our own. Our transparent process eliminates surprises, and we provide clear timelines so you know what’s happening when. Plus, we back all custom design projects with manufacturer warranties and workmanship guarantees. This is outdoor living you can count on—for years to come.

Licensed and insured across Montana

Full permitting and HOA coordination included

Workmanship warranty on every project

From Missoula to Billings, We Know Montana Decks

Local Knowledge Makes All the Difference

Montana homes face unique challenges snow loads in Kalispell, wind exposure in Havre, and shifting soils in Butte. Our design team works with regional nuances in mind, including HOA preferences in Whitefish and permitting timelines in Helena. Whether you’re building on flat ground or a sloped lot, we design decks that fit the terrain and thrive in our extreme climate. That means better drainage, safer footings, and decks that look right at home in the Big Sky landscape.