

Kalispell’s climate is a mix of alpine cold, summer heat, and heavy snow loads — and your deck needs to be ready for all of it. We engineer for strength and longevity using treated framing, composite or sealed wood boards, and structural reinforcements that go beyond code. Whether you’re downtown or out in the county, your outdoor space deserves the same durability as the rest of your home.

How Can We Help?
We’ve built decks across the Flathead Valley, from lakeside lots to hillside homes. That means we understand local snow loads, permitting, and how to build around views and wind exposure. Our crew handles everything no subcontractors and we back every project with experience and clear timelines. It’s why so many Kalispell residents choose us to get it done right.
Designed for mountain climate & views
Built to meet Kalispell snow load codes
Trusted by homeowners across Flathead County

Every property in Kalispell has its own character from narrow city lots to wide open spaces near Lone Pine State Park. We tailor each deck to your home’s elevation, sightlines, and use case. Want a hot tub surround with privacy? A covered deck with lighting and fans? A grilling area with a view of Flathead Lake? We design it all with structural integrity and year-round Montana use in mind.

The freeze-thaw cycles, summer sun, and heavy snowfall of Kalispell require tough, proven materials. We use composites like Trex and TimberTech, as well as cedar and pressure-treated wood — all selected for performance and longevity. Our fasteners resist rust, our posts are reinforced, and every project includes local weather considerations built in from the start.
When you hire us, you get our crew not a rotating list of subs. We design your deck, pull permits, prep the site, build it out, and walk you through the finished product. Whether we’re pouring footings in the spring thaw or building a screened-in porch before snow hits, you can count on timely work, clean job sites, and structures that pass inspection the first time.


East Side: With older homes and historic character, East Side projects often involve porch restoration, re-decking, or additions that blend into classic architecture.

West Valley: Known for larger lots and rural properties, this area is ideal for expansive decks, pergolas, and hot tub surrounds that take in the mountain backdrop.

Creekside: A newer neighborhood where HOA-approved materials and efficient layouts are key — we design for privacy, flow, and long-term function.
Don't worry, we can help!
We’re deck builders who understand what Kalispell homes really need strength, style, and builds that hold up to our wild weather. Alliance Deck Builders of Kalispell brings years of framing, finish work, and weather-specific knowledge to every job. From lake-view patios to historic porch upgrades, we handle every phase with respect for your time, property, and expectations.
If your deck is splintering, soft underfoot, or just outdated, we can help. Our re-decking and restoration services give new life to solid structures, replacing worn boards with durable composite or fresh cedar. If the frame is beyond repair, we’ll rebuild it stronger and safer. We also specialize in porch restoration especially for older homes that need code upgrades without losing their character.
From materials to permitting, here are answers to the most common questions we get from clients throughout the Flathead Valley.
Yes. We handle all permitting and coordinate directly with the City of Kalispell or Flathead County as needed.
Absolutely as long as the frame is sound, we can replace boards and railings to refresh your space.
Composite offers the best long-term performance, but cedar is a great option for natural warmth with proper sealing.
Yes we build patio covers, screened-in porches, and sunrooms designed for snow and sun protection.

We design and build custom decks tailored to your home, lifestyle, and outdoor space—built for comfort, code, and long-term value.

Durable, low-maintenance decking in brands like Trex and TimberTech. We install with expert framing and clean finishes.

Traditional wood decks built from cedar or pressure-treated lumber, sealed for longevity and built with care.

We replace rotted joists, tighten loose rails, and restore sagging stairs—bringing your deck back to safe, usable shape.

We clean, sand, and seal old decks to restore natural color and extend the life of your outdoor space.

Tiered decks add dimension and function. We build secure, attractive multi-level systems with unified stairs and rails.

We extend existing decks or replace worn boards with modern composite or sealed wood—saving the foundation when possible.

From pergola-style shade to full patio roofs, we protect your deck space from rain, sun, and snow with stylish coverage.

Enjoy fresh air without the bugs. We build screened rooms and glass-walled sunrooms for relaxing in all weather.

We build grilling areas, outdoor sinks, and kitchen setups into decks—complete with fire-safe materials and smart layout.

Add architectural charm and functional shade with custom pergolas, gazebos, or arbors—built freestanding or integrated.

Slip-resistant, water-safe decks designed to wrap hot tubs or pool edges with beauty and durability.

We construct code-compliant outbuildings including garages, workshops, and storage sheds with matching exterior finishes.

We fabricate and install deck railings and stairs to match your design goals and meet local safety codes.

From rooftop lounges to restaurant patios, we build commercial-grade decks that handle heavy use and meet ADA compliance.

Innovation
Fresh, creative solutions.

Integrity
Honesty and transparency.

Excellence
Top-notch services.
Alliance Deck Builders of Kalispell is here to help you create the perfect outdoor space whether that’s a hillside retreat, a functional porch, or a multi-level deck for entertaining. We know the climate, the codes, and what it takes to build structures that last in the Flathead Valley. Reach out today for a free estimate and see how we can bring your vision to life with craftsmanship and care.
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