More Space, Better Boards, Same Trusted Frame

Deck Extensions & Re-Decking

Keep the Structure, Upgrade the Surface

Save Money by Building on What’s Still Strong

You don’t always need to start from scratch. If your deck frame is solid, we can re-deck the surface or extend the layout—saving money while giving you more space, new boards, and a cleaner finish. We’ll inspect, confirm it’s safe, and build from there.

New Boards, Fresh Layout, Modern Feel

Extend or Upgrade Without Rebuilding the Whole Deck

We specialize in transforming tired decks by adding usable space or re-surfacing with composite or wood. Whether you want to widen the platform, replace the stairs, or go from cedar to Trex, our team handles it cleanly—with framing checks, proper fasteners, and a high-end finish.

Add square footage with code-compliant framing

  • Replace weathered boards with composite or cedar

Extend stairs, railings, or landing zones

Deck extension with new composite boards and expanded railing area

Extend for Function, Comfort, and Value

Add Space Where It Matters Most

Need more room for dining, lounging, or grilling? We can extend your current deck to fit your lifestyle. Whether you’re adding a few feet or a full second tier, our team matches the materials, layout, and structure so everything flows naturally and meets code.

Redecked cedar platform with fresh boards and modern horizontal railing

Re-Decking Saves Time and Cost

Replace Boards Without Touching the Frame

If the frame is solid, re-decking is the fastest way to upgrade. We remove the old boards and install new wood or composite decking—clean, fast, and built to last. It’s a great option if your current structure is safe but the surface has seen better days.

From Cedar to Composite

Upgrade Your Look and Lower Maintenance

We can upgrade your deck boards from wood to composite for a cleaner finish and longer lifespan. Choose from brands like Trex or TimberTech for materials that resist fading, warping, and splinters. You’ll get a sleek new look with less upkeep for years to come.

Composite re-decking installation over existing frame with low-maintenance finish

Why Choose an Extension or Re-Deck

  • Custom Design Options: We match your extension or re-deck to the existing layout and aesthetic.

  • Faster Project Timeline: Most projects finish in just a few days—no demo or rebuild needed.

  • Better Use of Space: Extensions give you room to dine, grill, or add a hot tub zone.

  • Modern Finish Choices: Replace aging boards with composite, cedar, or wide-format planks.

  • Framing Inspection Included: We evaluate your current structure to ensure it’s solid and safe.

Don't worry, we can help!

When It Makes Sense to Extend or Re-Deck

If your deck feels too small or looks worn but is structurally sound, you don’t need to rebuild—you just need a refresh. Our team helps homeowners maximize what they already have by extending square footage or upgrading surface boards.

  • Sturdy framing that still meets code

  • Surface boards that are cracked or faded

  • Homeowners needing more room without full rebuild

Expand, Refresh, and Enjoy It Again

Make the Most of What You’ve Already Built

We believe in smart upgrades—not unnecessary tear-downs. If your frame can handle more or your layout just needs tweaking, we’ll build the right extension or surface upgrade to improve how your deck looks and functions.

Questions About Expanding or Re-Decking

What to Know Before You Upgrade

Not sure if your deck can be extended or re-decked? Here are some of the most common questions we hear from homeowners considering a smart upgrade without a full rebuild.

Can you re-deck over any existing frame?

Only if it's structurally sound. We inspect every frame before recommending a re-deck or extension.

Do I need a permit for a deck extension?

Yes, if you’re expanding the footprint. We handle the drawings and permitting for you.

How long does a re-decking project take?

Most are completed in 2–4 days depending on size and material.

Can you extend a composite deck?

Absolutely. We match your existing composite or blend new styles for a seamless finish.

More Than Just Extensions and Re-Decks

Custom Builds, Covers, Kitchens & More

Custom deck design with stairs and railing in Missouri

Deck Design & Construction

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

Composite deck install with wide steps and fascia

Composite Deck Installation

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

Cedar deck with built-in seating and stairs

Wood Deck Building

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

Damaged deck being repaired with new joists

Deck Repair & Structural Reinforcement

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

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Weathered wood deck mid-restoration

Deck Restoration & Refinishing

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

Multi-tiered deck with stair access and rails

Multi-Level Deck Construction

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

Home deck extension in progress with composite boards

Deck Extensions & Re-Decking

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

Covered deck with gabled patio roof

Covered Decks & Patio Roofs

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

Screened porch addition with ceiling fan

Screened-In Porches & Sunrooms

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

Outdoor kitchen with grill and countertop on deck

Outdoor Kitchens & Grilling Stations

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

Backyard cedar pergola on wood platform

Pergolas, Gazebos & Arbors

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

Poolside deck with waterproof composite surface

Pool Deck & Hot Tub Surrounds

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

Detached garage with matching siding and roof

Detached Garages & Sheds

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

Custom metal railings and wide staircase on deck

Custom Deck Railings & Stairs

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

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Rooftop restaurant deck with dining area and railing

Commercial Deck Projects (Restaurants, Rooftops, etc.)

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

Icon of expanding deck frame for deck extension

Innovation

Fresh, creative solutions.

Icon of replacement board for re-decking services

Integrity

Honesty and transparency.

Icon of checklist for framing inspection and code compliance

Excellence

Top-notch services.

Let’s Build Something That Lasts

We’re more than just deck builders—we’re long-term partners in outdoor living. From concept to completion, Alliance Deck Builders of Missouri works with integrity, craftsmanship, and care. Ready to make the most of your outdoor space? Let’s talk.

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