

A deck extension can add new life to your backyard—especially if your lifestyle has outgrown your layout. Whether you need space for a grill, hot tub, seating area, or staircase, our team designs and builds extensions that blend seamlessly with your current structure. We match materials, frame to code, and ensure proper footings so the new section is just as secure as the old.
If your framing is solid but the boards are warped, cracked, or weathered, re-decking is a smart fix. We remove old surfaces, inspect the structure beneath, and install new boards—wood or composite—depending on your goals. You’ll get the look and feel of a brand-new deck at a fraction of the price of a full rebuild.
Replace surfaces, not structure
Optional upgrades to stairs and railings
Keep your layout—refresh your finish

Your deck should fit your routine—not the other way around. Need room for a second seating area? A pathway to the pool? More space to cook and entertain? We design custom extensions that match your needs and your home’s architecture. From angled additions and corner wraps to multi-level connections, every project is crafted for comfort, style, and flow.

Re-decking gives you a chance to upgrade from wood to composite—or swap out tired boards for a new stain or finish. We work with top brands like Trex, TimberTech, and cedar mills to source long-lasting, attractive decking materials. Our team will verify that your current structure can support new materials, then make any reinforcements needed for safety and longevity.
Not sure what’s possible with your existing deck? That’s where we come in. We start with a detailed inspection, taking note of framing, footings, and fasteners. Then we build a plan—whether it’s a clean re-deck, a seamless extension, or both. You’ll get clear pricing, smart recommendations, and expert crews who treat your home like their own.

Framing Inspection First: We check and confirm your deck's base is solid and safe.
Material Matching & Upgrades: Seamless transitions with new boards or blended surfaces.
Custom Add-On Designs: Built-in seating, planters, stairs, and more.
Local Code Compliance: We handle permits and ensure extensions meet safety standards.
Budget-Smart Options: Save thousands by rebuilding only what’s needed.
Don't worry, we can help!
We believe deck improvements shouldn’t be stressful. From your first call, we focus on what’s possible—and practical—for your space. After an on-site review, we’ll show you material samples, layout options, and clear pricing. Whether you’re adding space, upgrading boards, or both, you’ll get a detailed timeline and open communication throughout.
Free consultations with layout and material options
Timely builds—most done in 2–4 days
Cleanup, haul-away, and final inspection included
We handle projects big and small—from fresh surfaces on rental decks to expanded restaurant patios and upgraded multi-family units. Need to modernize an aging entry deck or add ADA access? We’ve done it. Our team works efficiently, with safety and long-term value at the forefront. One smart extension or re-deck can completely transform how your space feels and functions.
Here are some of the most common questions we get when clients want to re-deck or extend an existing platform.
Yes. As long as the existing framing is structurally sound, we can add space and blend it with new materials.
Often, yes. If your framing is in good shape, you can save thousands by just replacing the surface.
We do our best to match or blend materials, or we can re-surface the entire platform for a unified look.
Absolutely. We often upgrade railings, stairs, and lighting during the process for a full refresh.











Tailored deck layouts built to match your space, needs, and style preferences—designed from scratch for lasting curb appeal.

Durable, low-maintenance composite decks from top brands like Trex, Fiberon, and TimberTech.

Natural cedar and pressure-treated lumber decks built for character and strength.

We fix sagging frames, rotted boards, or loose railings to restore safety and support.

Bring old decks back to life with sanding, staining, sealing, and hardware replacement.

Built on sloped lots or elevated spaces, our tiered decks expand access and views.

Add square footage or resurface aging planks with new composite or wood decking.

Custom-built covers, patio roofs, and gable-style protection from sun and rain.

Fully enclosed porch systems to keep bugs out and fresh air in—ideal for Wisconsin summers.

Custom-built BBQ counters, granite tops, and gas lines for entertaining in style.

Freestanding or attached shade structures crafted in cedar or composite.

Moisture-resistant decks built to wrap pools, spas, and backyard features.

Deck-attached or freestanding sheds and garages built to match the home’s exterior.

Cable, metal, or wood rails and wide stair access customized for safety and style.

Rooftop bars, restaurant patios, and public decks built to code with commercial-grade materials.

Innovation
Fresh, creative solutions.

Integrity
Honesty and transparency.

Excellence
Top-notch services.
Whether you’re dreaming of a multi-level lake deck, a backyard grilling station, or a cozy screened porch, our team is ready to bring your vision to life. Alliance Deck Builders of Wisconsin delivers detailed planning, clear communication, and lasting craftsmanship—backed by warranties you can count on. Contact us today to schedule your no-obligation consultation and see how easy it is to start building your ideal outdoor space.

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