Designed for the Way You Live and the Space You Have

Custom Deck Design & Construction in Pennsylvania

From Blank Backyards to Fully Built Outdoor Living

One-of-a-Kind Decks, Made to Fit Your Home

At Alliance Deck Builders of Pennsylvania, no two decks are alike. We specialize in custom builds that match your lifestyle, your home's layout, and your property's unique features. Whether you want a wraparound deck, elevated lounge, or a compact build for rowhouse living, we design and build it from the ground up. Our process includes layout planning, permitting, framing, surfacing, and finishing touches—all handled by our licensed team. Every deck we build is code-compliant, climate-ready, and built to hold up through Pennsylvania’s seasons.

Why Go Custom Instead of Pre-Fab?

Tailored Designs That Maximize Space, Style, and Use

Pre-made deck kits don’t account for real-world challenges—like slopes, small lots, or unique house layouts. With a custom build, we adapt every post, board, and beam to your property. Whether you're working around tree roots or matching existing trim, we make sure your deck fits like it belongs there. We also help you choose materials, shapes, and add-ons that align with how you want to use the space—from relaxing solo to entertaining a crowd.

Custom shapes and layouts for any footprint

Designed around your home’s elevation and architecture

No wasted space, awkward steps, or tacked-on feel

Wraparound custom deck with multi-tier layout and wood railings in Lancaster

Built to Withstand Pennsylvania’s Weather

Durable Framing, Finishes, and Materials That Last

Rain, freeze-thaw cycles, and hot summers can destroy an average deck. That’s why we only use materials rated for Pennsylvania’s climate—pressure-treated framing, composite or sealed hardwood boards, and moisture barriers in all the right places. We also build for water runoff, snow load, and structural integrity in every season. Whether you’re in Philly or Erie, your deck will look great—and stay safe—for years to come.

Deck builder reviewing blueprints with homeowner on an active job site in York

Start With a Sketch. Finish With a Space You Love.

From Design Consultation to Final Walkthrough

We start every deck build with a one-on-one design session—either on-site or remote—where we map out your goals, layout options, and features. Then we draft a plan, prep your site, handle permits, and build it to spec. You get updates at every stage, and we don’t leave until you’ve walked the job and signed off on every detail.

Add Value, Function, and Livable Space

Decks Built for Entertaining, Relaxing, and Everyday Use

A great deck turns your yard into a livable extension of your home. Whether you want a grilling station, lounge area, or space for the kids to play, we’ll design your build around real use—not just square footage.

Our decks are made for long-term function, with options like privacy walls, built-in benches, lighting, and more. We don’t just build platforms—we build outdoor rooms that get used year-round.

Spacious custom-built backyard deck with sectional seating and privacy screen in Allentown

Why Homeowners Across Pennsylvania Choose Alliance

Truly Custom Deck Designs: Built from scratch to fit your space and style.

Engineered for Year-Round Use: Framing and finishes rated for regional weather.

Permit-Ready, Code-Compliant Builds: We handle all local zoning and inspections.

Flexible Layouts & Add-Ons: Seating, privacy walls, stairs, and lighting available.

Built to Match Your Home: Seamless transitions, siding matches, and smart tie-ins.

Don't worry, we can help!

What to Expect From Your Custom Deck Build

From first call to final walk-through, we make the process smooth and stress-free. We schedule a design consult, draft your layout, handle permits, prep your site, and build your deck to code. Throughout, we keep you informed and the job site clean. Expect responsive communication, fair pricing, and craftsmanship that holds up season after season.

Clear scope of work and pricing before we start

Weather-resistant builds that last for decades

Clean jobsite and thorough final walkthrough

Your Choice of Materials, Features, and Finishes

Composite, Cedar, Pressure-Treated, and More

Your deck should reflect your taste and maintenance preferences. We offer a full range of material options—composite for low upkeep, cedar for classic warmth, pressure-treated for value, or exotic hardwoods for something bold. We’ll help you weigh the pros and cons of each, then finish it with railing styles, post caps, lighting, and skirting that suit your design. No sales pressure—just smart, honest guidance from experienced pros.