Built for St. Louis Weather, Soil, and Permits
Deck Builders of St. Louis
Built for Drainage, Wind, and Freeze-Thaw Cycles
Designed to Withstand the Midwest
St. Louis decks must handle extreme humidity, heavy rains, snow loads, and uneven terrain. We build for durability and drainage, using solid framing and weather-tested materials. From city inspections to soil issues, we’ve got the local know-how to get it done right.
How Can We Help?
We Design for Traffic, Storage, Shade & Flow
Outdoor Living That Fits Your Life
A deck isn’t just an add-on—it’s an extension of your living space. We plan for how you move through your yard, how you cook and relax, and where you need privacy or protection. Our decks are functional, code-ready, and built to make your outdoor space easier to enjoy.
Fully permitted St. Louis deck designs
Composite and cedar options available
HOA- and code-compliant builds
Permits, Setbacks, and Inspections—All Covered
We Build to Pass the First Time
St. Louis city and county each have unique codes. We manage the entire process—permits, plans, and inspections—so there are no delays or surprises. From Soulard to South County, our decks meet every rule. We’re licensed, insured, and ready to build with full compliance.
Strong Foundations, Smart Drainage, Solid Joists
Framing That Stands Up to St. Louis Weather
Our framing is engineered for steep yards, clay soil, and heavy rainfall. We use pressure-treated posts, rust-resistant hardware, and layouts designed for airflow and strength. From bungalows in the city to hillside builds in the suburbs—we build it to last.
Composite or Wood—We’ll Help You Choose
Materials That Match Your Home and Maintenance Goals
We offer low-maintenance composite options like Trex and TimberTech, as well as classic cedar and pressure-treated pine. We’ll walk you through pros and cons—durability, color, cost—and help you select the perfect material for your style and weather conditions.
What Makes This Area Special
Soulard: Tight spaces and historic homes in Soulard demand precision builds. We match style and scale while maximizing space and passing inspection.
Central West End: These upscale properties call for refined finishes—composite decks, custom railings, and integrated shade features with premium materials.
South County: Sloped yards and mixed soil types are common in South County. We build deep foundations and stable decks that resist weather and shifting ground.
Don't worry, we can help!
About Alliance Deck Builders of St. Louis
From rooftop decks in Central West End to backyard rebuilds in South County, we’ve helped homeowners across St. Louis create decks that last. We handle permitting, materials, and inspections—so you don’t have to. Our team knows how to navigate city setbacks, sloped terrain, and humid climate challenges. Whether you’re replacing a worn-out platform or designing a multi-tiered retreat, we’ll build it right—with code compliance, clear communication, and high-quality craftsmanship.
Flow, Function, and Finishes That Make Sense
Decks Built for the Way You Actually Use Them
We ask the right questions: How do you use the space? Where does the sun hit? Do you grill, host, or just relax? We design your deck with these answers in mind—resulting in a layout that works naturally with your routine and looks great year-round.
What to Know Before Building Your Deck
Questions We Get from St. Louis Homeowners
St. Louis homes come in all shapes and lot sizes, which means every deck project comes with questions—about materials, permits, and what's possible on your property. Here are answers to the ones we hear most often.
Do you get permits for city and county projects?
Yes. We handle permits, drawings, and inspections for both St. Louis City and County, ensuring full compliance and approvals.
Which material is best for St. Louis weather?
Composite offers long-term durability with low maintenance. Cedar is great too, but requires sealing every few years.
Can you replace my old deck without rebuilding the frame?
If the frame passes inspection, yes. We offer re-decking and structural reinforcement when full rebuilds aren’t needed.
Can you build a rooftop or multi-level deck?
Absolutely. We build elevated and rooftop decks with engineered support and city-approved designs.
We Install Composite Decks Across Missouri
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Decks, Porches, Staircases & Add-On Structures
Full-Service Outdoor Construction
You Can Trust
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 Installation
Durable, low-maintenance decking in brands like Trex and TimberTech. We install with expert framing and clean finishes.
Wood Deck Building
Traditional wood decks built from cedar or pressure-treated lumber, sealed for longevity and built with care.
Deck Repair & Structural Reinforcement
We replace rotted joists, tighten loose rails, and restore sagging stairs—bringing your deck back to safe, usable shape.
Deck Restoration & Refinishing
We clean, sand, and seal old decks to restore natural color and extend the life of your outdoor space.
Multi-Level Deck Construction
Tiered decks add dimension and function. We build secure, attractive multi-level systems with unified stairs and rails.
Deck Extensions & Re-Decking
We extend existing decks or replace worn boards with modern composite or sealed wood—saving the foundation when possible.
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-In Porches & Sunrooms
Enjoy fresh air without the bugs. We build screened rooms and glass-walled sunrooms for relaxing in all weather.
Outdoor Kitchens & Grilling Stations
We build grilling areas, outdoor sinks, and kitchen setups into decks—complete with fire-safe materials and smart layout.
Pergolas, Gazebos & Arbors
Add architectural charm and functional shade with custom pergolas, gazebos, or arbors—built freestanding or integrated.
Pool Deck & Hot Tub Surrounds
Slip-resistant, water-safe decks designed to wrap hot tubs or pool edges with beauty and durability.
Detached Garages & Sheds
We construct code-compliant outbuildings including garages, workshops, and storage sheds with matching exterior finishes.
Custom Deck Railings & Stairs
We fabricate and install deck railings and stairs to match your design goals and meet local safety codes.
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.
Innovation
Fresh, creative solutions.
Integrity
Honesty and transparency.
Excellence
Top-notch services.
Build a Better Deck for Your St. Louis Property
Alliance Deck Builders of St. Louis offers complete design, permitting, and construction for outdoor spaces that last. We build to local codes, weather conditions, and your day-to-day lifestyle. Whether it’s a city rebuild or a fresh new layout, we’re ready when you are.
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