Deck Replacement
Stop Losing Summers To A Deck That Lets You Down
Your deck should be the best spot in the house — not an eyesore you apologize for. Mosby designs and builds decks that are safe, beautiful, and built to last, so you can get back to the summers you’ve been missing.
Is It Time For A New Deck?
Safety — A deck past its lifespan is a liability. Rotting wood, loose railings, and failing connections aren't just eyesores — they're hazards. If your deck is more than 15 years old, it's worth a professional look.
More Space For Your Family — A new deck adds functional outdoor living space when you need it most. Whether it's summer cookouts, kids playing, or a quiet evening outside, a well-designed deck makes your backyard work harder for you.
Home Value — A worn, weathered deck drags down your home's appeal and resale potential. A new deck is a smart investment — one that can return up to 75% of its cost and make your home more attractive to future buyers.
Entertain the Way You Want — A failing deck limits how you use your backyard. A new one opens it back up — for summer gatherings, weekend cookouts, and the kind of outdoor living you've been putting off.
What Does a New Deck Cost?
Every deck starts in a different place, so there’s no single answer. Think of it this way: a simple, single-level deck is your baseline — and the following factors are what move the number up from there.
Size and levels — A larger footprint or multi-level design adds material and labor
Stairs — Number of stair runs and complexity affect both cost and safety requirements
Decking material — Pressure-treated wood is the most affordable entry point; composite offers longer life and lower maintenance at a higher upfront cost
Railing type — Basic wood is economical; aluminum, cable, or glass adds visual impact at a premium
Lighting — From simple post-cap lights to full integrated systems
Yard conditions — Slope, soil, and site access can affect foundation requirements and labor
All Mosby deck projects are permitted and code-compliant — factored into every estimate. The best next step is a conversation with a Mosby consultant who can assess your space and give you a clear number.
Why Choose Mosby?
Design + Build, One Team
Design, materials, construction — all under one roof. No juggling contractors, no gaps, just one team from start to finish.
Materials Built To Last
Quality materials built for St. Louis summers and winters — so your deck looks great for years.
No Surprises
Clear pricing. Clear timeline. A team that keeps you informed from the first conversation to the final walkthrough.
Deck & Outdoor Living Blogs
7 Signs of a Dangerous Deck
How Decks Increase Your Useable Space
5 Easy Ways To Improve Your Existing Deck
Before & After: A St. Louis Deck and Screen Porch
Reviews
“The guys worked hard to make sure there was as little disruption as possible. We were amazed at how when the job was finished everything was spotless. We never even found a nail. We highly recommend Mosby Building Arts for any home remodeling or repair.”