Custom 4 Season Rooms

4 Season Rooms in O'Fallon

Do you want to be able to enjoy your outdoor living space any time of the year? Custom Design Fence & Deck has the answer for you!

Custom Design Fence & Deck specializes in building custom 4 season rooms that match the style and architecture of your home avoiding the typical look of factory built rooms. Each 4 season room that we build is designed to be an additional climate controlled living space that you can enjoy any time of the year. Add options like skylights, a fireplace or a TV to enhance the enjoyment of your new 4 season room.

Proudly Serving:

St. Charles County, St. Louis County, Lincoln County, Warren County, O’Fallon, St. Peters, Wentzville, Chesterfield, Lake St. Louis and the entire St. Louis area. 

  • Westbury
  • Ultra Max
  • Timbertech
  • CHR
  • Azek
  • SimTek
  • Guardian
  • PolyRail Systems
  • Polyvinyl
  • Ultra Fencing & Railing
Our Work Speaks for Itself Check Out Our Photo Gallery

Customer Reviews

  • “Their bid was the most reasonable of the five. Ask for Gerry, Residential Sales, and you won't go wrong with this salesperson.”

    Happy Customer

  • “I would definitely use again and would not hesitate to recommend to anyone.”

    Happy Customer

  • “The foreman showed me how they reinforce their decks to last a lifetime. Don't bother with other companies. This company is truly the best.”

    Happy Customer

  • “Absolutely LOVE our new fence!!”

    Denny & Robin Canoy

  • “went to work one day and when I came home the fence was done and everything was cleaned up. I couldn't be happier.”

    Kathy and David C.