About Twin-Co, Inc.
Twin-Co, Inc. is a locally owned remodeling company in Alton that has operated since 1981. It designs and remodels kitchens and bathrooms, installs windows and doors, does maintenance-free exterior work, and builds wood and composite decks and patios. For decks it offers free estimates and computer-aided design with floor plans and perspective views, so customers can see the new deck before deciding to order. The company guarantees its workmanship after nearly 40 years in the business and invites customers to ask for references. A no-obligation, no-pressure estimate request is available, and the kitchen and bath process is spelled out, including reinstalling the toilet each day so a bathroom is usable again in about three days. Rated 5.0 from 8 Google reviews.
What Twin-Co, Inc. offers
Builds new decks
YesWood decks
YesComposite decks
YesDesign and 3D plans
YesFree estimates
YesWorkmanship warranty
Yes
No information yet on pVC decks, railings, pergolas and covers, screened and three-season porches, deck repair, handles permits, says it is insured, financing. The website did not say; call and ask.
Contact
- (618) 466-8946
- Service area business, serves Alton, IL
- Website
- View on Google Maps
Hours
- Monday
- 8:30AM-5PM
- Tuesday
- 8:30AM-5PM
- Wednesday
- 8:30AM-5PM
- Thursday
- 8:30AM-5PM
- Friday
- 8:30AM-5PM
- Saturday
- Closed
- Sunday
- Closed
Listing compiled from public sources on October 17, 2026. Rating and review count from Google on that date. Report a correction or request removal. Back to deck builders in Alton.
