elcome to CornerStone United!
CornerStone is one of the oldest and most experienced warranty and service contract providers in the U.S. and Canada. Since 1973 we’ve been dedicated to providing outstanding products and services to our manufacturer, agent and dealer partners.

All of our protection programs are designed to enhance our partners’ businesses. Whether it is boosting the marketability of a product through additional warranty coverage or generating additional income by through the sale of highly competitive protection products, we enable our partners to enrich their core business models.


See how CornerStone productions can benefit your business:

  • Automobile
  • Recreational Vehicle
  • Manufactured Housing
  • Powersports
  • Marine
  • HVAC