All of our raised beds come with a 10 year structural warranty - it could easily be a life time warranty because thats how long they usually last. Whether for indoor or outdoor use you can rely on a ComfyPet Bed. You may pay a little more but you shouldn't need to replace it - ever [except for the odd cover due to wear & tear] A fitted padded mattress as an accessory can also extend the life of the polyester covers attached to the beds.