Our dog has had a kennel for a while but never uses it, we were having the same problem, we would look outside and she'd be on the doormat shivering her little tail off..
2 weeks ago we thought that it was time we through the kennel out as she never uses it, so we put it at the front door to get rid of the next day, she went straight in it, curled up like a cat and fell asleep. She is way too big for it, but she can see the door when she is in it now and she has been using it all the time.
But that doesnt help as yours is brick. Have you tried building another one closer to the door?