unusual peeing inside

Question
my 6 yr old has always been house trained and has in the last two weeks started peeing inside in the bedrooms 7 times in the last two weeks and only minutes after being let in please help

Answer
It is highly unusual for such a behavior change at that age for no reason.  I would start with a vet check, could be a UTI.  

Are there any changes in the household, people leaving or coming, new pets, a pregnancy, anything that would change his status or the amount of attention he is getting?  

If all else fails, when you are around you need to keep a close eye on the dog. Use closed doors or gates to keep it in the same room as you are, and perhaps as I do, a short chain fastened to the computer desk. If you catch it in the act, give it a sharp ''Ah, ah, ah!'' and take it out. When you can't watch it, crate it.

Leave it some toys. Perhaps a Kong filled with peanut butter. Don't leave anything in the crate the dog might chew up. It will do fine without even any bedding. You will come home to a safe dog and a house you can enjoy.

A dog that has not been crated since it was little, may take some work. Start out just putting its toys and treats in the crate. Praise it for going in. Feed it in the crate. This is also an easy way to maintain order at feeding time for more than one dog.