I expect so I'm afraid. However, how would estate agents know if you were planning to sell the house - just tell them you changed your mind later! Be careful though, they may give it a higher valuation than it's really worth to try and convince you to sell it.
Don't forget that there might be other expenses too - you will have to make sure his name is taken off the land registry (not sure if you can do this yourself or will need a solicitor). Also, check that the mortgage company will allow his name to be removed and if they charge an admin fee for this.
I don't know a lot about this I'm afraid. Hopefully someone else on here know's more