My wife and I jointly own several BTL properties, but one is owned solely in her name in order to maximise tax relief by using her basic rate unearned income tax allowance.

We are proposing to sell one of our properties and my question is regarding changing ownership of the property which is in her name, into joint ownership, to take advantage of the two capital gains allowances. If we were to do this, would both our CGT allowances be usable against the capital gain which has arisen since the property was bought some fifteen or more years ago? 

Thanks

Malcolm