I ave been having real hassle as a house I am trying to buy has a room in the loft which the surveyor assumed was a conversion ansd as he didn't see any planning or building regs he discounted it from the valuation.Now that the search is back there is no planning on there either BUT the deeds clearly count this as a proper room and I am wondering if it might always have been there from when the house was built.It was def there when the current owner bought it and his building society and solicitors took it as a bedroom and never disputed it.It is a victorian terrace quite old and does look like it has always been there as it is full of period features and doesn't look like a normal conversion.What I really am asking is are the deeds the definitive in the house?