My house is undervalued. I made the mistake of filling in their online form to tell them why I thought this and about recent new kitchen etc. Rather than revise the price up they've lowered it further. Every other house on the street has added 3+% onto the value of their houses over the past year wheras mine has mysteriously gone down by 3+%. These people are unprofessional and can't be trusted. I'd never believe any valuation they gave and I certainly wouldn't employ them in any capacity. My advice is to ignore their wrong valuations on your home because any attempt to right their mistakes will only result in this kind of petty game-playing.