We jointly own the freehold of a house [in 2 flats] with our neighbour. He is intending to move [yippee as he is very offensive] and wants us to sign a deed of variation for the lease of his flat. This deed details previous changes like an extension, but also that the dark and dingy cellar is now a habitable room! Should be just sign to get rid of him asap, or should we be wary?
Thanks