we used to live in a flat that also had storage heaters and hadn't had a gas supply for about 30 yrs, i seem to remember transco had to check the pipe but we could use it and i think this service was free. however other flats in the block did have still have a gas supply. Also it shouldn't matter that none of the other houses have had to get pipes fitted you pay your rent the same as the rest of them so if the housing associaion don't pay for it are you going to get a reduction?