I live on a long busy road where the street is made up of small terraces each with 5 houses. I’m right in the middle, mine and all the others have ground floor extensions to the rear. I’d like to know if I can put on a second floor to the rear as I’m told it’s cheaper than a loft extension. The end of terrace in several examples on the street seem to have put on second floor extensions but I’m concerned being in the middle would have right to light issues for my neighbours particularly as we are East facing. Thanks for any advice.