Ok here we go...
Series 1 - Gallagher house consisted of Frank, Fiona, Debbie, Liam, Carl, Lip, Ian
Next door was empty, so next door but one lived kev and veronica until the end of the series, when steve bought the house next door.
Series 2 - Gallagher house consisted of Debbie, Carl, Liam, Lip and Ian (Frank moved out to shiela's sometime in series 1) and they knocked through to Steve and Fiona's next door, where Fiona, Carol and Marty lived. Then u had kev and veronica on the end again.
Series 3 - Gallagher house consisted of Debbie, Carl, Lip, Ian, Liam and next door Carol, Marty, Sue (fiona had left end of series2). and obviously, kev and veronica on the end
Series 4 - Gallagher house consists of Frank (back from sheila's, who has left him) and Monica, Debbie, Carl, Ian, Liam and next door Lip and Mandy and baby katie have moved in with Carol as the only tenant remaining after marty and sue have left. Kev and Veronica are no longer living on the end, so Mandy's family the maguires have moved in. Paddy, Mimi, Shane and Micky. I think theres another brother, but dont know his name. Norma lives in the dorm-mobile too.
There is no sorrow like the memory of love and the knowledge that it is gone forever; even in dreams , i never saw again his face, and though i longed for it, i came at last to see that it was just as well, lest i live all the rest of my life in dreams - Morgaine Le Fay