I was going to say one of the best episodes but there are about 11 of those =D
screencap
dollhouse
season 1
episode 7
echoes
image
1x07
107
echos
This Dollhouse screencap contains
triplex, brownstone, escola, and escola escola.
There might also be
casa de linha, casa da cidade, casa geminada, linha house, mansão, bay window, janela de arco, janela de proa, janela de sacada, bungalow, casa, and casa de campo.