 He purchased hundreds of acres of farms in what is now North Philadelphia and built whole neighborhoods of middle-class housing, serviced by streetcar lines.His architect for these was Willis G. Hale, the husband of one of his nieces.Having outlived his two physician sons, Farr and William, Weightman came to rely on his daughter, Anne Weightman Walker, in 1903, after her husband died and when she was admitted as a partner.