This thread demonstrates how to say "a little house" by adding a diminutive to the word "house", even though I think "houselet" is an obsolete word in English and "cottage" or "little house" are used instead. (Edit: thanks to Linguoboy!)
masculine | feminine | neuter | no gender
huis | huisie
Haus | Häuslein
house | houselet
huis | huisje
casa | casita
maison | maisonnette
casa | casetta
casa | casula
casa | casinha
casă | căsuță
teach | teachín
къща | къщичка
dům | domek
kuća | kućica
dom | domek
дом | домик
hiša | hišek
namas | namelis
māja | mājiņa
σπίτι | σπιτάκι
mal | malik
maja | majake
ev | evcik
domo | dometo