I wonder whether all the Hungarian place names with -háza (f. i. Nyíregyháza) are derived from Germanic Hus/Haus (English: house). As for the usage you have loads of -hausen place names in Germany (f. i. Nordhausen).
Long beofre the advent of the (initial) Hungarians Hungary was full with Germanics for centuries so such an assumption seems to me not far fetched.