English Translation
We moved house last year.
Literally ‘we moved to a new home’. ‘House’ is not in the Finnish sentence
“Move house” is a set expression in English and should not be taken literally.
Fun fact: Finnish koti traces its origins back to kota, a kind of hut, i.e. a primitive house: kota - Wiktionary, the free dictionary. Swedish has borrowed that word, as kåta.