"We will move to the houses if they are ready"
Translation:Nyumba zikiwa tayari tutahamia
A closer English word order would be "if the houses are ready, we will move (to them)".
Nyumba -- houses
zikiwa -- if they are
tayari -- ready
tutahamia -- we will move to
If you remember your pronouns and tenses, looking for the word starting with those is usually a safe bet.