[ms_access] Form design with choosen records

[Ove Billing]

I am not very skilled at Access but try anyway to help a small local
museum to erect a base with their objects. 
One problem to handle (with simplified examples): I think of having a
tblHouse with 4 records (H1, H2, H3 and H4) and a tblRoom with many
rooms (R1, R2 ...), some in H1, others in H2 etc. How do I construct a
form where only rooms in H1 are visible or choosable when first
choosing H1 etc. ? Is this possible? Other ways?