I owned a semidetached home in this state (5)
I believe the answer is:
idaho
'in this state' is the definition.
(I've seen this before)
'i owned a semidetached home' is the wordplay.
I cannot really understand how this works, but
'i' could be 'a' and 'a' is found in the answer.
'home' could be 'ho' (abbreviation for house) and 'ho' is found within the answer.
The remaining letters 'id' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for idaho that I've seen before include "North-western US state" , "Another state" , "The Gem State, known for its potatoes" , "US state bordering Canada" , "US state in the Rocky Mountains" .)