Lewd development with Heather at home (8)
I believe the answer is:
dwelling
'home' is the definition.
('dwelling' can be a synonym of 'home')
'lewd development with heather' is the wordplay.
'development' indicates an anagram.
'with' says to put letters next to each other.
'heather' becomes 'ling' ('ling' can be a synonym of 'heather').
'lewd' with letters rearranged gives 'dwel'.
'dwel'+'ling'='DWELLING'
'at' acts as a link.
(Other definitions for dwelling that I've seen before include "Home" , "Place of residence" , "Living; abode" , "house" , "lodge" .)