Suburban house backing onto rear of church bells (6)
I believe the answer is:
chimes
'rear of church bells' is the definition.
'chimes' can be an answer for 'bells' ('chime' can be a synonym of 'bell'). I'm not certain of the 'rear of church' bit.
'suburban house backing onto' is the wordplay.
'suburban' becomes 'ch' (I am not sure about this - if you are sure you should believe this answer much more).
'house' becomes 'semi' (short for semi-detached).
'backing' is a reversal indicator.
'onto' means one lot of letters go next to another.
'semi' back-to-front is 'imes'.
'ch'+'imes'='CHIMES'
Can you help me to learn more?
(Other definitions for chimes that I've seen before include "Bell sounds, as fitted to front door" , "Sounds made by bells" , "Set of tuned bells struck with a hammer" , "Rings" , "Ringing sounds" .)