House intermittently providing shade (3)
I believe the answer is:
hue
'shade' is the definition.
(thesaurus)
'house intermittently' is the wordplay.
'intermittently' indicates alternate letters.
The alternating letters of 'house' are 'HUE'.
'providing' is the link.
(Other definitions for hue that I've seen before include "Shade, aspect; Vietnam port" , "General hubbub - . . . and cry" , "Tone, shade" , "appearance" , "Cast" .)