Voyeurs going round — right? One checking out a house? (8)
I believe the answer is:
surveyor
'one checking out a house?' is the definition.
(someone who examines a building)
'voyeurs going round right?' is the wordplay.
'going round' is an anagram indicator.
'right?' becomes 'R' (common abbreviation).
'voyeurs' with letters rearranged gives 'surveyo'.
'surveyo'+'r'='SURVEYOR'
(Other definitions for surveyor that I've seen before include "Engineer who provides map-making data" , "One determines boundaries, elevations etc" , "Measure of land or inspector of buildings" , "Building inspector" , "Examiner and map-maker of lands and buildings" .)