Just door knock - usually a Sunday morning is good as the 'family' are at home
depending on which drive i have used i go for the front door, but usually look for a well used entrance to the
side/rear as this tends to be the place the owners are - don't seem to run into servants these days !
i price the same way as i would for an average semi -- 'x' number of windows times £££ charged per window.
most of these are done 3 or 4 monthly - yet to have one of these babies go 4 wky
Darran