I go Saturday mornings, people usually still in and not stressed or rushed.
you have to consider what areas your doing, elderly in all day every day. will be happy to see someone so be careful your not getting your ear chewed off for an hour or two.
Then your working class will be busy busy so think about when is best to approach these .
daytimes can be good as IF you do find someone at home they will probably have time for a quote.