hi there,
on core units or communal areas, we look at the site, and then look at the total amount oif time that this will take to do ie travel etc,
therefore if we had a crew of two going to do a communal area clean that would take a day we would be looking at the £200 level, we've actually got one contract which take two people one day, about 16 flights of stairs, all hard floor.,
and we invoice £340 per visit. client is happy and have another 4 sites to go and survey.
regards
martin