Evening all, would like to gather other sparks views on pricing large Victorian town houses in sort after areas in London worth 6m plus, I usually charge 200-250 per day in Kent for your average house adding a few days in case of problems or changes etc, I've been given the opportunity to price these prestige homes for very wealthy clients, I was thinking my usual 20% mark up on materials but unsure on my day rate charges, how high can I go without taking the **** to much?