Adding 220v

[Robert D.]

so i own this older home built in 1959 here in california. i found a great rental candidate. i think we all know how hard it is to find decent people now a days. anyhow he needs 220v to do some carpentry work at home. he is willing to add or change to 220v all at his expense from start to finish. i have no idea what it entails. i recall when i lived at that home that i wanted to do the 220 deal. i see no harm in this but would like to get your opinion. i told him it needed to be done by an electrical contractor and per code. and also that it should not make any eye sores on the house. this is all talk at the moment as i still need to run his credit etc. need some advice. thanks in advance.