Buyer assuming loan, who pays what?

A home where I currently hold the note is being sold to new buyers and I’m allowing my loan to be assumed. Not going to charge any assumption fee but neither am I going to pay the costs of having an attorney transfer the title. The attorney will actually go to the county and walk the title through the various county offices and then the BMV. My question to everyone is what is a fair allocation of costs between the buyer and seller? At a bare minimum, I envision the following:

SELLER:

cost to prepare and have everyone sign the bill of sale

costs for having their signatures notarized

BUYER:

all transfer costs at the county and BMV

cost for attorney to supervise signing of loan assumption documents that I prepare

I guess my big question is who bears responsibility for the attorney’s time to drive to the courthouse and BMV and walk everything through?

Any and all thoughts are welcome.

Rolf

Wheat Hill