Wheel Bearing Replacement - who to get to do at my home?

If you have the appropriate jack, take the whole hub assembly off (usually 4 bolts hold it to the axle - which can be accessed from the back).

Then take the hub to any repair facility - any car mechanic should be able to do this - less than 1 hour unless the bearings got so hot that the bearing races have welded themselves to the hub. In this case just buy a new hub/brake assembly

Gerry