I'm calling around for labor estimates to have my 3-knob bath faucet
replaced with a single handle Moen. I'm explaining that on the other side of
the wall, there's an access panel that was designed in heaven. 4' wide, runs
from floor to ceiling. It's as if you were looking at just the framing in a
half-built house. It's on the first floor. Pipes are also totally accessible
from below. Matter of fact, there's a 6" x 4' slot in the floor. You can
reach right up from the basement, if you needed to.

I've called three plumbers who live within 5-10 minutes of my home. Take a
guess at the estimates. Labor only.