Pride Plumbing came out and provided a cost estimate to perform the following work: 1) cut an access hole in a closet wall, on the back side of shower; 2) replace a leaking single-handle bathtub/shower faucet valve with a new single-handle model with chrome trim (shower head, shower head wand, faucet valve handle and cover, downspout diverter, and overflow and drain covers) (this would include cutting an access in the shower wall and replacing the valve along with short sections of its hot and cold water supply lines with new PEX piping and fittings).