There are two subheadings under Piano repairs:
Reconditioning by definition is the process of putting a piano back in good condition by cleaning, repairing, and adjusting for best performance with parts replacement only where necessary. This is most appropriate for a piano with only moderate wear or those of medium value with average performance requirements. Reconditioning is designed to improve a piano's performance, keeping in mind both costs and benefits.
Rebuilding involves complete disassembly, inspection, and repair as necessary, including replacement of ALL worn, damaged, or deteriorated parts. This piano is then reassembled, tested, and adjusted to the same or similar tolerances as new.
COMPLETE PIANO REBUILDING includes the entire pianos structure including: soundboard, bridges, pin block, and strings -- as well as the action, keyboard, and case refinishing.
PARTIAL PIANO REBUILDING includes only one or two of these areas, for example rebuilding of the action and structure, but not case refinishing.
Rebuilding restores the piano to original condition or better. Such comprehensive work is usually only practical for high-quality instruments where maximum performance and longevity are required.