How much does it cost to restore a piano? This is one of the most common questions piano owners ask. The price will vary depending on the type, size, brand, and condition. In Chicago, to completely restore a piano, including the soundboard repaired and varnished, the harp (plate) bronzed, strings replaced, action parts replaced with new parts, keys repaired, bushed, keyframe cleaned & felted, action regulated and tuned up to pitch. Upright Piano starts at $10,000.00 - 14,000.00, depending on the restoration company. Grand Pianos starting at $14,000.00 - $18,000.00