"Fully restored" is one of the most abused phrases in the piano market. It can mean a complete $45,000 rebuild by a Steinway-authorized rebuilder, or it can mean someone cleaned the keys and tuned it. Understanding what restoration actually involves — and what it costs — is essential before you buy a rebuilt instrument.
Regulation vs. Rebuild: The Critical Distinction
These terms are often conflated. They describe fundamentally different procedures:
Tuning
Adjusting string tension to correct pitch.
Should be done every 6–12 months. Not restoration.
Voicing
Adjusting hammer hardness to change tonal quality — brightening or mellowing the sound.
Maintenance, not restoration. Changes sound character without replacing parts.
Regulation
Adjusting all mechanical components of the action to manufacturer specifications — key height, blow distance, let-off, aftertouch, and dozens of other parameters.
Should be performed every 3–5 years on a regularly played instrument. Not restoration, but essential maintenance.
Partial Restoration
Replacing specific worn components: new hammer heads, restringing, new damper felts. Original soundboard, strings and action parts retained where serviceable.
Meaningfully extends instrument life. Components replaced are new; others remain original.
Full Restoration / Rebuild
Complete replacement of all acoustic and mechanical components. New soundboard, new strings, new pins, complete new action (or full action rebuild with new hammers, shanks, flanges), often new keytops and felts. Structural repairs as needed.
The result is acoustically a new instrument. All performance components have been replaced.
When a seller says "recently restored," your first question should be: "Can you provide documentation of exactly what work was performed and by whom?" Legitimate restoration generates receipts, invoices, and in some cases, technical reports.
What a Full Restoration Actually Is
A full professional rebuild takes a piano apart to its structural skeleton and rebuilds it with new acoustic and mechanical components. For a Steinway, this typically takes 200–500 hours of skilled labor across several months, depending on the instrument's condition and what work is required.
The process begins with disassembly: removing the action, strings, plate, and in a full restoration, the old soundboard. Each component is evaluated. Some elements — the rim, the bridge, the case structure — are almost always reused if sound. Others are always replaced.
A properly done full restoration on a quality vintage Steinway produces an instrument that competes acoustically with a new Steinway of the same model. The structural components (the rim, the plate, the keys) carry the character of the original instrument; the acoustic and mechanical components are new and will last another 40–60 years.
Component by Component
Soundboard
The spruce panel that amplifies string vibrations. A new soundboard is the single most impactful component in a restoration. Steinway-authorized rebuilders use Sitka spruce soundboards from approved suppliers (Bolduc, Edelmann). A new soundboard changes the acoustic character of an instrument profoundly.
Strings
Treble strings are high-carbon steel wire (Röslau is the preferred brand for Steinway work). Bass strings are copper-wound steel cores, custom wound to the instrument's specifications. A complete restringing includes new tuning pins driven into fresh pinholes in the pinblock.
Tuning Pins and Pinblock
The pinblock is a laminated maple block into which steel tuning pins are driven. Over decades, the wood compresses around the pins and eventually loses its grip. A new pinblock is drilled and fitted precisely to accept new larger-diameter pins. This is among the most technically demanding parts of a rebuild.
Hammers
Piano hammers are felt-covered wooden moldings. They compress and harden with use, gradually becoming brighter and less responsive to voicing. New hammers are softer and can be voiced to a wide range of tonal characters. Top rebuilders use Renner or Abel hammers for Steinway work.
Action Parts
The action mechanism (wippen assemblies, repetition levers, hammers, shanks, flanges) wears with use. A complete action rebuild replaces all moving parts. Many rebuilders use Renner German-made action parts, which are the same supplier Steinway uses for current production.
Keys
The keys themselves rarely need replacement (they are solid spruce). Keytops (the playing surface) are replaced when worn or yellowed. Modern keytops use synthetic ivory-feel materials; original ivory keytops on older instruments may be retained or replaced.
Cost Expectations
Total restoration costs for a Steinway grand by model:
| Model | Partial Restoration | Full Rebuild |
|---|---|---|
| Model S / M | $8,000–$14,000 | $22,000–$32,000 |
| Model A | $10,000–$16,000 | $26,000–$36,000 |
| Model B | $12,000–$20,000 | $32,000–$48,000 |
| Model C | $15,000–$22,000 | $38,000–$55,000 |
| Model D | $18,000–$28,000 | $50,000–$75,000 |
These are 2026 estimates for work performed by qualified independent rebuilders. Steinway factory rebuilds (Hamburg or New York) cost 30–50% more. Geographic variation is significant — New York and Boston rates are higher than Midwest rates.
Evaluating Restoration Quality
How to tell whether a restoration was done well:
- 1.Request documentationA proper rebuild generates receipts. You should be able to see what was replaced, what brand of components was used (Renner, Abel, Bolduc, Röslau are good signs), and who performed the work. Steinway-authorized rebuilder certification matters.
- 2.Check tuning stabilityA piano that was restrung within the past 12 months will need more frequent tuning as strings stretch and stabilize. Ask when the work was done and how many tunings it's had since. 4–6 tunings in the first year is normal and healthy.
- 3.Evaluate the action regulationA well-regulated action has consistent key weight and depth across all 88 keys, clean hammer return without ciphering, and responsive repetition. Play every note slowly. Inconsistency after restoration suggests the regulation was not done properly.
- 4.Listen for soundboard qualityA new soundboard should have even tone throughout the registers with no wolf notes or dead spots. Play scales slowly from bass to treble, listening for tonal gaps. A high-quality soundboard has no obvious break points.
- 5.Verify the pinblockAsk a technician to check tuning pin torque. Each pin should require consistent resistance to turn. Pins that spin freely or feel different from their neighbors suggest a pinblock issue despite claims of replacement.
Red Flags in Restored Instruments
- ✕No documentation of work performed — only verbal claims.
- ✕Unknown or uncertified rebuilder with no references or verifiable track record.
- ✕Cheap hammer brands (not Renner, Abel, or equivalent) on a high-value instrument. If someone spent $45,000 restoring a Steinway B, they used Renner hammers.
- ✕Uneven regulation immediately after claimed restoration — suggests shortcuts.
- ✕New strings but original pinblock — the most critical component was skipped.
- ✕Cosmetically perfect case with acoustically mediocre results — restoration budget was spent on aesthetics rather than function.
- ✕Seller refuses to allow pre-purchase inspection after a restoration claim.
How We Evaluate Before Purchase
Every instrument we offer for sale has been evaluated by a Registered Piano Technician before we acquire it. For instruments represented as restored, that evaluation includes verification of the rebuilder's credentials, inspection of available documentation, and physical assessment of the acoustic and mechanical components.
We do not resell instruments where restoration claims cannot be verified. If a seller tells us an instrument was "completely rebuilt" but cannot produce documentation or identify the rebuilder, we evaluate it on its current merits only — not on the claimed work history.
When we describe an instrument as restored, rebuilt, or having had specific work performed, we can provide the documentation to support that claim. That's the standard we hold ourselves to, and it's the standard you should expect from any reputable dealer.