I inherited an old library: what should I do? (Practical guide 2026)

You have just inherited an old library: hundreds, sometimes thousands of books accumulated over several generations. You wonder whether any of it is worth anything, how to sort through it, and where to begin.

First piece of advice: do not touch anything until you have read this guide. The first actions (moving, cleaning, packing) can destroy in a matter of minutes tens of thousands of euros in potential value.

At La Librairie Antique, we regularly guide heirs through this process. Here are the first 5 steps to take (and, above all, the mistakes to avoid), followed by how to obtain a free and confidential valuation.

💡 To remember: an inherited library does not have a single “overall value.” Often, 5 to 10 % of the books represent 80 to 95 % of the total value. They must therefore be identified: do not sell in bulk to an antiques dealer.

The first 5 steps (and the mistakes to absolutely avoid)

✅ Step 1: Photograph the shelves BEFORE moving anything

Before any movement, take 2-3 wide-angle photos of each shelf. This allows an expert bookseller to spot in 30 seconds the volumes worth closer examination (leather bindings, unusual formats, gilt cartonnage).

❌ Mistake 1: Doing a major clean-up / cleaning the books

Never use a damp cloth, water, alcohol, or aggressive dusting. An old book should be cleaned by a professional (gentle rubbing with chamois leather, fine brush).

A library that has been “tidied and cleaned” often loses 70-90 % of its value compared to its original “as-found” state. Expert buyers pay for authenticity: not for superficial cleanliness.

✅ Step 2: Maintain temperature and humidity

Ideal: temperature 16–22 °C, humidity 45–60 %, no direct sunlight. If the room is damp → use a dehumidifier. If an attic is dry in summer → limit storage to a few weeks.

❌ Mistake 2: Placing books in sealed boxes without ventilation

Sealed boxes + humidity = mould within 2–4 weeks. If storage is necessary, use ventilated boxes or stack flat on shelves with spacing.

✅ Step 3: Quick photographic inventory

Of the 100–500 books that appear oldest / most finely bound / illustrated, take: - Photo of the binding (spine + boards) - Photo of the title page - Photo of the last page (colophon)

→ 3 photos × 200 books = 1–2 hours. This is enough for a preliminary remote valuation by a professional.

❌ Mistake 3: Sorting books yourself based on personal taste

You risk discarding or giving away books that look “ugly” but are actually the most valuable (plain copies in original editions often fetch 10× the price of handsome bindings on later reprints).

✅ Step 4: Identify the 5 categories that may be worth a lot

• Pre-1820 books (leather binding, engravings)
• 19th-century illustrated books (gilt cartonnages, engravings by Doré, Riou, Bayard...)
• 20th-century first editions (NRF, Gallimard, Pléiade: preferably WITH dust jacket)
• Signed books (author’s signature)
• Old scientific books (medicine, astronomy, botany)

❌ Mistake 4: Selling to a flea market dealer or house clearer

They typically offer €50-500 for 1,000 books without sorting: that is, 5 cents to 50 cents per book. On a library that could be worth €30,000 after professional sorting, you lose 99% of the value.

✅ Step 5: Get a FREE appraisal

Before making any irreversible decision, request a free expert appraisal from 2-3 specialist antiquarian booksellers (including La Librairie Antique). It’s free, with no obligation, and gives you a benchmark so you don’t get ripped off.

How to sort your inherited library: practical guide

For 100–1,000 books, here’s a quick 4-pile sorting grid:

Pile 🌙 EXPERTISE REQUIRED

• Full leather binding (smooth or grained leather)
• Book dated before 1900
• Unusual format (folio, quarto, miniature)
• Gilt cartonnage (e.g., Hetzel style)
• Spine with raised bands and gilt titling
• Gilt edges
• Book with paper or rhodoïd dust jacket
• → DO NOT SELL before expert appraisal

Pile 📚 POTENTIALLY VALUABLE: to be appraised

• Book 1900–1960 in good binding
• Book signed by the author
• Numbered book (“Copy no. X”)
• Book marked “author’s proof” or “review copy”
• → Photograph and send to an expert bookseller

Pile 📖 GENERAL READING

• Common post-1960 edition
• Paperback
• Book club edition (France-Loisirs, Reader’s Digest Selection)
• → Sell to flea markets, donate to charities, or sell for 5–50 cents per book

Pile 🗑️ UNSALABLE

• Book with mould, torn, incomplete
• Old magazine without a known illustrator
• School textbook post-1980
• → Paper recycling

Immediate preservation: protect while waiting to sell

If you decide not to sell immediately (or if the appraisal takes a few weeks), follow these minimum rules:

Emergency protections: - No tissue / handkerchief inside (leaves marks) - No sticky tape on the book (leaves residue) - No pen / pencil on the book (annotations reduce value) - No handling with greasy or sugary hands

Estimating value: self-assessment vs professional appraisal

Self-assessment: limits

What you can do alone: - Identify “modern” books with little value (mostly post-1970) - Check edition-originale.com or our catalogue if a title appears at more than €200 - Spot fine leather bindings and gilt-paper boards

What you CANNOT do alone: - Authenticate a true first edition (highly technical) - Distinguish an original Hetzel binding from a restored one - Assess the impact of a dedication or ex-libris - Know 2026 market prices (volatile)

Professional appraisal: what you get

• Precise identification (edition, condition, rarity)
• 2026 value range (low, median, high)
• Selling advice (as a lot, individually, on consignment)
• Estimated costs (bookseller’s commission, possible restoration)

Cost: usually free with antiquarian booksellers (who hope to buy or take on consignment).

Selling as a lot, individually or keeping: decision guide

Sell AS A LOT to a bookseller

Advantage: quick cash (24–72 h) Disadvantage: average price (bookseller takes 40–60 % margin) Best if: large library (>500 books), need to liquidate fast, no time or space to manage.

Sell INDIVIDUALLY on consignment

Advantage: better price per book (bookseller takes 25–40 % instead of buying) Disadvantage: takes months (3–12 months), 10–30 % of books may not sell Best if: rare books (>€500 each), not in a hurry.

Sell AT AUCTION

Advantage: Potential high price (public auctions) Disadvantage: 25-35% fees, unsold books returned, long process Best for: Exceptionally rare items (>€5,000 each), signed copies.

Keep

Consider if: Sentimental value, coherent and interesting collection (author collection, thematic), available space. Note: Quality conservation costs €50-200/year for a 1,000-book library (humidity control, air conditioning, protection).

Get a FREE ESTIMATE of your library

At La Librairie Antique, we offer a free and confidential estimate based on photos OR on-site (Paris and Greater Paris area, no fees).

For remote estimate (photos)

📧 Send to [email protected]: - General photos of the shelves (3-5 photos) - Detailed photos of 10-30 books you consider most valuable - Optional details: author(s), approximate year, origin

Our expert will respond within 48 hours with a global value range and recommendations for next steps.

For on-site estimate (Paris)

📧 Email [email protected] (appointment-based quote)

🔒 Confidentiality guaranteed. Your information is never shared. No obligation.

Request a free estimate

FAQ: Frequently asked questions about inherited libraries

Q: Do I need to go through a public auctioneer? A: Not necessarily. An antiquarian bookseller is usually better suited for books valued under €5,000 each. Auctioneers charge 25-35% fees and are only relevant for exceptional pieces.

Q: How do I know if my library is worth expert evaluation? A: Always get an estimate. The evaluation is free. Even a seemingly "ordinary" library may contain 2-3 valuable books worth more than the rest.

Q: What if I want to donate my library to an association or public library? A: A commendable gesture, but get an estimate first. Many public libraries refuse bulk donations (sorting issues). Associations like Emmaüs or the Red Cross always accept. Tax tip: A donation to a recognised public-benefit association with a receipt can qualify for tax reduction.

Q: How long does it take to sell a library? A: Sale as a lot to a bookseller: 24-72 hours. Sale on consignment: 3-12 months. Sale at auction: 2-6 months until the auction.

Q: Are there any hidden fees? R: None with us. Free appraisal, free collection (Paris + suburbs). If we purchase: the purchase price is net. If we take on consignment: clear commission (25-40% depending on value), no entry fees.

Q: What should I do with old magazines, newspapers, archives? R: Often little unit value, but some collections can be worth a lot (Art Deco illustrated magazines, early 20th-century avant-garde reviews). Include in the appraisal.

To go further

📖 Related guides: - How to appraise an old book ✓ silo #1 - Identifying an original Hetzel edition - How to date a book without a date

📚 Thematic catalogue: - Old books by Jules Verne - 18th–19th century leather bindings