Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
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OIMAP approval

Obtaining OIMAP approval for an auction house: conditions, file, audit, costs, obligations and sanctions.

Updated : October 28, 2026· 3 min read

A reciprocal commitment

Side Drawer for Cabinet, André-Charles Boulle (c. 1690)
Side Drawer for Cabinet, André-Charles Boulle (c. 1690)

OIMAP approval is issued in five days for €540 excluding taxes. It binds the auction house to specific practices and opens access to the conformity label, to the directory and to an accelerated sale approval procedure.

Approval is open to any auction house duly established in a Member State, whatever its size. It is valid for three years and renewable.

This page details the conditions, the procedure, the obligations and the grounds for withdrawal.

  • Approval
  • Compliance
  • Audit

OIMAP approval in figures

€540Cost excl. VAT
5 daysProcessing time
3 yearsPeriod of validity
4.2%Refusal rate

Source: OIMAP Observatory.

Breakdown

Approvals granted91%
Supplements requested5%
Refusal4%

Outcome of applications in 2024.

Eligibility conditions

The house must be legally established, hold the authorisations needed for its activity in its State, have professional insurance and employ at least one auctioneer or qualified sales manager. It must not have been convicted of handling stolen goods or fraud in the last five years.

It undertakes to respect the approval charter: provenance checks, consultation of the BIOP, transparency of terms of sale, declaration of results, mediation of disputes.

Plate: Diana and Acteon, Maestro Giorgio Andreoli (1522)
Plate: Diana and Acteon, Maestro Giorgio Andreoli (1522)
Portrait Bust of a Man (27 BCE–14 CE)
Portrait Bust of a Man (27 BCE–14 CE)
Christ Driving the Money Changers from the Temple, Rembrandt van Rijn (1635)
Christ Driving the Money Changers from the Temple, Rembrandt van Rijn (1635)

Obligations during approval

An approved house must consult the BIOP database before each sale, keep provenance documents for ten years, declare each result to the Observatory within thirty days and train its staff. It must also inform OIMAP of any change of management, address or speciality.

An audit is carried out every three years. It covers a sample of lots, files and declarations. Minor breaches lead to recommendations; serious breaches may lead to suspension or withdrawal.

What approval changes for buyers

For the buyer, an approved house guarantees that the lot has undergone a check of origin and of the BIOP database. In case of a problem, they have an identified contact and free mediation.

This protection translates into fewer disputes: the post-sale challenge rate is 0.9% for approved houses, against 3.4% for others.

Documents to provide

Application file
DocumentDetailFormat
Articles and registerProof of legal existencePDF
InsuranceProfessional certificatePDF
ManagerQualifications of the headPDF
Terms of saleLatest versionPDF
Signed charterOIMAP commitmentsSigned PDF

Landmarks

  1. Filing

    Online file and payment.

  2. Examination

    Checking of documents.

  3. Decision

    Approval, supplement or refusal.

  4. Audit

    First compliance audit.

Withdrawal of approval

Simple approval or conformity label

Twilight in the Wilderness, Frederic Edwin Church (1860)

Approval

Basic commitment
  • €540 excl. VAT
  • Valid for three years
  • Listing in the directory

Mandatory for sale approval.

Yokkaichi: View of the Mie River, from the series The Fifty-Three Stations of the Tōkaidō, Utagawa Hiroshige (c. 1833–34)

Conformity label

Reinforced commitment
  • €1,200 per year
  • Full audit
  • Increased visibility

Optional.

Self-Portrait, John I Smart (1802)
Self-Portrait, John I Smart (1802)
Painting Enthusiasts at Auction House Bouillon, Honoré Daumier (1862, printed 1920)
Painting Enthusiasts at Auction House Bouillon, Honoré Daumier (1862, printed 1920)
Interior Drawer for Cabinet, André-Charles Boulle (c. 1690)
Interior Drawer for Cabinet, André-Charles Boulle (c. 1690)

Obtain approval

  1. Create

    Open a house account.

  2. Submit

    Send the documents.

  3. Pay

    Pay the €540.

  4. Wait

    Processing within five days.

  5. Display

    Use the approval number.

Before filing

An auction house director

The Market Place, Wells, Muirhead Bone (1891–1953)
« Approval opened up foreign buyers who did not dare bid with us. The return on investment was quick. »
Antoine Bellamy, auction house director

Vocabulary of approval

Charter
Document of commitments.
Audit
Periodic check.
Withdrawal
End of approval.
Suspension
Temporary interruption.

Frequently asked questions

Is approval compulsory?

No, but it is required for accelerated sale approval.

Can small houses obtain it?

Yes, with no size condition.

What happens on expiry?

A renewal is offered, with an audit.

Where do I file the application?

With the Desk.

Useful documents

Contacts

The Pyramid of Cestius, Rome, Michiel van Overbeek (c. 1650–80)
The Pyramid of Cestius, Rome, Michiel van Overbeek (c. 1650–80)
OIMAP ObservatoryParis — Headquarters+33 1 00 00 01 00observatoire@oimap.exampleMonday to Friday, 9 am – 5 pm

See the calendar

Portrait of a Man, Italian Painter

The sales announced by approved houses.

Sales calendar
Image credits (16)
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