Preparation

Due diligence: the documents a buyer will ask you for

Before signing, the buyer examines the company: that is due diligence. A complete file from the outset shortens the sale and reduces the guarantee you will be asked for. Here is what a buyer generally requests.

Why prepare this file in advance

Due diligence is the period during which the buyer checks everything it is taking over: the company, its accounts, its buildings, its leases and its commitments. Every missing document lengthens the timeline, and every grey area turns into either a lower price or a heavier guarantee in the share transfer agreement.

Preparing this file before you even meet a buyer is therefore one of the simplest ways to sell faster and on better terms.

The list below is not exhaustive: every buyer has its own, and every company its particularities.

The company

  • Coordinated articles of association
  • Up-to-date share register
  • Extract from the Crossroads Bank for Enterprises (CBE)
  • Extract from the UBO register
  • Minutes of general meetings and decisions of the management body for recent years
  • Publications in the annexes to the Belgian Official Gazette
  • Shareholder agreements, pledges or options over the shares, where applicable

Accounting and tax

  • Annual accounts for the last three to five financial years, as filed with the National Bank
  • Trial balance and general ledger for the current year
  • Fixed asset and depreciation schedule
  • Corporate income tax returns and tax assessment notices
  • VAT returns, if the company is VAT-registered
  • Correspondence with the tax authorities: audits, adjustments, disputes
  • Breakdown of the shareholder current accounts

Financing

  • Loan agreements and up-to-date repayment schedules
  • Mortgage registrations, mortgage mandates and other security granted
  • Sureties and personal guarantees given by the shareholder

Each building

  • Title deed (deed of acquisition)
  • Cadastral extract
  • Property tax (précompte immobilier) assessment notices
  • Urban planning information and planning permits
  • Soil status document (see below)
  • Energy performance certificate (EPC in Flanders, PEB in Brussels and Wallonia)
  • Electrical installation inspection report
  • For older buildings in Flanders, the asbestos certificate
  • Insurance policies
  • In co-ownership: basic deed, minutes of the latest general meetings, statement of the reserve fund and charges
  • History of major works and quotes for planned works

The soil document depends on the region: the soil certificate issued by Brussels Environment in Brussels, the certified extract from the soil condition database (BDES) in Wallonia, and the OVAM soil certificate in Flanders. In a share deal the buildings do not change owner: the buyer requests these documents as part of its due diligence.

Leases

  • All current leases and proof of their registration
  • Rent roll: tenant, rent, indexation, expiry, deposit
  • Rental guarantees (blocked account or bank guarantee)
  • Rent arrears and disputes with tenants

Contracts and disputes

  • Property management, maintenance and supply contracts
  • Pending or threatened disputes, claims and orders from the authorities
  • Employment records, if the company has or has had staff (rare for a real estate company)

How to organise the file

A well-organised file inspires confidence and saves weeks. A few simple principles:

  • one folder per topic, numbered according to the headings above;
  • one PDF per document, clearly named;
  • a table of contents showing what has been provided and what is still missing;
  • sharing through a secure space rather than by email, and never originals.

Whatever is missing or raises questions should not be hidden: identified early, it gets negotiated in the price; discovered late, in the guarantee. What the liability guarantee covers is explained here.

Sources

← All resources

This article sets out general principles, as at 3 November 2026. It is not personalised legal, tax or financial advice. The valuation of your company should first be established with your certified accountant (comptable-fiscaliste or expert-comptable certifié); I step in from there.

Preparation

Prepare your file before meeting a buyer

A first conversation identifies, in your file, the documents that are missing and those likely to raise questions.

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