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
- Selling a property, notaire.be
- Soil certificate: information and obligations, Brussels Environment
- Certified extracts from the BDES, SPW Environnement
This article sets out general principles, as at 22 September 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.