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 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.