Self storage in Belgium: market, software and PEPPOL compliance

Belgium is one of Europe's most dynamic self storage markets. With strong population density, high urbanisation rates and a thriving SME sector, demand for flexible storage solutions continues to grow. At the same time, Belgian operators face unique challenges: a bilingual (or trilingual) market, the imminent PEPPOL e-invoicing mandate, and customer payment preferences that differ from neighbouring countries. This article examines the Belgian self storage landscape and how operators can position themselves for success.

The Belgian self storage market

Belgium currently has approximately 200 self storage facilities, concentrated in the Brussels-Capital Region, Antwerp, Ghent, Liege and the suburban corridors connecting these cities. The market has grown steadily over the past decade, with new facilities opening at an accelerating pace since 2020.

Several factors make Belgium particularly attractive for self storage:

• High population density — Belgium is one of the most densely populated countries in Europe. Smaller living spaces, especially in urban areas, drive demand for external storage.
• Strong SME economy — Belgium has a high density of small and medium enterprises that need flexible, affordable storage for inventory, equipment and documents. B2B storage rentals represent a significant share of the market.
• Expat and international community — Brussels' role as the capital of the European Union creates a large expat community with frequent relocations. These customers need temporary storage and expect seamless, multilingual service.
• Limited residential storage — Many Belgian homes, particularly older properties and apartments, have limited built-in storage. Basements and attics are often too small, damp or inaccessible for practical use.

The penetration rate — square metres of self storage per capita — remains below that of the Netherlands, the UK and the Nordics, indicating substantial room for growth. Industry analysts expect the Belgian market to double in size over the next decade, driven by urbanisation, e-commerce growth and increasing consumer awareness.

The Flemish and Walloon market

Belgium's linguistic divide has practical implications for self storage operators. The Flemish (Dutch-speaking) north and the Walloon (French-speaking) south function as distinct markets in many respects:

Language. Your booking platform, contracts, customer communications and website must be available in Dutch and French at minimum. English is increasingly expected, particularly in Brussels and by international customers. Management software that supports multilingual operations is essential, not optional.

Customer behaviour. Digital adoption and online purchasing behaviour are broadly similar across Belgium, but local search patterns differ. Flemish customers typically search in Dutch ("opslagruimte huren"), while Walloon customers search in French ("louer un box de stockage"). Your SEO and advertising strategy needs to cover both language markets.

Regulatory environment. While federal regulations like PEPPOL and VAT apply nationwide, certain permits, zoning rules and environmental regulations are managed at the regional level (Flanders, Wallonia, Brussels-Capital). Verify local requirements before developing a new facility.

PEPPOL e-invoicing: the 2026 mandate

Belgium is at the forefront of European e-invoicing adoption. From January 2026, all Belgian businesses are required to send and receive B2B invoices electronically via the PEPPOL network. This is not a voluntary opt-in — it is a legal obligation that applies to every Belgian self storage operator.

The mandate means that:

• All invoices to Belgian business customers must be sent as structured electronic documents (UBL format) via the PEPPOL network.
• You must be able to receive PEPPOL invoices from your own suppliers.
• PDF invoices sent by email will no longer satisfy the legal requirement for B2B transactions.
• You need a PEPPOL ID (typically based on your KBO/BCE enterprise number) and a connection through a certified access point.

For self storage operators, the practical impact is significant. If you have B2B tenants — companies renting units for stock, archives or equipment — every monthly invoice needs to go through PEPPOL. Operators who have not prepared risk compliance issues and potentially losing business customers who require proper e-invoicing.

The good news is that most Belgian accounting packages (Exact Online, Yuki, Octopus, Horus) already support PEPPOL or are adding support ahead of the deadline. The key is ensuring your management software integrates properly with your accounting system so that invoices flow automatically. Read our detailed guide on PEPPOL e-invoicing for self storage for more information.

Payment processing in Belgium

Belgian customers have distinct payment preferences that your management software must accommodate:

Bancontact. Belgium's dominant debit card payment method, used for the vast majority of electronic transactions. Any self storage platform that cannot process Bancontact payments will lose Belgian customers at the checkout. Bancontact integration through Mollie ensures seamless processing.

SEPA direct debit. For recurring monthly payments, SEPA direct debit (domiciliering/domiciliation) is the standard method. Customers sign a mandate, and subsequent payments are collected automatically. This is the most reliable method for reducing late payments and administrative overhead.

Credit cards and iDEAL. While less dominant in Belgium than in other markets, credit cards are used by international customers. iDEAL is relevant for operators near the Dutch border who serve cross-border customers.

Mollie, the payment service provider integrated with MyYounit, supports all these payment methods in a single integration. This means Belgian operators can accept Bancontact for one-time payments, set up SEPA direct debits for recurring charges, and process credit card payments for international customers — all within the same platform.

Software requirements for Belgian operators

Given the specific characteristics of the Belgian market, operators should evaluate self storage software against these Belgium-specific criteria:

• Multilingual interface — The platform must support Dutch, French and ideally English, both for the customer-facing booking portal and for internal management.
• PEPPOL-ready accounting integration — Direct integration with Belgian accounting packages that support PEPPOL is essential for meeting the 2026 mandate.
• Bancontact support — Payment processing must include Bancontact alongside SEPA and credit cards.
• Belgian VAT handling — Correct application of Belgian VAT rates (21% standard, 6% for certain services) and proper handling of intra-community transactions.
• GDPR compliance with EU hosting — Belgian data protection authorities (GBA/APD) are active in enforcement. GDPR compliance and EU data hosting are non-negotiable.
• Electronic access control — For operators pursuing an unmanned model, integrated access control through systems like MyLock provides the automation backbone.

Why MyYounit fits the Belgian market

MyYounit was built in the Benelux, for the Benelux — and that makes Belgium a natural fit. The platform addresses every Belgium-specific requirement discussed in this article:

Multilingual support ensures that both Flemish and Walloon customers can book, sign contracts and manage their storage in their own language. Mollie integration provides Bancontact, SEPA direct debit and credit card processing in a single solution. Accounting integrations with Exact Online, Twinfield and other packages ensure PEPPOL-ready invoicing. MyLock access control enables fully unmanned operations. And EU-hosted data processing keeps Belgian operators on the right side of GDPR.

For Belgian operators looking to modernise their operations, expand their portfolio or launch a new facility, MyYounit provides a platform that understands the local market. That local knowledge — from Bancontact support to PEPPOL compliance — is the difference between a management system that works in Belgium and one that was built for Belgium.