RETURN ON INVESTMENT
What certification actually returns.
The return on a WiredScore or SmartScore certification does not come down to an automatic rental premium. In Belgium and Luxembourg, it lies first in the ability to evidence, improve and demonstrate an asset's digital performance: connectivity, resilience, smart services, quality of operation and readiness for future use.
A Cushman & Wakefield study published in 2025, The Smart Premium, based on ten years of leasing data in the central London office market, observes an average rental premium of 4.1% for WiredScore-certified buildings, rising to 7.3% where WiredScore and SmartScore are combined. These figures indicate the value a mature market recognises, but they do not transfer mechanically to the Belgian or Luxembourg markets.
Five levers of value
Rental attractiveness
Occupiers, particularly international ones and heavy digital users, can verify the quality of the asset's connectivity and services before committing.
Certification is particularly relevant for new offices, major refurbishments, prime assets, institutional portfolios and assets targeting international occupiers. On its own it guarantees neither a higher rent nor faster letting.
The real return lies less in displaying a label than in having an asset that is better designed, better documented, more resilient and easier to defend before a demanding tenant or investor.