Airbnb only Part of Belgium’s Housing Affordability Problem

Why It Matters

Short‑term rentals modestly shrink Belgium’s rental inventory, yet the core affordability strain stems from supply‑side constraints, signaling that policy focus must shift beyond platform regulation to boost construction and align unit types with demand.

Key Takeaways

• Airbnb removes ~3,000 homes in Brussels, 2,000 in Antwerp/Ghent.
• Short‑term rentals equal roughly 0.8% of rental housing stock.
• Home‑ownership dropped to 70.9% in 2025, raising rental pressure.
• Construction permits at historic lows, with apartment permits down 8% YoY.
• EU data‑sharing rule may return 1,800 homes to long‑term market.

Pulse Analysis

The rapid rise of short‑term rental platforms in Belgium reflects a broader shift in travel behavior, but the numbers tell a nuanced story. In 2024, over a million bookings translated into more than twelve million overnight stays, and the pace accelerated in 2025. Airbnb’s footprint alone accounts for roughly 0.8% of the nation’s rental housing, pulling several thousand units out of the long‑term market in the country’s most coveted cities. While this contributes to tighter availability, the scale is modest compared with other forces reshaping the housing landscape.

Deeper analysis points to structural supply constraints as the primary driver of Belgium’s affordability woes. Home‑ownership fell from 72.4% in 2022 to 70.9% in 2025, swelling the pool of renters. Simultaneously, construction activity remains at historic lows, with apartment permits down 8% year‑over‑year while demand for smaller units climbs. Rising material costs, higher financing rates, and a spate of construction‑sector bankruptcies further dampen new supply. These dynamics create a mismatch between the types of housing being built and the units most needed, intensifying pressure on rental prices.

Policy responses must therefore go beyond tightening short‑term rental rules. The EU’s May‑2026 data‑sharing regulation promises greater transparency and could restore an estimated 1,800 homes to the long‑term market, yet this alone won’t resolve the crisis. A coordinated strategy that streamlines permitting, incentivizes the construction of smaller apartments, and stabilizes the investment climate is essential. Aligning regulatory frameworks with market realities will be key to unlocking the supply needed to improve affordability across Belgium’s urban centers.