Mini Swimming Pools Surge in Popularity Across Belgian Gardens

As Belgium swelters under a reactivated heat wave warning this July, a growing number of homeowners are turning to a compact solution for at-home cooling: the mini swimming pool. According to a report by RTBF, these smaller pools — designed for refreshing rather than serious swimming — now account for 20 to 30 percent of annual sales at major pool companies, reflecting a significant shift in Belgian garden culture.

The Shrinking Pool: A Decade-Long Trend

Industry data reveals that the trend toward smaller pools has been building for decades. Frédéric Gillard, managing director of Waterair, a pool company operating since 1990, notes that the average pool surface area has been decreasing by 10 square meters per decade. Mini-pools, typically under 20 m² and often as small as 10 m² or less, now represent a substantial share of the market.

“It’s more energy-efficient, we consume less water and it’s easier to heat,” Gillard told RTBF, highlighting the practical advantages driving consumer choices.

Real-World Appeal: From Ham-sur-Heure to Urban Gardens

Marjorie, a resident of Ham-sur-Heure near Charleroi, installed a 12 m² mini-pool in her garden last year for approximately €25,000. She now uses it daily during the summer months. “What decided me was a bit the climate here in Belgium,” she explained. “And the fact of having a small pool that integrates very well into the garden. And I also found it cute.”

Her experience reflects a broader trend identified by pool installers across the country. Vincent Siraux, a pool builder at Royal Serenity, describes the phenomenon as the “apéro pool” — a social gathering space rather than a sports facility. “Depending on the fittings, we’re looking at between €20,000 and €25,000. But the pool is complete at that price,” Siraux said. “Everything is integrated, they’re sometimes better equipped.”

Affordability and Practicality Drive Demand

The price gap between mini-pools and traditional installations is substantial. While a classic pool of around 30 m² costs between €35,000 and €50,000, a fully installed mini-pool ranges from €20,000 to €25,000. For even tighter budgets, plunge pools — prefabricated compact basins starting from 4 m² — are available from around €5,000, according to Zwembadkopen.be, a Flemish market resource.

Beyond the initial purchase price, mini-pools offer ongoing savings. They consume less water, require less energy to heat, and use fewer chemical treatment products compared to full-size pools. This efficiency is particularly attractive amid Europe’s ongoing energy concerns.

Regulatory Advantages for Smaller Installations

Belgian homeowners also benefit from favorable regulations for smaller pools. Pools under 10 m² may not require planning permission in some regions, and municipal taxes on pools are typically proportional to size. As Guide-Piscine.fr notes, the regulatory landscape varies by region — Wallonia, Flanders, and Brussels each have their own rules — but smaller pools consistently face fewer administrative hurdles.

A Trend With Deep Roots

The mini-pool phenomenon is not entirely new. Gardening magazine Mon Jardin & Ma Maison first highlighted the trend in 2016, noting that models under 10 m² could be installed without building permits. Nearly a decade later, the trend has accelerated, driven by climate pressures, urbanization, and post-pandemic home improvement culture.

The “Apéro Pool” Culture: A Social Shift

The mini-pool trend is as much about lifestyle as it is about economics. Pool professionals describe a shift away from the traditional lap pool toward what Vincent Siraux calls the “piscine apéro” — a space designed for socializing, relaxation, and cooling off rather than athletic swimming. This aligns with broader post-pandemic trends emphasizing home-based leisure and staycation culture.

In urban areas where garden space is at a premium, the compact footprint of mini-pools makes them particularly attractive. Even a small courtyard or terrace can accommodate a plunge pool or a monoblock model, transforming limited outdoor space into a personal oasis.

Looking Ahead: What the Trend Means for Belgium

The rise of mini-pools represents a democratization of pool ownership in Belgium, making it accessible to households with smaller gardens and tighter budgets. As heat waves become more frequent — Belgium’s national extreme heat warning plan was reactivated on July 4 — demand is expected to continue growing. Industry professionals are adapting their business models accordingly, focusing on smaller, more technologically integrated installations with advanced filtration, heating, and lighting options.

However, questions remain about the long-term implications. Municipalities may need to review tax policies and water usage regulations as more homeowners install compact pools. Environmental advocates will be watching to see whether the per-unit efficiency gains of mini-pools are offset by increased overall adoption. The Flemish market resource Zwembadkopen.be notes that even small pools require regular maintenance, including chlorine treatment and filtration, meaning the environmental calculus is not purely positive.

For now, the message from Belgian homeowners is clear: when it comes to beating the heat, good things really do come in small packages.