Short-term letting in Watermael-Boitsfort
At a glance
The short-term rental market
In September 2026 Inside Airbnb counted 45 listings in Watermael-Boitsfort, 78% of them entire homes; the median advertised price is €144 a night.
That is 1.8 listings per 1,000 residents, ranking 13 of the 19 Brussels municipalities for density.
73% of listings received at least one review in the last 12 months, and 42% belong to hosts with several homes: the market is already professional.
For the 25 active entire homes, Inside Airbnb estimates a median of 120 booked nights and €20,300 in revenue over the last 12 months — an estimate based on reviews, not a promised result.
2025, in the district: 2,283,842 nights via platforms (Eurostat), 92% foreign.
Property prices
- €335,000 : median sale price of a flat in 2025 (half of sales between €269,000 and €415,000, from 144 sales) — 24% above the median of the region’s municipalities.
- €599,000 : median sale price of a house in 2025 (half of sales between €500,000 and €800,000, from 119 sales) — 18% above the median of the region’s municipalities.
Watermael-Boitsfort compared with neighbouring municipalities
With a median flat at €335,000, Watermael-Boitsfort ranks 5th of 19 municipalities in the Brussels-Capital Region, from most to least expensive.
By population (25,271 residents), Watermael-Boitsfort ranks 18th of 19 municipalities in the Brussels-Capital Region.
A flat sells for 5% more than in Auderghem, the nearest neighbouring municipality (2 km, median €319,500).
The largest municipality nearby is Ixelles, 5 km away (89,162 residents).
| Municipality | Distance | Residents | Flat (2025 median) | House (2025 median) |
|---|---|---|---|---|
| Watermael-Boitsfort | — | 25,271 | €335,000 | €599,000 |
| Auderghem | 2 km | 35,659 | €319,500 | €575,000 |
| Woluwe-Saint-Pierre | 4 km | 42,566 | €370,000 | €725,500 |
| Etterbeek | 5 km | 49,638 | €309,000 | €600,000 |
| Hoeilaart | 5 km | 11,521 | — | €477,500 |
Sources: Statbel, STATEC, Observatoire de l’Habitat, IWEPS. Straight-line distances between municipal centres; rankings computed over the municipalities for which the figure is published.
Our advice for Watermael-Boitsfort
Watermael-Boitsfort is probably the Brussels commune that feels least like a capital city. With the Sonian Forest, garden cities and village squares, it attracts guests looking for exactly what the centre cannot give them: quiet, trees and neighbourhood life on a human scale.
A patchwork of villages
Place Keym and the streets around it are the lively heart of Watermael, with a market and local shops. Around it spread the Le Logis and Floréal garden cities, remarkable interwar developments that draw architecture enthusiasts and curious walkers alike. In Boitsfort, the old village centre, the ponds and Tournay-Solvay Park set a peaceful scene, while the hamlet of Coin du Balai juts right into the forest.
The guests match the landscape: families visiting relatives, couples wanting a green weekend without leaving Brussels, hikers and cyclists, and business travellers who would rather spend the evening somewhere calm than in a standard hotel room. Stays tend to be longer and more relaxed than elsewhere in the Region.
What works here
- A house or large flat with a garden. Properties with outdoor space and several bedrooms match exactly what visitors come for.
- Warmth over urban polish. Wood, natural light, good mattresses and a reading corner let guests carry the feel of the forest into the living room.
- Price with confidence. Position the property on the quality and rarity of its setting rather than trying to compete with budget options in the centre.
School runs and relocations: the ISB effect
On the Kattenberg, in Watermael-Boitsfort, the International School of Brussels occupies a wooded campus beside the Sonian Forest. It teaches an English-language curriculum to pupils of many nationalities, and its calendar shapes a distinct wave of demand in the commune.
Each year, relocating families arrive to visit the school, attend admissions interviews or start the new term before their permanent home is ready. Visiting grandparents come for school performances and graduation. Teachers and consultants join for induction weeks or training. These guests often book at short notice, when a relocation date moves or a house purchase is delayed, and they need something far more practical than a hotel room.
What they value most:
- Proximity to the campus, with the walking or driving time spelled out. Morning drop-offs are the fixed point of their day.
- A family-sized home with separate bedrooms for children, a table for homework and room for luggage, as they often arrive with several suitcases.
- Flexible durations, from a week to a couple of months, with an agreed framework for longer stays that move beyond tourist accommodation.
We advise owners near the Kattenberg to keep an eye on the school’s term dates and to flag them in their calendar: the weeks before and after the start of the school year are when these families search most urgently.
Frequently asked questions
How much does a whole home earn as a short-term rental in Watermael-Boitsfort?
Across the 25 active whole homes Inside Airbnb lists in Watermael-Boitsfort (September 2026), the median is 120 booked nights and about 20 300 € of revenue over twelve months. This is a public estimate drawn from guest reviews, not a promise: your result depends on location, size, the quality of the listing and the management. Hexuvium sends you a free, itemised estimate for your home, based on comparable properties.
What nightly rate should you aim for in Watermael-Boitsfort?
The median nightly rate listed on Airbnb in Watermael-Boitsfort is 144 € (45 listings in September 2026). A fixed price leaves money on the table: demand changes with the day of the week, school holidays and major events. Hexuvium adjusts the price every day from real demand and comparable homes nearby.
Is there a lot of competition in Watermael-Boitsfort?
Watermael-Boitsfort has 45 listings, or 1.8 per 1,000 residents; 42% of listings belong to hosts managing several homes, a sign of an already professional market. What makes a listing stand out: professional photos, fast replies to guests, reliable self check-in, hotel-standard cleaning between stays and prices that follow the calendar.
What does a property in Watermael-Boitsfort cost for a short-term rental project?
In 2025, a flat sold for a median of 335 000 € (half of sales between 269 000 € and 415 000 €, out of 144 sales); a house sold for a median of 599 000 € (half of sales between 500 000 € and 800 000 €, out of 119 sales) in Watermael-Boitsfort (Statbel). Before buying, compare that price with a realistic short-term rental income and booking calendar: Hexuvium sends you a free income estimate for the property you have in mind, based on comparable homes.
Where do guests staying in Watermael-Boitsfort come from?
In 2025, the district counted 2 283 842 nights booked through platforms, 92% of them by guests from abroad (Eurostat). A listing written in several languages, a clear welcome message in English and simple arrival instructions make the difference with these guests.
Can you let short-term in Watermael-Boitsfort without living nearby?
Yes. Hexuvium handles the listing on the platforms, messages with guests, self check-in, cleaning between stays and small repairs. You follow your bookings and income in your owner portal, without having to travel.
Sources and update
Public figures, sources at the bottom; past results, not guaranteed.