In short
In 2025, the median price of a house in Watermael-Boitsfort is €599,000 (119 sales, 13% above the Brussels-Capital Region median), and that of a flat €335,000 (144 sales, 24% above the Brussels-Capital Region median). For a house at that median price, expect about €55,558 in purchase costs if it is your sole and own home.
The questions, answered
How much does a house cost in Watermael-Boitsfort?
In 2025, half of the houses sold in Watermael-Boitsfort went for less than €599,000; a quarter below €500,000 and a quarter above €800,000 (Statbel, 119 sales, resales only).
How much does a flat cost in Watermael-Boitsfort?
In 2025, half of the flats sold in Watermael-Boitsfort went for less than €335,000; a quarter below €269,000 and a quarter above €415,000 (Statbel, 144 sales, resales only).
Have prices gone up in Watermael-Boitsfort?
The median price of houses in Watermael-Boitsfort changed by -8% between 2024 and 2025, and by +52% since 2015 (€395,000 → €599,000), according to Statbel.
What are the purchase costs for a house at the median price in Watermael-Boitsfort?
For €599,000, purchase costs come to about €55,558 if it is your sole and own home (of which €49,875 registration duties), and €80,627 otherwise (of which €74,875 registration duties), notary and deed costs included.
What registration duties apply in Watermael-Boitsfort?
Watermael-Boitsfort applies the Brussels-Capital Region duties: 12.5% of the price, with an abatement on the first €200,000 for your sole and own home if the price is at most €600,000.
Is Watermael-Boitsfort an expensive municipality?
For a house, Watermael-Boitsfort ranks 7th of the 18 municipalities Payotte covers here in 2025, from most to least expensive (Statbel).
Prices in 2025
| Type | Sales | Median price | 1st quartile | 3rd quartile | Regional median |
|---|---|---|---|---|---|
| Houses | 119 | €599,000 | €500,000 | €800,000 | €530,000 |
| Flats | 144 | €335,000 | €269,000 | €415,000 | €270,000 |
Median: half of the sales were below it, half above. A quarter of the sales are below the 1st quartile, a quarter above the 3rd. Statbel publishes no price below 16 sales.
The ten-year trend
| Year | Houses, median | Sales | Flats, median | Sales |
|---|---|---|---|---|
| 2016 | €439,500 | 123 | €212,500 | 102 |
| 2017 | €457,500 | 135 | €220,000 | 123 |
| 2018 | €469,500 | 126 | €245,000 | 110 |
| 2019 | €500,000 | 117 | €250,000 | 129 |
| 2020 | €515,000 | 103 | €280,000 | 97 |
| 2021 | €561,000 | 118 | €275,000 | 142 |
| 2022 | €627,500 | 129 | €289,500 | 142 |
| 2023 | €650,000 | 116 | €290,000 | 149 |
| 2024 | €649,000 | 122 | €296,000 | 127 |
| 2025 | €599,000 | 119 | €335,000 | 144 |
The latest quarters
| Quarter | Houses | Sales | Flats | Sales |
|---|---|---|---|---|
| Q3 2025 | €547,500 | 26 | €336,500 | 46 |
| Q4 2025 | €585,000 | 33 | €300,000 | 29 |
| Q1 2026 | €585,000 | 31 | €312,500 | 38 |
| Q2 2026 | €747,250 | 29 | €290,000 | 36 |
Sources
- Prices: Statbel, real estate prices (based on the sale deeds of the FPS Finance), licence CC BY 4.0.
- Purchase costs: rates and sources of the calculator.