On 26 October 2026, 70 apartments were for sale in Watermael-Boitsfort. The median asking price is €385,000 and the median estimated rent €1,506 a month, a median gross yield of 4.7%. After registration duty (12.5%), notary fees, 5% vacancy and yearly running costs, the median net yield is 3.3%.
Half of the apartments have a net yield between 2.9% and 3.7%. For 60% of them the rent is estimated from rentals on the same street or within walking distance; 7% had to be approximated with our model.
| Listings analysed | 70 | |
|---|---|---|
| Median asking price | €385,000 | half between €295,750 and €505,000 |
| Median estimated rent | €1,506 per month | |
| Median gross yield | 4.7% | |
| Median net yield | 3.3% | half between 2.9% and 3.7% |
| Rent estimated from street or nearby rentals | 60% | |
| Approximated rent estimates (model) | 7% | |
| City reference rent | €1,375 per month | median of 38 rental listings |
| Region | Brussels Region | |
| Registration duty | 12.5% | |
| Total purchase cost (median) | €437,392 | asking price + registration duty + notary fees incl. VAT |
| Data from | 26 October 2026 |
| Subtype | Listings | Median price | Median rent | Gross | Net |
|---|---|---|---|---|---|
| Apartment | 55 | €385,000 | €1,528 | 4.8% | 3.4% |
| Studio | 5 | €215,000 | €924 | 5.6% | 3.2% |
For every listing we estimate the rent from comparable rental listings: first on the same street, then nearby, then city-wide, and only when that is not enough with a model. Gross yield is the annual rent divided by the asking price. Net yield accounts for registration duty, notary fees including VAT, 5% vacancy, property tax, insurance, service charges and maintenance, for a cash purchase. The median error of the rent estimate for apartments is 13.0%. Read the full methodology.
Use the interactive tool above to look at every listing and enter your own costs.
Updated 26 October 2026. PandPeil is an independent, free information project and is not affiliated with Immoweb. Figures are aggregated from public listings on Immoweb.be and estate agents’ websites; the listings themselves belong to the advertisers. Estimates only, not financial advice.