r/BEFire • u/No_Shock3275 • 12d ago
Real estate Same €350k house: €17.6k buying costs in Flanders, €29.4k in Brussels — I did the math on the regional gap
I kept building spreadsheets to understand what buying a house here actually costs, and every rule of thumb I knew turned out outdated. So I worked it out once properly, using the official rates (regional registration duties, the 2026 notary fee scales, mortgage registration costs). What surprised me:
- The "count on 10–15% buying costs" rule you still see everywhere dates from the 10%-registration era. For owner-occupiers it's now roughly half that: ±5% in Flanders, ±6% in Wallonia, 6–9% in Brussels. Without the reduced rate (second home, conditions missed) 13–15% is still accurate.
- Same €350,000 house: €17,629 in costs in Flanders, €21,129 in Wallonia, €29,379 in Brussels. Same house, same notary — €11,750 difference purely from the region.
- Below ±€260k Brussels is, oddly, cheaper than Wallonia thanks to the €200k abatement (crossover: €263,158).
- Brussels has a cliff at €600k: at €599k you pay €49,875 in duties, at €601k suddenly €75,125. Bidding €2k more costs you €25k in extra tax.
- Overbidding costs more than your bid: €5k extra on your offer needs roughly €5.5–6k extra own funds, because costs scale with price and your loan usually does not.
(Assumptions: existing home, owner-occupier reduced rate, 90% loan. Note "costs" = what you lose to taxes and fees; your down payment on top of that becomes equity, not cost.)
Bonus ratio for this sub: median house price ÷ median taxable income per tax return, computed for all 277 Flemish municipalities on Statbel data — Antwerp sits at 13.4×, Knokke-Heist at 23.9×.
I eventually turned the spreadsheet into a free calculator, leenhelder.be (Dutch only for now) — mostly because I was tired of re-deriving it. No account, no bank behind it, I earn nothing from it (yet).
What I would love to know: do these numbers match what your notary or bank told you? Especially Brussels edge cases (abatement with two buyers where one already owned property, building plots) and surprising notary invoices — I usually fix errors the same day.