The current selection in Walhain includes 2 flats for sale. Their average listed price is €287,500, with the cheapest at €275,000 and the most expensive at €300,000. The municipality has 7,187 residents living across 38.1 km². Its average age is about 38, and women make up 50.2% of the population. The average net income is €21,926 per person per year, while 76% of residents own their homes. Nationalities are 96.1% Belgian, 1.3% French, 0.5% Italian, 0.4% Romanian, 0.2% Spanish, 0.2% British, 0.2% Portuguese and 1.2% other.
Apartment buildings make up 6.6% of the dwelling stock; houses account for 93.4%. Across Walhain, dwellings average 6.4 rooms, and buildings were generally built around 1935. The local building mix comprises 56.8% open-type houses, farms and castles, 26.1% semi-closed houses, 7.2% closed-type houses, 6.4% buildings and apartment blocks, 2.6% other building types and 0.9% commercial houses. The 2 flats currently listed for sale sit within this predominantly house-based housing stock.
The N4, N243a, N243 and N273 are among Walhain’s main roads. By car, the A4 / E411 - E25 entrance is 5 minutes from the centre, and the A15 / E42 entrance is 17 minutes away. The first motorway route connects Brussels, Namur, Arlon and Luxembourg City; the second serves La Louvière, Charleroi, Namur and Liège. Public transport includes 7 bus lines, among them TEC lines 24, 25, 34, 52 and 543. The closest stations to the centre are Chastre, Ernage, Blanmont, Gembloux and Mont-Saint-Guibert.
Walhain has 2 nurseries, 4 nursery schools and 4 primary schools, but no secondary school. Le Petit Favia and Les P'Tits Loups are examples of local nurseries; schools include Ecole Fondamentale Communale and Ecole Fondamentale Autonome Nil-Saint-Vincent. For groceries, there are 2 Louis Delhaize stores, 1 Intermarché and 1 Delhaize in the commune. No EV charging station, shared-bike scheme or shared-car service is known in Walhain. Brussels South Charleroi Airport can be reached in 27 minutes by car or 124 minutes by public transport.