There are 20 flats for sale in Sint-Pieters-Leeuw. Their listed prices run from €229,000 to €398,000, with an average price of €281,050. The municipality has 34,228 inhabitants across 40.7 km², and the average age is about 40. Home ownership stands at 68%; average net income is €18,410 per person per year. Residents are 51.1% women. Nationalities are recorded as 84.7% Belgian, 2.6% Italian, 2.1% Portuguese, 1.9% Romanian, 1.6% Spanish, 1.4% Polish, 1.1% Moroccan and 4.6% other. Households own an average of 1.2 cars.
Apartment buildings form 25.3% of the local building stock, compared with 74.7% houses. The building-type breakdown is 24.5% buildings and flat blocks, 34.4% closed-type houses, 19.9% open-type houses, farms or castles, 18.2% semi-closed houses, 1.9% commercial houses and 1% other types. Buildings were generally built around 1954; accommodation has an average of 5.6 rooms or fewer. From the centre, the R0 entrance is a 5-minute drive, while access to the A8 / E429 - E42, serving the Halle–Tournai–Lille direction, is 8 minutes away. The N6 and N261 are also available road connections.
Bus links include De Lijn lines 142, 144, 170 and 171, plus STIB line 50. The nearest stations to the centre are Lot, Buizingen, Huizingen, Ruisbroek and Beersel. No metro or tram lines are specified. Families have 9 nurseries, 10 nursery schools and 10 primary schools in the municipality, alongside Go! Middenschool Lennik. Named examples include Hotel Samson and De Kinderdroom nurseries; Vrije Basisschool - Don Bosco and Vrije Basisschool - Jan Ruusbroec nursery schools; and Gemeentelijke Basisschool - Wegwijzer and Vrije Basisschool - Don Bosco primary schools.
For groceries and everyday shopping, there are 3 Carrefour and 3 Delhaize stores, plus 1 each of Albert Heijn, Louis Delhaize, Delitraiteur, Aldi, Lidl and Colruyt. Electric-car drivers can use 4 charging stations. The municipality has no shared bicycles or shared cars. Brussels Airport can be reached in 24 minutes by car or 72 minutes by public transport. The apartment listings sit within a municipality where houses still account for most of the building stock, while the current flat-sale prices range from €229,000 to €398,000.