Seeki.eu lists 2,000+ properties for sale and 300+ to rent in Sintra.
The median asking price is €345,000, or €3,463 per m² on a typical 100 m², across sale listings that publish both a price and a floor area.
On the rental side, the median asking rent for an apartment is €1,250 a month, across apartment rentals that publish both a price and a floor area.