Seeki.eu lists 550+ properties for sale and 45+ to rent in Groningen.
The median asking price is €395,000, or €3,589 per m² on a typical 113 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 €1,195 a month, across apartment rentals that publish both a price and a floor area.