Seeki.eu lists 3+ properties for sale and 3+ to rent in Plouvorn.
The median asking price is €357,000, or €1,140 per m² on a typical 154 m², across sale listings that publish both a price and a floor area.
On the rental side, the median asking rent for a house is €825 a month, across house rentals that publish both a price and a floor area.