The average house price on Sibley Avenue, Harpenden is £442,771. Prices range from £76,000 to £1,350,000.
There are 41 properties on Sibley Avenue, Harpenden.
Average house prices on Sibley Avenue, Harpenden have risen by 782% from £125,000 in 1995 to £1,102,500 in 2025.
Sibley Avenue, Harpenden is in the AL5 postcode district.