Echo One Harrow HA2 Timeline News and progress updates from Echo One new development in Harrow HA2 Post a new milestone Over 80% Sold! Echo One is now over 80% sold! Prices starting from £337,500. 04/08/2020 by Buildington Over 70% Sold! Over 70% Sold! 1 and 2 bedroom apartments available from £337,500. 17/02/2020 by Buildington