Altogether, 22 houses have been identified as being surplus to requirements. Of those, 12 will be let out and the rest are to be sold.
The homes will become available as their occupants retire and new employees will have to find their own accommodation. Other keepers will be moved into suitable property when it becomes available.
Prize areas will be the lockhouse in Oxford, two in Maidenhead, two in Staines and one each in Chertsey and Sunbury.
Eileen McKeever of the Environment Agency said: “We will still man locks to assist boaters with passage through the locks and there will be no impact on how we manage flood risk — we will continue to operate weirs and manage water levels throughout the year as normal.”