A joint venture led by contractor Carillion has won a contract worth £690m to upgrade and maintain Ministry of Defence family accommodation.

The consortium, which comprises Carillion (50%), Atkins (25%) and Enterprise (25%) will be responsible for 45,000 properties in England and Wales for seven years, with the potential for a three-year extension to the contract.

The contract begins in March next year. It was the second MoD contract won by Carillion in as many weeks, after signing a £500m regional prime contract last week with joint venture partner Enterprise.

The prime contract is to maintain about 8500 buildings and other assets in the Midlands, the north of England and Wales, also over a seven-year period, with potential for a three-year extension.

The joint venture will also be responsible for any refurbishment or non-PFI new build for the same portfolio.