Dean & Dyball has won a contract to build Olympic sailing facilities in Weymouth and Portland, Dorset.
The Hampshire-based company will enhance the current Weymouth and Portland National Sailing Academy, where it had previously carried out upgrades in 2004.
The venue, which will host all the Olympic and Paralympic sailing events, is expected to be one of the first sites ready for the London 2012 Games.
Dean & Dyball will build a new permanent 150m slipway, a new race-boat parking area, new race-boat lifting facilities and new race-boat moorings which will be sheltered by a wave protection structure.
The contract is thought to be worth around £8 million.
The company beat of competition from a five-strong shortlist which included Birse, Carillion, Edmund Nuttall and Raymond Brown.
Andy Crawford, Dean & Dyball’s southern region director, said: “We are delighted to have the opportunity to return to the WPNSA to complete its transformation into a world class Olympic and Paralympic venue.”
Construction work is due to start on site in spring and be completed by the end of 2008.