The deal is part of HomeServe’s new marketing strategy to be rolled out during 2010/11.
The marketing activity will promote the breakdown service’s new telephone number on the team kit, which it claims is a first.
Jon Florsheim, chief executive of HomeServe, said: "In choosing a sponsorship partner, we felt it was important to acknowledge our West Midlands roots, and so we were very pleased to be able to strike a deal with West Bromwich Albion and support the team over the next season."
The football club spent last season with no shirt sponsor after a four-year deal with T-Mobile ended the previous season.
Mark Jenkins, West Bromwich Albion chief executive, said: "We are delighted to have HomeServe on board, particularly as this sponsorship brings together two highly-prominent West Midlands brands."
He added: "In the current economic climate, the club is pleased our shirts will feature a successful locally based company with an international profile, at the start of a new initiative."
The club will shortly announce when the branded kit will be available to supporters.
Towards the end of last year, HomeServe introduced a range of "hero" characters into its advertising campaigns, to promote its customer service credentials.
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