The agencies, thought to be Rainey Kelly Campbell Roalfe/Y&R, Leo Burnett and Abbott Mead Vickers BBDO, were all chosen from the Department for Transport's roster.
The DfT's media agency, Carat, has been signed up to develop the media strategy.
The Home Information Packs, which will be compulsory from January 2007, will simplify and speed up the process of buying a house. The packs will contain information, such as survey reports, that must be provided by the vendor as soon as a house goes on the market.
The advertising is expected to break next year and will be backed by roadshows, a website and seminars for estate agents, buyers, sellers and home inspectors.
The Office of the Deputy Prime Minister has been using agencies from the DfT's rather than COI Communications' roster since 2001, when the DfT took control of its marketing arrangements.
Earlier this month, the DfT dashed any hope of a reconciliation in the near future when it extended the contracts of its roster agencies by another year, with an option to extend this by a further 12 months.