The association has turned to Quintus weeks after rules came in requiring home owners to have the packs in place.
When the new rules were introduced in April, shadow housing minister Grant Shapps promised a Tory government would scrap Home Information Packs (HIPs) outright.
He said: 'HIPs have already harmed the market and discouraged sellers, and now Gordon Brown is making it even worse. These changes will make buying and selling a home even more of a legal minefield and more stressful.'
But Quintus will look to stress the benefits of HIPs to Tory decision-makers and political opinion-formers before the policy makes it into the Tory election manifesto. The agency is likely to argue that the packs actually speed up the home buying and selling process by providing important information about a property upfront.
Quintus will also contend that consumer is opinion is shifting now people are becoming used to the idea of HIPs, and that the Tories should shift their position.
Quintus previously worked for AHIPP in 2007 when the packs were launched, helping the association promote them. Quintus MD Chris Guyver said: 'We are looking forward to working with AHIPP again on a focused lobbying campaign.'