The charity, which spoke to several undisclosed agencies with experience of working in the charity sector, put the account up for review in February. Its most recent work has been by WWAV Rapp Collins West.
Hooper Galton has been briefed to create a campaign highlighting the issues of bad housing as well as homelessness, in order to dispel the preconception that fewer people sleeping on the streets means the homelessness problem is solved. The charity wants to communicate that millions of people live in poor housing.
Oliver Lewis-Barclay, a managing partner at Hooper Galton, said: "We need to make the brand compelling to more than the regular charity viewers. It needs to be something that people talk about."
The hiring comes after increased activity in the sector. In November, the Big Issue Foundation launched its first campaign for two years, by TBWA/London, highlighting the plight of homeless people.
Shelter operates a network of 50 housing aid centres, projects and surgeries, a 24-hour helpline and training courses for homeless people. Ben Jackson, its director of external affairs, said: "Our challenge is to make it clearer to people what we do and what we stand for. We have had a run of campaigning successes, but the record numbers living in emergency housing makes the need for Shelter greater than ever."