The five-figure brief to bring the sponsorship and the brand's ongoing 'Priceless' campaign to life runs until the awards ceremony on 19 February 2014.
MasterCard reviews the account on an annual basis and Kaper handled last year's event. Kaper's work on the brand's Priceless London campaign is unaffected by the review.
House PR will work with MasterCard UK’s in-house comms team, led by head of comms Neil Henderson and comms manager Ked Mather. The House PR team will be headed by associate director Liana Mellotte.
Henderson said: "The Brits 2014 is the biggest music event of the year for MasterCard. House PR was part of a tough pitch and it demonstrated strong ideas, great team chemistry and vast experience on music events. We are looking forward to its energy and great coverage."
The annual music awards are held by the British Phonographic Industry and will feature performances by Katy Perry and Arctic Monkeys.
Ginny Paton, managing director at House PR, said: "Our music credentials, experience working with talent and our creativity will ensure a fresh approach to the sponsorship amplification."
Now in its 16th year, the sponsorship establishes MasterCard as the longest-running music sponsor in Europe.