Fairs picked up the award at the BSME Awards ceremony in London last night, with judges praising Dezeen as "seductive" and offering a "satisfying user experience".
Dezeen was shortlisted for three BSME awards in total - the equal highest number of nominations by any publication at this year's ceremony. Fairs was shortlisted for the Business Brand - Free Circulation award while Dezeen columnist Sam Jacob was shortlisted for Business Columnist of the Year.
"This editor’s website offers a seductive and satisfying user experience, presenting a highly specialist topic with impressively broad appeal," said writer and comedian Andy Parsons, who presented the award.
The BSME awards are widely considered the most prestigious awards in UK publishing. Other winners this year included GQ editor Dylan Jones, who won the men's brand award, and Saturday Times Magazine writer Caitlin Moran, who won the consumer columnist prize. Spectator editor Fraser Nelson won the Editor's Editor of the Year award.
The BSME award is the second major award Dezeen has won. Last year, we were named Digital Business Publisher of the Year by the Association of Online Publishers.
Fairs, who founded Dezeen in 2005, is on the shortlist for Multi-Media Journalist at the International Building Press (IBP) awards next week, where Dezeen is also shortlisted for the Digital Service prize.
In 2005, Fairs won the BSME's Brand Building Initiative of the Year award for the Icon Design Trail - the map-based guide to the London Design Festival that he created while editor of Icon magazine.