The news follows yesterday's decision to pull down a Lego house built by James May as part of the BBC TV show Toy Stories after discussions to move the building to Lego land in its entirety fell through.
More details about the first building event, held in conjunction with Lego UK to benefit their nominated charity, The National Autistic Society, will be announced early next year.
Martin Williams, sales & marketing director of Legoland Windsor, said: “We’re thrilled that the legacy of the Lego House can live on at the park as a giant LEGO set for the nation.
“Our large-scale building events are always extremely popular with guests of all ages. This year hundreds of families helped build two giant mosaics featuring Bob the Builder and J.K. Rowling and only last year thousands of children and their parents came together to construct the world’s tallest Lego brick tower.”