The 30-year-old heir to the throne and his pregnant bride are in line to receive the heritage-listed Anmer Hall on the sovereign's Sandringham Estate, where the royal family traditionally spends Christmas.
William spent time at the 10-bedroom late-Georgian mansion as a boy, when it was being leased by family friends, the Daily Express newspaper reported.
There is a swimming pool, tennis court, stable block, conservatory and even a bell tower at the property, which is set at the end of a gravel driveway, close to a church and about 3km from Sandringham House.
While a source said the property has been "earmarked" for the Duke and Duchess of Cambridge, it is unlikely the popular royals will take up residence for some years, with the current lease due to expire in 2017.
Late in 2012 William and Catherine will move into a freshly-renovated apartment at London's Kensington Palace, which will become their official city residence.
The Cambridges currently have a country house in Wales, close by the base where William works as a search and rescue helicopter pilot. They also have a cottage on the grounds of Kensington Palace.
