The Estate has over 400 acres of permanent grassland. 150 acres of parkland surrounds Raveningham Hall and Gardens, with 200 acres of low laying fresh water grazing marshes within the Broadland National Park. Traditionally the Estate used its dairy herd of Holsteins to graze the park; but with the demise of the milk industry in the eastern region, the Estate has replaced this herd with beef single sucklers which now graze the Park. Kent sheep follow the increasing herd of pedigree Sussex cattle onto the Park and marshes. This mixed grazing preserves landscape features and enhances biodiversity.