Harrington Lake the lake, expanding his total holdings to some 1,200 hectares (3,000 acres). He also ordered the demolition of the mill buildings at Harrington Lake, and replaced them with a 16-room cottage that was designed in the Colonial Revival style, very common in the 1920s according to the NCC, but with the addition of large fieldstone chimneys. In 1951, the lake and the property (including neighbouring land belonging to William Duncan Herridge and Stanley Healey) were acquired by the King in Right of Canada to build up preserves of natural areas around the capital. In 1959, supporters of Prime Minister John
Orielton, Harrington Park knighted, "Orielton's" windows were boarded up and some parts of the estate were used for goat farming. Realignment of The Northern Road to the east in the 1970s including a new bridge over Narellan Creek east of the previous one, led to the cutting off of "Orielton's" (south-eastern-running) main drive (towards Narellan Creek). A new extension was added, making the drive a "V" shape and joining the Northern road further north, roughly in line but to the east of the main homestead and farm management complex. The subdivision of "Harrington Park" in the 1990s for urban development has visually encroached