Humphry Repton was commissioned to landscape the park. A number of lodges and other buildings for the estate were constructed. These were designed by Wyatt's nephew, Jeffry Wyatville (1766–1840). Only one now survives: Cassiobury Lodge, in Gade Avenue, "... the most elaborate in execution — its whole exterior being covered or cased with sticks of various sizes split in two", wrote a Victorian visitor. At this time the park comprised , the Home Park and the Upper Park being separated by the River Gade. The Upper Park became the West Herts Golf Course.