When the team started work at Jubilee Oval, the weed infestation was out of control and spreading into neighbouring Ku-ring-gai Chase National Park, threatening to damage the fragile environment. Attempts to clean up the site had failed, including expensive helicopter spraying and controlled burns. The House with No Steps’ team have cleared 95% of the weed infestation, removing thousands of square metres of tall lantana, privet and crofton weeds. In order to regenerate the bush to its natural state, the team collected native seeds to propagate and transplant in the area, and encourage native regeneration. They also built trails and managed drainage to prevent erosion.