The new "urban renewal" movement made its influence felt in Toronto. Large areas, deemed "slums", were cleared. This included the areas of Regent Park, Lawrence Heights and Alexandria Park. The streets and small homes were replaced by mega-blocks with limited streets and apartment buildings. The experiment in social housing would improve the number of affordable units available, at the expense of a large increase in the budgets of Metro and Toronto to maintain the buildings. By the 2000s, Toronto would be in serious arrears on maintenance, and in the 2000s, Toronto has started to dismantle the large projects and replace them with designs more resembling regular neighbourhoods.