evidence: Up to $25,000 in down-payment support for first-time buyers Harris is proposing the government provide up to $25,000 in assistance for first-time buyers. Her plan says that support will be available to working families who have paid their rent on time for two years and are buying their first home. [...] While that supply is being built, Lincicome thinks Harris’s first-time homebuyer support would push up demand and lead to a spike in prices.