Yesterday construction crews broke ground on a new moderate-income senior apartment building in East New York. The Coretta Scott-King Senior Houses, which is being built on what was a vacant lot, will have 51 units. More than half of the funding for the $13.7 million project is coming from the U.S. Department of Housing and Urban Development with the rest coming from the city’s Department of Housing Preservation and Development and various city funds. The Ridgewood Bushwick Senior Citizens Council will provide services including medical and social security assistance. Residents will also be able to take exercise and educational classes as well as day trips and other outings. Units will be granted through a lottery to those who earn less than half of the area median income or $30,100 a year for an individual and preference will be given to those over 62 years old. Those who win spots in the building will pay no more than 30 percent of their income in rent.