A Bronx building where a young DJ pioneered hip-hop in the 1970s has been saved from a plan that would have moved it from affordable to market-rate housing, Sen. Charles Schumer said yesterday.

Last year, tenants of the building reached out to DJ Kool Herc, a former tenant, after receiving word that the owner planned to leave an affordable housing program that would have opened the door to rent increases.

During the 1970s, DJ Kool Herc began spinning records at parties in the basement recreation room of the Sedgwick Avenue building.

The hip-hop movement then spread around the world.

The 100-unit apartment building has been deemed eligible to be listed on national and state registers of historic sites.

The affordable housing program, known as Mitchell-Lama, offers owners incentives such as low-rate mortgages and tax breaks in exchange for charging tenants low to moderate rents for a certain period of time.