After World War II, Queens and Long Island went through a major suburban building boom leading to the marsh land west of Cross Bay Boulevard to be filled in. This led to the development of many Cape-Cod and High-Ranch style houses on 50 and 60 x 100 lots. This area was developed as "Rockwood Park" to the north and "Spring Park" to the south, together comprising what would be known as "New Howard Beach", while the area east of the boulevard became known as "Old Howard Beach." In the early 1950s farm land north of Rockwood Park was developed with the building of many red-bricked two-story garden style cooperative apartments along with some six-story co-op and condo apartment buildings. A number of private two-family houses were also built in this neighborhood, which was named Lindenwood. The various neighborhoods continued to be developed through the 1960s and 1970s as Cross Bay Boulevard became the area's main shopping district. During the 1990s and 2000s, there was further high-scale development as many of the area's old houses were torn down and replaced with upscale million-dollar mini-mansions.