A developer bought a 0.59-acre Bel Air lot for $3.25 million in 2017 and spent nine years building a 10,950 sq ft brutalist mansion from 4,500 tons of reinforced concrete; it is now listed for $36.5 million

A newly built mansion in Los Angeles’ upscale Bel Air neighbourhood has hit the market for $36.5 million after a development journey spanning nearly nine years. The 10,946-square-foot residence, constructed…