The O'Rourke family increased its wealth by one-third to £90m this year from an estimated £60m last year, bringing it into contention with the Wates, whose marketable wealth rose from £65m to £90m.
This is still small beer compared with the seriously minted Keith Miller and family. They climbed to £265m from £185m in 2001.
Other industry high achievers were were Persimmon owner Duncan Davidson, who now has a fortune of £95m, up from £65m last year, and Galliard Homes owner Stephen Conway, whose asset value has risen from £35m last year to £90m today.
Tom Bloxham, owner of developer Urban Splash, has appeared on the list for the first time with his fortune of £55m. Peter Prowting and family also makes their debut with a pile worth £77m.
Tony Pidgley, who has a £32m stake in Berkeley Homes, saw his personal wealth slip from £60m to £48m.