Fenland Council has dismissed a proposed new home for Oak Garden Centre owners, who featured on BBC's The Fixer earlier this year.
The council argued David White's proposals offer "no business need" for the home.
The plan had been to sell an existing house on the garden centre site and build a more economical house on nearby land, then put more money into the business to retain its viability.
But planners dismissed the idea.
Oak Garden Centre is run by Brad White after DJ’s, the garden centre he and other family members helped his father David White run, went into liquidation in 2012.
Earlier this year it featured on the BBC2 programme The Fixer, in which Alex Polizzi helps businesses that are having a hard time.