He said: I believe this is a done deal. They have agreed to sell, we to purchase.
The only thing that could overturn Persimmons bid would be a shareholders revolt at Persimmon or Trafalgar.
The takeover of Ideal will mean the closure of six offices but the firm would not comment on the number of job losses. A 2 million provision has been made to cover reorganisation costs.
The Persimmon move capped a week of corporate activity in the house building sector.
Bellway took a 4.8 per cent stake in the troubled North West house builder Wainhomes.
And Edinburgh-based contractor Miller Group is seeking a buyer for its 20 million turnover house building arm in southern England, Miller Homes Southern.
See page 11