He bought the property for £580,000 23 years ago.
Michael O'Leary wants to make his mansion even bigger.
The Ryanair boss is applying to Westmeath County Council to extend his office and dressing room at Gigginstown House, north of Mullingar.
He purchased the Georgian property on 1,000 acres in 1998 for £580,000 and has spent millions renovating it ever since.
Mr O'Leary is making the application for a fresh extension through a holding company and a decision is due within days.
Fast Track Citizenship Proposed For Immigrants Serving In Defence Forces
Gardaí Investigating Spate Of Laois Thefts
Westmeath Councillor Wants Short Term Let Planning Exemptions For Self Caterers
Plans For 27-Acre Midlands Soccer Facility Rejected
Laois Senator Rails Against Rent Pressure Zone Legislation
Managers Should Consider Remote Work Where Possible - FRS
Tourism Minister Welcomes Government Short-Term Let Restrictions
Former Portlaoise Prison Assistant Governor Criticises Psychiatric Prisoner Numbers
Midlands Local Authority Submits Plans To Extend Living City Initiative
Laois Commuters Spend Up To Two Hours A Day Travelling To Work
"Clarity, Honesty And Fairness Must Come Before Profits" - Midlands MEP
Rent Increases Hit Westmeath Council Tenants
NUJ Warn Oireachtas AI Threatening Journalism
Midlands Tourism Businesses Awarded For Excellence
Man Accused Of Murder In 5 Star Laois Hotel Pleads Not Guilty
Time To Move On From Bord Bia Bickering - Midlands MEP
Three Midlands Schools In Line For New Special Classes
Two Men Hospitalised Following Midlands Assault
Midlands Wind Farm Opponents Face ‘Uphill Battle’
Laois Councillor Wants Clarity On NDP