The expansion will include the addition of nearly 200 new lodges at the holiday village.
An Bord Pleanala has given Center Parcs the go-ahead for a €100 million expansion.
The Holiday Village had originally received planning permission last year for the addition of nearly 200 new lodges, but that decision was appealed to ABP.
The plans also include the provision of a new restaurant and coffee shop, and the installation of solar panels.
The development will also include the extension of the existing Spa, the Treetop Sauna and Pool, as well as a number of restaurants and cafes.
An Bord Pleanála has upheld the original decision, subject to 17 conditions - those include a pre-and-post works survey of the existing roads, which it says will be in the interest of traffic safety.
Niall Horan Teases Irish Tour Dates
Midlands Meteorologist Explains Rise In Earth's Climate
Westmeath Entrepreneur Goes Global With 'The Raw Network'
BnM Granted Approval For 100m Offaly Wind Monitoring Mast
Longford Westmeath TD Criticises 'Hands-Off' Government
Evictions In Ireland Expected To Surge
Westmeath Man Avoids Jail For Dublin City Punch-Up
Midlands Man Uses Survival Skills To Rescue Missing Teenagers
Midlands Ireland Conference Celebrates Regional Transformation
Westmeath Man Calls for Support In Fundraiser After MND Diagnosis
House Prices On The Rise In The Midlands
Drug Convictions Soar In Midlands
Dog Has New Best Friend After Offaly Rescue
TII Pressured To Provide Update On Major Midlands Road Project
Edenderry Festival Lineup Revealed
Midlands-Based Student Takes Bronze At Culinary Contest
New Legislation Just The First Step -Midlands Cancer Support Centre
Irish Credit Unions Hit Record Lending Levels
ADHD Ireland Issues Social Media Warning
Laois Footballer Tackles First Dates Ireland