Castleford have been given the green light to build their new stadium, which they hope to be playing in by 2010.
The Tigers' long-term future hinged on receiving planning permission for a 15,000 capacity stadium on the site of an old colliery.
It is expected to cost around £15m and will be part of a £40m development.
Chief executive Richard Wright said: "This is a massive step forward in making the Tigers dream of a 21st-century stadium become reality."
He added: "We can now progress with confidence because whilst awaiting this news we have been moving ahead in tandem on the finances and again are confident of everything being in place.
"As a result, we expect work to start soon with the aim of moving into the new stadium by 2010 at the latest, although we haven't as yet ruled out 2009."
Clubs applying for a three-year licence for a proposed 14-team Super League from 2009 must meet strict criteria, including stadium and facilities, and the Tigers believe the news about the stadium will virtually guarantee their inclusion.
Wright said: "This could prove one of the most significant days in the club's history.
"We will now be moving full steam ahead to reach our objective of becoming one of the leading players in Super League, operating out of a high-quality stadium."