Chief executive Richard Low has confirmed the club's owners, who took over in 2010 and funded back-to-back promotions, want to sell their majority stake.
He told the club's website: "Our owners have led this football club on a fantastic journey in the last three years and everyone associated with Crawley Town should be extremely proud to have played a part in what has been achieved so far.
"Crawley Town remain ambitious for its future. Our long-term strategy is focused on increasing our fan base, further improving the infrastructure, including the provision of new training-ground facilities, and producing a young, exciting team on the pitch capable of maintaining League One football and pushing upwards into the Championship.
"They recognise that for this to happen would require further substantial funding and believe that if the club is to continue to grow on and off the field the football club should actively seek new owners and investment.
"That process is under way, I have already been approached by an interested party and I am confident that we can find new investors who share the aspirations of everyone at Crawley Town and can continue the amazing journey we have been on.
"This is not a 'fire sale'. The current owners are still extremely committed to the club and will not be reducing their financial support until I find new ownership. In my opinion this club is an attractive proposition. We have no debt and a strong partnership with a supportive local authority that helps support the growth of the football club.
"We have attractive assets and a management team that are very capable and ambitious while our fan base is loyal and growing by the day. I do understand that any major change can create uncertainty but I believe the future is bright and I pledge to keep everyone in the Crawley Town family fully up to date as the projected sale."