The board entered into a contract to purchase a 4.5 acres parcel of land at the corner of SE 15th and Reed Market Road.
Parks and Rec Executive Director Don Horton will allow them to expand the nearby senior center.
"The board has considered a concept plan that will include some remodeling of the fooptprint plan and make it more usable and add 32,000 feet. It will include a warm water therapy pool, a MAC gym which is a multi purpsoe gym that will allow all kinds of things like dances, basketball and large dinners."
The sale of bonds will start in June.
This is the board's second land purchase agreement for proejcts pledged in the November 2012 bond measure.
The expansion isn't expected to be completed for five years.