LOUISVILLE - ConocoPhillips Co. has purchased another two properties just north of its new 432-acre campus in Louisville to improve access.

The Houston-based energy company purchased 9355 and 9255 Paradise Lane for $2.64 million and $1.6 million respectively, according to Boulder County public records.

Marlyn and Elmer Crider sold the 19.1-acre 9355 Paradise Lane property and Martha and Lanny Helms sold the 9.6-acre 9255 Paradise Lane property to ConocoPhillips.

ConocoPhillips had been negotiating with landowners in the area to acquire property for future transportation improvements and improved access to its campus.  In May, the company purchased the 9.5-acre 9450 Paradise Lane property for $2 million.  And in February it purchased the 9.1-acre property at 9550 Paradise Drive for $1,055,500.

The properties sit northwest of 96th Street and the Northwest Parkway.

ConocoPhillips purchased its 432-acre campus in Louisville from Sun Microsystems Inc. in early 2008 for $58.6 million. The company plans to open its first buildings in 2013.