Irvine Office Space for rent & Executive Office Suites in Centerstone Plaza on Barranca Parkway Irvine CA 92604. This Irvine business center offers flexible terms for obtaining instant furnished office space and the ability to expand or downsize your business on short notice, giving your business flexibility not available with conventional office office. Other important features include: high-speed Internet access, word processing, furniture, a waiting lobby, multiple virtual office plans and, of course, office space.Located in the heart of Irvine, Centerstone Plaza is conveniently at the intersection of Culver Dr. and Barranca Pkwy. between the 405 and I-5 Freeways. The Plaza includes Mimi’s Café and Islands restaurants, and is across from the Crossroads Shopping Plaza.