TUSTIN, CALIF. — PI Properties No. 19 LP has acquired Tustin Business Center, a 44,948-square-foot office complex located at 17802-17842 Irvine Blvd. in Tustin, for $7 million. Built in 1972, the two-building, two-office complex is situated on two legal parcels totaling more than 2 acres. Michael Lawrence of Marcus & Millichap represented the seller, Tustin Business Center LP, in the transaction; Gregory Harris and Andrew Hodac, also of Marcus & Millichap, represented the buyer.