Sales Office A private investor has purchased the Brownstone Office Condominiums, a five-building property totaling 20,000 square feet on 5.4 acres at 16110 Kuykendahl. Larry Vickers with Tarantino Properties represented the seller, PlainsCapital Bank. Boxer Property has acquired Aerospace Plaza, a two-building office property in the Clear Lake area. The buildings at 2400 and 2450 NASA Parkway total 160,080 square feet and are connected by a sky bridge.