FORMER WESTHEIMER PLANT HOUSE GOING STEAK The building at 224 Westheimer Rd. in Montrose, on the north side of the street between Helena and Mason St., was long ago home to Bistro 224. Then it became the Plant House. A photo sent in by a reader late last week shows the same structure undergoing another metamorphosis as it transforms into its newest incarnation, a return to its food-serving days. According to building permits taken out for the property, the revamped building will become the Bistecca Steak House once construction is complete. Photo: Sylvia Drew