Founded in 1911, TW Perry has grown from one location to being the largest, full-service building materials dealer in the mid-Atlantic region. Today under the Builders FirstSource family umbrella; TW Perry is now part of the largest building supply organization in the country. TW Perry’s success is credited to establishing loyal customers who understand the added value and partnership our services and products bring their businesses. TW Perry’s specialty product divisions create a unique resource for their discerning clientele.