Westchester County Builders . We run all our projects from start to finish, handling all trades that are required for the job. We pride ourselves on our detailed custom carpentry work. New Construction Homes & Plans in Westchester County, NY 362 Homes from www.newhomesource.com Cut through the red tape with government forms and. Trusted since 1967, toll brothers, the nation's leading builder of luxury homes, embraces an unwavering commitment to quality and customer service. We invite you to call for a free design consultation.