Contact Us Decker Design LTD is the source in the greater NYC, NY area for top quality interior construction and project management services. Contact us for a free, no obligation estimate. Business Address: 451 West 48th Street Suite 5W New York, NY 10036 Call Now ! (212) 925-5205 Business Hours Mon-Fri 8:00am-5:00pm Find Us On: Your Name (required) Your Email (required) Subject Your Message Please leave this field empty.