Share your wish list and our staff can discuss additional options to your plans, such as electrical or water, manure handling, ventilation, and floor covering. Because of our reputation, we have completed numerous barn jobs in the northeast states. A journey with horse barn building will take you so much farther than a mere walk at Washington Park. Atlantic Outdoors is the premier horse barn builder in Secaucus, NJ. The actual size of a small horse barn depends on the number of horses you have and how you want to care for them.