Licenses Licenses and License Numbers NSLGA - Nassau Suffolk Landscape Gardeners Association NYS DEC (Department of Environmental Conservation) Pesticide Business Registration - #11055 National Concrete Masonry Association Certified NYS DEC (Department of Environmental Conservation) Pesticide Business Registration - #11055 Interlocking Concrete Pavement Institute Certified | CNLP - Certified Nursery Landscape Professional Suffolk County Home Improvement Contractors License - #24626-HI Nassau County Home Improvement Contractors License - #H2080590000 NYSNLA - New York State Nursery Landscape Association, Inc. NYSTA - New York State Turf Association NY State Turf & Landscape Association ANLA - American Nursery Landscape Association Southampton License #L005060