NVblu, Inc. Pool Design-Build is the DC Metro Area's largest and finest swimming pool and outdoor living design-build firm. It specializes in the new construction and renovation of commercial and municipal swimming pools, water parks, and high-end residential swimming pools and spas. It has been recongized by Pool & Spa News magazine as beng in the Top Pool Builders in the U.S.A. (#14 overall), and is ranked by them as the #1 Pool Builder in the DC Metro area. Its specialties: Commerical and Municipal Swimming Pools, Residential Outdoor Living Areas and Swimming Pools/Waterfalls