NSA Construction Group, Inc. (NSA) is a licensed general contracting firm founded in 1995, servicing a broad spectrum of clients from our Los Angeles area office located in Tarzana, California. We are a full service bondable general contractor specializing in public and private work projects. Our wide network of construction industry experts, depth of knowledge, exceptional customer service and dedicated, local teams allow us to offer unsurpassed reconstruction, construction, and post-construction services for some of the most complex projects in California.