We are the largest provider of commercial landscaping services in the United States, with revenues more than 10 times those of our next largest commercial landscaping competitor. We provide commercial landscaping services, ranging from landscape maintenance and enhancements to tree care and landscape development. We operate through a differentiated and integrated national service model which systematically delivers services at the local level by combining our network of over 220 branches with a qualified service partner network. Our branch delivery model underpins our position as a single-source end-to-end landscaping solution provider to our diverse customer base at the national, regional and local levels, which we believe represents a significant competitive advantage. We believe our commercial customer base understands the financial and reputational risk associated with inadequate landscape maintenance and considers our services to be essential and non-discretionary.
We operate through two segments: Maintenance Services and Development Services. Our maintenance services are primarily self-performed through our national branch network and are route-based in nature. Our development services are comprised of sophisticated design, coordination and installation of landscapes at some of the most recognizable corporate, athletic and university complexes and showcase highly visible work that is paramount to our customers' perception of our brand as a market leader.
As the number one player in the highly attractive and growing $70 billion commercial landscape maintenance and snow removal market, we believe our size and scale present several compelling value propositions for our customers, and allow us to offer a single-source landscaping services solution to a diverse group of commercial customers across all 50 U.S. states and Puerto Rico. We serve a broad range of end market verticals, including corporate and commercial properties, Homeowners Associations (HOAs), public parks, hotels and resorts, hospitals and other healthcare facilities, educational institutions, restaurants and retail, and golf courses, among others. We are also the Official Field Consultant for Major League Baseball. Our diverse customer base includes approximately 13,000 office parks and corporate campuses, 9,000 residential communities, and 450 educational institutions. We believe that due to our unmatched geographic scale and breadth of service offerings, we are the only commercial landscaping services provider able to service clients whose geographically disperse locations require a broad range of landscaping services delivered consistently and with high quality. Our top ten customers accounted for approximately 7% of our fiscal 2019 revenues, with no single customer accounting for more than 2% of our fiscal 2019 revenues.