Residential Development

We have successfully completed a multitude of projects, from large master planned residential communities, to industrial, commercial, and institutional developments, offering a full spectrum of planning and design services, resulting in an integrated system of roadways, grading, storm drainage, sanitary sewer, and water systems.  To date, our residential projects alone encompass an area of approximately 3,000 acres, and provide 22,600 dwelling units. 


Drainage, water, and sewer systems are integral components of our site development projects, as well as government projects, which specifically address needed infrastructure improvements.  Governmental projects include planning studies, engineering reports, and design services for drainage improvements, sewer improvements/rehabilitation, water and fire protection projects.  To date, we have designed over 285 miles of drain lines, water lines, and sewer lines.


We have extensive experience in the planning and design of site improvements for parking lots, recreational areas, schools, and government facilities, including compliance with ADA accessibility requirements.  Our work has involved repaving and restriping of parking lots, grading, and repair and/or upgrade of utilities, walkways, and lighting.

Comprehensive list of projects

Gray, Hong, Nojima & Associates, Inc.’s extensive project history has encompassed all aspects of engineering:  planning, permitting, design, modeling, construction observation and management, and project management.  Our comprehensive list of projects is available as a PDF.