Incorporated in 1989, D. B. Gray Engineering Inc. holds a Certificate of Authorization issued by the Association of Professional Engineers of Ontario and provides services in the field of civil engineering.


Douglas B. Gray, P.Eng., the principal and senior engineer, has over 35 year of experience and, as with all our staff, takes pride in consistently meeting the schedule and goals of our clients. 

We have the experience and capabilities to develop cost effective designs that meet or exceed our clients’ requirements, and we obtain municipal and provincial approvals in a timely manner.   We strive to achieve and maintain a high level of quality of design and presentation.  We take pride in consistently meeting the schedule, requirements and budget of our clients. Regular meetings and correspondence with the client, other consultants and municipal staff  ensures a functional and economical design. 

Our services include the preparation of the following documents for municipal and/or provincial approval: Site Servicing Plan, Grading Plan, Composite Utility Plan, Erosion and Sediment Control Plan, Assessment of Adequacy of Public Services / Site Servicing Report, Stormwater Management Report, and Hydraulic Watermain Analysis. 

We are knowledgeable in contract administration and review services during construction.  We perform site inspections, followed by written Site Inspection Reports, to ensure compliance with the design. We have the capabilities and are available to quickly assist in the resolution of construction difficulties.  


As a project nears completion prepare as-built drawings and Compliance Certificates as is often required by the municipality.  If required we conduct sewer dye tests and review CCTV sewer Inspection reports and videos.




Below you'll find some of the residential, commercial, industrial, institutional/non-profit, and government projects we've worked on.




D. B. Gray Engineering Inc.

700 Long Point Circle

Ottawa, Ontario K1T 4E9

Tel: 613-425-8044

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