# D.G. Biddle & Associates > A consulting engineering firm established in 1973, known for its commitment to integrity, sustainable design, and strong client relationships. D.G. Biddle & Associates offers a wide range of engineering services, including civil, structural, mechanical, and electrical engineering, as well as land use planning and field services. The firm operates primarily in Ontario and serves the Eastern Greater Toronto Area. ## Services - [Building Engineering](https://www.dgbiddle.com/building-design): Small and large building design under OBC Part 9 and Part 3. - [Mechanical Engineering](https://www.dgbiddle.com/mechanical-engineering): Design of mechanical systems including HVAC and plumbing. - [Electrical Engineering](https://www.dgbiddle.com/electrical-engineering): Electrotechnical design and consulting services. - [Structural Engineering](https://www.dgbiddle.com/structural-engineering): Design and analysis of structures for various sectors. - [Civil Engineering](https://www.dgbiddle.com/civil-engineering): Engineering services focused on land development and community design. - [Land Use Planning](https://www.dgbiddle.com/land-use-planning): Navigating approvals and planning processes for land development. - [Field Services](https://www.dgbiddle.com/field-services): On-site inspection and administration during construction. ## Projects - [What We Do](https://www.dgbiddle.com/revised-projects): Ontario land development engineering consultants reviewing site plan design. - [Subdivision Development](https://www.dgbiddle.com/subdivision-development): Subdivision concept plan and functional servicing report preparation. ## About - [About Us](https://www.dgbiddle.com/the-studio): Experienced engineering consultants collaborating on land development projects. - [Contact](https://www.dgbiddle.com/contact): Dedicated service to help turn dreams into plans, and plans into reality. ## Careers - [Careers](https://www.dgbiddle.com/careers): Join a team that impacts legacy projects and communities. ## Optional - [Home](https://www.dgbiddle.com/) - [New Partners and Associates](https://www.dgbiddle.com/new-partners-and-associates)