de Koning Group - Civil, Structural & Architectural Engineering in Muskoka and Ontario

Based in Muskoka, Ontario, de Koning Group provides expert services to plan, design, and engineer residential, commercial, and waterfront projects across Ontario. Our team delivers professional civil engineering, structural engineering, and architectural design solutions tailored to each project’s unique site conditions and development goals.

Using advanced drafting and 3D rendering technology, we create practical, code-compliant, and build-ready designs. We specialize in custom projects of all sizes, from luxury homes, cottages, and boathouses to docks, garages, decks, and commercial developments.

To support projects from planning to construction, de Koning Group also provides Commissioner services for official project documentation and approvals, adding reliability and compliance to every step of the development process across Ontario.

Serving Muskoka, Simcoe County, the Greater Toronto Area, and beyond, de Koning Group is your trusted partner to plan, design, and engineer innovative, reliable, and precise projects from concept to completion.

PLAN

DESIGN

ENGINEER

PLAN • DESIGN • ENGINEER •

Meet the Principal

Nicholas de Koning, P.Eng - Principal

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Nick graduated from Western University where he obtained a Bachelor of Engineering Science in Civil-Structural Engineering as well as a Technological Entrepreneurship Certificate.  Nick has spent his entire career specialized in Structural Engineering and is a Licensed Professional Engineer in the Province of Ontario. Additionally, Nick graduated from the Ontario Real Estate College and is a Licensed Real Estate Broker. Raised in Muskoka, Nick’s local relationships, knowledge and experience are an asset to every project.  When not working he enjoys the many outdoor seasonal activities Muskoka has to offer.

Construction site of a multi-story building with scaffolding, wooden framing, and partially completed exterior walls, with an orange excavator on the ground and trees in the background.
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Structural Engineer

Griff Ferguson, P.Eng

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Structural Engineer

Mason White, P.Eng

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Structural Engineer

Tom Litchfield P.Eng

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Our Team

de Koning Group has a large diverse team of over 15+ highly qualified structural & architectural designers that is continuously expanding.

Meet the Admin Team

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  • Nick was very receptive when I first called him about our project and agreed to take us on as clients even though they were in a very busy period. He did not let us down! He assigned one of his very knowledgeable employees to work with us. Within a few days, Mason provided us with a first draft of the design, and continued to support us during the subsequent revisions and the construction, helpfully suggesting alternatives to simplify our build. Nick was always available to finalize, approve and seal drawings and reports when they were needed to meet our deadlines. His admin staff were also wonderful! Great experience!!!

    Mireille Lepage

  • We work closely with the amazing staff at the De Koning Group for all our steel dock construction projects. Nick and his staff are always available to answer questions and they provide amazing service in an extremely timely manner. We have nothing but great things to say about all the staff, everyone is a pleasure to work with.

    Tracey Brown

  • Efficient, clear concise drawings. Excellent to work with, don't hesitate to recommend.

    Josef Hanik

  • 5 STARS...Quick and professional. highly recommended!!

    Brandon Gilpin