Multi-family and Retail Buildings require special attention to ensure your tenants enjoy living and working in your building.



It’s where we began. Mainland or Island we are equipped for it all.



Whether you’re looking for an investment property or a place you can entertain from, we can help turn your dream into a reality.


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Engineering & Design

Our Engineering and Design staff is there to help you with all your building needs.

Starting with due diligence during the purchase stage such as environmental site assessments (Phase I ESA) and building condition audits, continuing on to designing and finally to administering the construction, we have the skilled & licensed staff who can guide you through all stages.

We give our clients the solutions they need to build or renovate, ensuring that the final product will function as intended and meet standards such as the Ontario Building Code (OBC), Conservation Authority / Department of Fisheries and Oceans (DFO) rules, Municipal By-laws, Ministry of Natural Resource (MNR) regulations, Ministry of Environment (MOE) regulations, all the while mindful of each clients budget constraints. We can help you with:


  • feasibility studies, including costing and return of investment analysis for investment projects
  • environmental site assessments (Phase I ESA)
  • building condition surveys / reserve fund studies
  • site or structure condition reports


  • geotechnical / foundation designs
  • septic sytem designs
  • road and pavement designs
  • site plans
  • building design
  • building permit approvals


  • project management for construction

and much more

We also have an extensive network of skilled specialists who we turn to for their specific expertise. From surveyors to architects to interior designers, over the years we have worked with many specialists who we call upon as needed to supplement our in-house skills so we can truly give our clients complete turn key service.

Contact us today and we can help you review, evaluate and design your next project.

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The Gonneau Building Group is your choice for custom home construction! Whether you’re looking for a small get away, or a larger place you can entertain from, we can help turn your dream into a reality. Our team of highly skilled designers, carpenters and project managers will be there to help you every step of the way.

We believe in being completely honest and upfront in all of our customer interactions—when you choose us for your construction project, you can rest assured that we will give you both the good and bad news, minimizing surprises along the way.

At the Gonneau Building Group, we pride ourselves on our reputation. We have been in the business for more than 100 years, and you can count on us to fulfill your dream house or cottage. Contact us today for an estimate!

Sometimes you’ve got the perfect place, but the building isn’t quite large enough or needs to be updated. The Gonneau Building Group offers property renovation and addition construction services to home, cottage and business owners throughout the Simcoe County & Muskoka area. When you call us, you can feel confident that you’ll be getting access to the best and most reliable construction services in the region.

We will take care of your addition, renovation, or restoration project from start to finish, while always keeping your best interests in mind. Our team of qualified engineers & designers, project managers, site supervisors, and carpenters have the know-how to bring any project to completion.

Our experts will be with you through every step of the planning and construction processes. Give us a call today for an evaluation and estimate!

The Gonneau Building Group helps businesses throughout the Simcoe County & Muskoka area with all their property renovation and construction needs! We are fully licensed construction contractors who have been in the business for more than 100 years. In that time, we’ve developed a strong reputation for our fast, professional, and thorough services.

When you work with us, you’ll be guaranteed complete and thorough renovation and construction services. Our team will be with you through every step of the process—from initial planning to the end of construction.

At The Gonneau Building Group, we are committed to providing the best possible services to every customer. Give us a call today to find out what makes The Gonneau Building Group your best choice for commercial renovations and construction! Contact us today for a review and an estimate!

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Real Estate Investment Analysis

The Gonneau Building Group is routinely involved with various forms of multifamily and commercial investment real estate. We can assist by analyzing an existing property to determine its current value based upon its cash flow, status of deferred maintenance, etc. We can also assist investors in determining a properties potential future value by examining trends in the region/neighbourhood (economic, employment needs, upcoming developments, etc.) and by outlining various enhancements that could be made to reduce operating costs, increase rents and reduce tenant turnovers. We work with our customers to look for ways to reduce energy consumption and thus operating costs helping our customers to have technologically advanced, environmentally friendly structures that meet todays tenants expectations. When implemented these enhancements should increase net cash flow and/or appraised value. We also routinely complete feasibility studies for development projects including estimated construction/renovation costs as well as return on investment analysis.

Eric and his brother Mark are ‘gold and platinum pin’ members of the Real Estate Investment Network (REIN) and both have won multiple awards over the years including Top 10 Player (multiple), Player of the Year and Renovator of the Year. Given his extensive background, Eric is routinely asked to present to members of REIN and has given multiple presentations on topics such as: building code compliance, engineering due diligence, fire code compliance and property maintenance. Eric and his brother Mark were also featured in Don R. Campbell’s book “51 Success Stories from Canadian Real Estate Investors”; check out chapter 18.

Should you have a project in mind and you are looking for proven investment real estate expertise to guide you through the process, please contact us and we will review the opportunity in strict confidence.

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Real Estate Sales

Can you imagine what you want, but don’t have the property to build it on?

Do you have demanding requirements for your new building lot?

Over the years we have worked with and developed relations with multiple Realtors in various markets.

As part of our commitment to providing turn key services, The Gonneau Building Group often recommends Realtors to our clients to assist with finding their perfect building or lot – be it residential, commercial, or multifamily. We will work with the realtors and identify the ‘must have’ components versus those that can be modified. In addition, many of the Realtors we recommend know of properties not currently on the MLS system that may be just what you are looking for.

Contact us and we can recommend a Realtor who understands your unique requirements and the local market.

Real Estate Financing

In today’s market place Financing for a property, especially a vacation property or a lot to be developed can be challenging. The Gonneau Building Group has worked with numerous financial institutions, brokers and private lenders. As part of our commitment to ensuring you get a full package, we can often suggest the most appropriate source of financing for your project. Don’t let financing be the road block to your dreams.