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Grassmere Construction Ltd. is a Design-Build, Construction Management firm based in Tillsonburg, Ontario. We specialize in Industrial, Commercial, and Institutional building projects. From new facilities, major renovations, and metal reroofs throughout Southwestern Ontario. With over 30 years of experience, our team is dedicated to delivering successful projects. We are a Butler Builder, a worldwide leader in Pre-Engineered Metal Building Systems. Our team is committed to providing exceptional services to our clients, with a focus on customer satisfaction and quality construction.