Interlock Installation Orleans | Front Entrances & Backyards

We specialize in front entrances, driveways, patios, walkways, retaining walls, and decks — all built with precision, clean design, and long-lasting quality.

5-Star Rated Interlock & Landscaping Company

Welcome to HARMERSTONE!

We are a Techo-Pro Certified interlock and landscape company dedicated to building outdoor spaces that are both beautiful and built to last.

With over 20 years of industry experience, our team specializes in precision-driven hardscaping — including driveways, walkways, patios, custom decks, and complete landscape transformations. Every project is constructed with proper base preparation, structural integrity, and long-term durability in mind.

At HARMERSTONE, we don’t just improve curb appeal — we create outdoor environments designed to withstand Ottawa’s seasons while enhancing the value of your home.

Professional. Experienced. Skilled.

– Mathew Harmer, Owner

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About

Meet Mathew & Ashlee

Mathew & Ashlee Harmer are more than just business partners — they’re a family team.

Mathew leads the fieldwork with precision and passion, drawing on decades of industry experience and a reputation for meticulous craftsmanship. Ashlee manages operations, client communications, and marketing, ensuring every project runs smoothly and professionally from start to finish.

When they’re not building stunning outdoor spaces, they’re raising their three energetic boys — coaching football, cheering on the sidelines, and staying active. Their family-first mindset shows up in everything they do: thoughtful planning, strong work ethic, and a genuine desire to make people feel at home.