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Landscaping in Clarington by Astonia Landscaping
Durham · Service Area

Landscape design & stone masonry in Clarington.

Clarington is home. Our yard sits in Hampton, so the crews working on a property in Bowmanville, Courtice or Newcastle are often only a few concession roads from where the trucks are parked. For five decades, owner-led by a third-generation stonemason, Astonia has designed and built natural-stone landscapes across the municipality we live in — patios, walls, water features and full grounds, with every load of debris hauled away in our own trucks.

  • Since 1975
  • 3 Generations
  • $5M Insured
  • WSIB Covered
  • Unilock Authorized
In Clarington

Landscaping that belongs in Clarington.

Clarington is unusually varied for one municipality, and the right approach changes street to street. Bowmanville's older core and the established lots around it come with mature trees, settled grades and a heritage character that a new landscape has to respect rather than overwrite — stone that looks like it has always belonged beside a century home. Courtice leans newer, with larger estate lots on the western edge where there is room to plan a full sequence of patio, planting and gathering space. Newcastle keeps its village feel, and homeowners there tend to want work that reads as part of the neighbourhood, not imposed on it.

Beyond the towns, much of Clarington is rural-edge — acreage, long approaches and properties that roll toward the Oak Ridges Moraine and the Ganaraska. On that kind of land, grade and drainage are the real design problem before a single stone is set: how water moves across a slope, how a terrace steps down to a lawn, how a driveway and entrance hold up through Durham winters. Owning our own small and heavy equipment matters most here, where access is tight, distances are long and a subcontractor's schedule would otherwise dictate the pace of the build.

Homeowners in Clarington are generally making a long-term decision on a property they intend to keep. They value steady, direct communication, crews that are insured and WSIB-covered, and a clean site — no rental bins sitting at the end of a country driveway for weeks. As a Unilock Authorized Contractor working in our own home municipality, we are close enough to stay genuinely hands-on from the first walk of the land through the final planting.

How it works

From first handshake to final reveal.

01

Initial Consultation

We meet you on-site to walk the space, understand how you want to live in it, and talk through your vision and investment — no obligation.

02

Design & 3D Review

Our designer measures and plans your space, then renders it in 3D so you can see it before we break ground. We refine every detail together.

03

Breaking Ground

Our own crews and equipment start at 7:00 AM, keep the site clean every day, and brief you each morning and evening — no subcontractor gaps, no bins.

04

Project Completion

After a final walkthrough, the only thing left behind is your finished space — built to gather on for generations.

The Astonia difference

Why homeowners in Clarington choose us.

Owner-led

Daily communication from James, from the first handshake to the final reveal.

Our own equipment

Small and heavy machines, run by our own crews — no subcontractor delays.

No unsightly bins

We haul every bit of debris away in our own trucks, every day.

$5M insured

Liability coverage above the industry average, for your peace of mind.

WSIB covered

A fully covered, professional crew on every project.

Unilock Authorized

Warranty-grade materials and professional installation standards.

Kind Words

Homeowners across the GTA, on the Astonia experience.

Five decades of referrals across the GTA & Durham — and a Unilock Authorized Contractor. Read more on Google & Houzz.

"Working with James was great from the beginning. He put my mind at ease with his product knowledge and his creative designs."

AmandaToronto · Verified

"The natural stone work and landscape job that James and his crew did is beautiful, outstanding work. The quality is outstanding — we would recommend this company to anyone."

Mike & AntoinetteBrampton · Verified

"Astonia was a delight from start to finish. The crew showed up early and worked long days to finish on time. We are now enjoying the most amazing front yard. Outstanding results!"

JonusesToronto · Verified

"As a repeat client, we selected Astonia to transform our simple backyard into a relaxing space amongst a natural setting that will bring us many years of pleasure."

DavidMississauga · Verified
Good to know

Landscaping in Clarington, answered.

We design and build across the GTA & Durham region — including Toronto, Etobicoke, Mississauga, Brampton, Oakville, Vaughan, Markham, Newmarket, Aurora, King City, Whitby, Oshawa, Bowmanville and the surrounding areas.

Every project is different — from focused stonework to a full landscape transformation — so we provide a clear, detailed proposal after an on-site consultation rather than a generic price. Most of our work is a meaningful, lasting investment in your property.

Timelines depend on scope, and you receive a realistic one at the design-review stage before we break ground. Because we own our equipment and run our own crews, we work efficiently — starting at 7:00 AM and keeping the site clean every day.

Yes. We carry $5 million in liability insurance — above the industry average — our crews are fully WSIB covered, and we are a Unilock Authorized Contractor.

Yes. Our designer visits your home to measure and plan the space, then renders your project in 3D so you can see it before any work begins. We review and refine it together until it is right.

No unsightly bins on your driveway — we haul everything away in our own trucks and leave a tidy site every day.

Astonia is led by James Dennison, a third-generation stonemason with five decades of craft. You get the expertise of a large company with the warmth and accountability of a family business, owner-led from start to finish.

Nearby

We also build in your neighbours' yards.

Your Clarington project starts here.

Book a free on-site consultation. We design, build and plant the whole space — then haul it all away when the last stone is set.

$5M insured · WSIB-covered crews · 3rd-generation craftsmanship since 1975

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