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Landscaping in Vaughan by Astonia Landscaping
GTA · Service Area

Landscape design & stone masonry in Vaughan.

Astonia Landscaping designs and builds high-end residential landscapes and natural-stone masonry across Vaughan, in the GTA. The work is led directly by James Dennison, a third-generation stonemason whose family has been building in stone since 1975. We run our own crews and our own equipment, haul every load of debris away in our own trucks, and stay in daily contact from the first site walk to the final planting — the same way we work everywhere we build.

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

Landscaping that belongs in Vaughan.

Vaughan sits in York Region and spans two very different kinds of property, and a serious landscape has to answer to both. In Kleinburg you find large estate lots with mature trees, real grade, and the older character of the Humber valley — land that rewards a measured plan and stonework that looks like it has always belonged there. We read the existing trees, the slope, and the way water already moves across the site before a single line is drawn, so the design works with the property rather than fighting it.

Much of the rest of Vaughan — through Thornhill, Woodbridge and the newer luxury enclaves — is newer construction on generous but blank, freshly graded lots. Homeowners here have built or bought the house they intend to keep, and they want the backyard finished to match it: one cohesive design rather than a patio this year and a pool the next. That suits how we work. Our designer measures the space in person and renders it in 3D so you can see the whole outdoor space before we break ground, and because we own our small and heavy equipment, the build runs on our schedule, not a subcontractor's.

What Vaughan homeowners tend to value most is restraint and permanence — natural stone, clean grading, and planting that grows into the property over the decades they plan to live there. This is usually a once-in-a-generation investment, and it is treated that way: $5 million in liability insurance, WSIB-covered crews, a Unilock Authorized Contractor, no unsightly bins left sitting in the driveway, and an owner who answers for the work himself.

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 Vaughan 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 Vaughan, 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 Vaughan 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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