Best landscape design & installation companies in Markham
These are the nine Markham contractors where landscape design and installation is the core business, not a side offering, ranked by our earned composite methodology built from verified review data.
Looking for the single best all-around landscaper in Markham, including companies that also handle maintenance and smaller jobs? See our best landscaper overall list. This page ranks only the specialists whose main business is designing and building outdoor spaces.
Picks are ranked by score and relevance to landscape design & installation, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | The One Interlocking & Landscaping | 86 | 5 (37) | — | Full-scope backyard builds |
| 2 | Sun Interlocking | 88 | 4.9 (68) | — | Fast turnaround without shortcuts |
| 3 | Terrastone Landscaping Inc. | 84 | 4.9 (60) | — | Driveway repairs & retaining walls |
| 4 | Avanti Landscaping | 80 | 4.6 (70) | — | Large pool & backyard-scale projects |
| 5 | RAMADA LANDSCAPING SERVICES | 66 | 4.2 (38) | — | Smaller sod, sprinkler & fence jobs |
1. The One Interlocking & Landscaping
5 (37 reviews)score 86/100
Chelsea's crew earns a perfect 5.0 across 37 reviews for interlocking, decks, and complete backyard overhauls, and it carries the top composite score on this list. Homeowners describe driveway extensions, pool installs, outdoor kitchens, and custom pergolas handled with clear communication and visible pride in the craft, often finished ahead of the quoted timeline. Several reviewers mention Chelsea personally following up on projects years later, which points to work built to last.
- Design consultation that gets material choice and layout right the first time
- Projects often finish faster than quoted
- Full site cleanup, no debris left behind
- Chelsea stays reachable for follow-up years after the job
Services: hardscaping interlocking, lawn care maintenance, landscape design installation, snow removal
2. Sun Interlocking
4.9 (68 reviews)score 88/100
Sun Interlocking posts the highest composite score in Markham on the strength of 68 reviews averaging 4.9 stars. William's crew is known for matching custom designs exactly, careful drainage and leveling work, and pricing reviewers call competitive against comparable GTA contractors. They're also flagged for fixing issues on-site at no charge, like damaged stones, rather than leaving it for a callback.
- Executes custom designs to exact specification
- Finishes ahead of schedule without cutting corners
- Competitive pricing for hardscaping quality
- Handles on-site fixes and debris removal without extra charge
Services: hardscaping interlocking, lawn care maintenance, landscape design installation, snow removal
3. Terrastone Landscaping Inc.
4.9 (60 reviews)score 84/100
Joe and the Terrastone team put together polished interlock and hardscaping work, backed by 60 reviews at a 4.9 average and a strong composite score. Jobs mostly land on time and on budget with honest estimates and clean sites, and reviewers single out Joe's personal involvement in design decisions.
- Skilled stonework with hands-on design input from the owner
- Punctual crews and clean job sites
- Honest, budget-conscious pricing
- Reliable on meeting stated timelines
Watch out: A few reviewers describe slower responses when follow-up issues came up after the job, so it's worth confirming what post-install support looks like before signing.
Services: irrigation lighting, hardscaping interlocking, lawn care maintenance, landscape design installation
4. Avanti Landscaping
4.6 (70 reviews)score 80/100
Avanti has the deepest review base on this list at 70 reviews (4.6 average), built on interlock driveways, patios, and full backyard redesigns that scale up to pools and decking. Named crew members like Corey, Eduard, Derrick, and Tom get repeat praise for explaining choices on-site, such as using polymer sand for weed prevention, and for reusing existing materials to save clients money.
- Scales from front steps to full pool-backyard redesigns
- Named crew known for patience and clear explanations
- Transparent, upfront contract pricing
- Reuses existing materials where it saves the client money
Watch out: One recent project reportedly went badly on the design and permitting side with slow follow-up on a refund, a sharp outlier against an otherwise strong track record worth asking about directly.
Services: lawn care maintenance, irrigation lighting, licensed insured, hardscaping interlocking
5. RAMADA LANDSCAPING SERVICES
4.2 (38 reviews)score 66/100
Ramada handles sod, sprinkler installs, hardscaping, and fence work with crews reviewers call punctual and detail-oriented, often finishing the same day. Most of the 38 reviews are positive on communication and tidy work, though the 4.2 average reflects a mixed record rather than the near-perfect scores seen elsewhere on this list.
- Same-day completion on many smaller projects
- Frequent, clear updates during the job
- Attention to detail noted by most reviewers
- Affordable pricing on standard jobs
Watch out: One reviewer describes a $50,000 hardscaping project that settled unevenly and went unrepaired for 18 months, plus a $3,000 deposit never returned. Get everything in writing and ask about their warranty process before committing to a large scope.
Services: irrigation lighting, lawn care maintenance, landscape design installation, snow removal