Custom backyard pool with stone patio and deck lighting at twilight in Cambridge Ontario
Bring your design to life

Custom Pools & Landscaping in Cambridge

From design to final stone — one team, clear communication, and quality you can stand on. Built for homeowners who want their backyard done right the first time.

No-obligation site survey Built by a handpicked team Design-first approach
10+
Years building outdoor spaces
200+
Completed backyard projects
5
Cities across Southern Ontario
0
Cost for your first site visit
Google Reviews

What our clients say

4.8· 47+ Google reviews
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Sarah Rochford's project
SR
Sarah Rochford
9 months ago

Diadem installed a back interlock patio with new stairs, side walkway, submerged a side downspout, fixed existing patio stones near the front created a nice ramp/walkway, installed sod and created a garden between the patio and fence. Our

Matthew McCullum's project
MM
Matthew McCullum
9 months ago

Deciding on who to work with for a significant pool and landscaping project is never without its risks. Will the project be completed on time and on budget? Will it exceed expectations? Will the process be smooth, and most importantly, fun?

Katrina Cober's project
KC
Katrina Cober
10 months ago

Tom and his team replaced our retaining wall, or what was left of it ( very old! ). From the start we felt comfortable with Tom and his vision of the final product. His team was hard working all day and clearly have a great working

About Diadem

A dream transformation for your outdoor space — without the headaches.

Diadem Landscapes is a hardscape and landscape design-and-build company in Ontario. We start every project with a no-obligation site survey, then sit down with you to plan a complete design that fits your budget and your yard.

From the first concept to the last stone, you stay in the loop. One crew, one point of contact, one finished result you'll actually want to spend your summers in.

Design-first

We plan the full space before a single shovel hits the ground.

One crew

The team that designs your space is the team that builds it.

Clear updates

You're kept informed at every step — no guesswork.

Built to last

Materials and methods chosen for Canadian seasons.

The Process

Our Simple 3 Step Process

Step 01

Tell Us About Your Project

Fill out our quick estimate form or give us a call. Share your project details so we can understand the scope of work and provide accurate pricing.

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Step 02

Get Your Free Quote

We'll visit your site, assess the conditions, and provide a detailed written estimate. No pressure, no hidden fees — just honest numbers.

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Step 03

We Get to Work

Once approved, our experienced crew mobilizes quickly. We show up on time, work efficiently, and leave the site clean when we're done.

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Where we work

Proudly serving Southern Ontario.

Custom backyard pool with interlock retaining wall and landscaping

Bring your design to life

Let's plan the backyard you actually want this summer.

Free, no-obligation site survey. Honest pricing. A plan you can stand behind.