Custom landscaping and pool projects in Guelph, Ontario
Serving Guelph, Ontario

Custom pools & landscaping in Guelph.

From stone-rich Old University and St. George's Park yards to newer Westminster Woods and Pineridge backyards, we design and install pools, hardscape and landscape across Guelph as one coordinated project.

Google Reviews

What our clients say

4.8· 47+ Google reviews
Read all reviews
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

12+
Years building locally
300+
Backyards transformed
4.9★
Average homeowner rating
100%
In-house crews

Why local matters

We know how Guelph yards are built.

Every neighbourhood in Guelph brings its own grade, soil and access quirks. We've worked through all of them — so the quote you get is the one you pay.

Familiar with City of Guelph permits for decks, pool enclosures and engineered walls.

Experience working Guelph's natural stone and limestone aesthetic into design.

Comfortable working mature treed lots common in older Guelph neighbourhoods.

Local crews mean fast response and consistent on-site supervision.

Recent Guelph projects

Work we've completed nearby.

Stone-wrapped pool build in Westminster Woods, Guelph
Westminster Woods

Stone-wrapped pool build

Pool surrounded by natural stone coping and a quartzite patio that fits Guelph's character.

Limestone retaining wall in St. George's Park, Guelph
St. George's Park

Limestone retaining wall

Hand-laid limestone wall to terrace a steep front yard on a mature treed lot.

Front walkway & steps in Exhibition Park, Guelph
Exhibition Park

Front walkway & steps

Natural stone steps and a curved walkway leading to a restored century home.

Neighbourhoods we serve

Across Guelph and surrounding areas.

Old UniversitySt. George's ParkExhibition ParkSunny AcresWestminster WoodsPineridgeKortright HillsGrange Hill East

Our Guelph promise

What every project includes.

On-time scheduling

Clear start date, clear finish date — written into the contract.

In-house crews

No subcontracted patchwork. The crew that quotes is the crew that builds.

Workmanship warranty

Standing behind every base, post and paver we install in your yard.

Local references

Real completed projects in Guelph we can point you to.

Guelph FAQs

Questions from Guelph homeowners.

Do you work with natural stone?+

Yes — natural stone walls, coping and walkways are a regular part of our Guelph projects, often blending with existing limestone features.

How do you handle Guelph's mature lots?+

We plan around root zones, restore disturbed areas, and use small-footprint machinery when access requires it.

Do you pull City of Guelph permits?+

Yes. Pool enclosures, engineered retaining walls and deck permits are all handled as part of the project.

Can you design as well as build?+

Yes — every project starts with a design pass so you see materials, layout and finishes before we break ground.

Guelph homeowners

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

Free, no-obligation site survey anywhere in Guelph and surrounding areas.