Service area · Barrhaven, ON
Interlock and yard drainage in Barrhaven
Korvex builds interlock patios, drainage, fences and decks across Barrhaven. The ground is part of the Ottawa Valley clay plain, with clay roughly 8 to 10 m deep along the Jock River. Clay drains slowly, so on a flat lot every post, footing and patio base starts with getting water off the yard.
Barrhaven began in the 1960s south of the Greenbelt and had grown to about 103,000 people by 2021. The Rideau River forms its eastern edge and the Jock River runs through its south, with communities from Old Barrhaven and Longfields to Stonebridge and, south of the river, Half Moon Bay.
What we plan around in Barrhaven
The ground, the lots and the local rules
Each point links to the public source it was checked against. At the site visit we check how it applies to your lot.
- Deep clay plain
Along the Jock River the clay layer runs about 8 to 10 m deep over limestone and dolostone. Base thickness, compaction and slope are set for that soil.
What it changesinterlock, retaining walls, backyard renovations
- Jock River floodplain
The Jock River through south Barrhaven has a mapped 100-year floodplain, and part of it north of the river was cut and filled in 2019–2020 for a new subdivision.
What it changesdrainage & grading, retaining walls, exterior waterproofing
- First streets and new phases
The first subdivision houses along Larkin Drive date to the late 1960s and early 1970s, while Half Moon Bay is one of the newer areas. Older yards come with existing structures to remove, newer ones with a recent grading plan to follow.
What it changesfences, decks, backyard renovations, fence repair, deck repair
Backyards on Barrhaven townhouse lots
Narrow yards, one way in
Korvex Construction builds complete backyards in Barrhaven: interlock patios, decks, fences, drainage and low retaining walls planned together, from Old Barrhaven and Longfields to Chapman Mills and Half Moon Bay. The site visit and the estimate are free, and you receive the scope and the price in writing once we have seen the yard. Our number for calls, texts and WhatsApp is 613-880-7679.
Most Barrhaven streets are lined with town houses, with larger suburban houses on some. A townhouse backyard is narrow, and where the units are joined, the way in can be through the garage or the house. Soil, base stone and pavers then move in small loads, and the route is measured at the site visit because it shapes the order of the whole job.
Water needs a plan on a narrow lot as well. The City asks that downspouts never discharge onto a neighbour’s property, a sidewalk or an easement, and where space is tight, that the water goes to the lot’s intended drainage point. A patio between two neighbours is sloped toward that point.
Clay in Barrhaven’s history and in its yards
What slow drainage means for walls and patios
In 1977 the Regional Municipality of Ottawa-Carleton approved Barrhaven’s expansion in place of development planned for Carlsbad Springs, where Leda clay in the soil had raised concerns. Barrhaven itself sits on clay too, deep along the Jock River, and clay drains slowly.
For a garden wall, slow drainage means water stays in the soil behind the block, gets heavy and pushes harder when it freezes. That is why the wall we quote has room dug out behind it for drainage stone, a pipe to carry the water away, and a first course set partly below grade on a compacted, level base. Under a patio, the base is compacted in lifts and the surface sloped so water leaves before it can soak into the clay below.
Golf course lots and the river edges
Stonebridge, Half Moon Bay and the Jock River
Stonebridge sits beside the Stonebridge Golf & Country Club, and Half Moon Bay lies south of the Jock River along Cambrian Road. The Rideau Valley Conservation Authority regulates the 1:100-year flood plain, valley slopes and every watercourse in its watershed, whatever its upstream drainage area, so a small creek or drain behind a lot counts too. Its Map a Property tool shows mapped hazards for an address, and we check it before planning a wall, a patio or regrading near the water.
What we build in Barrhaven
Services in Barrhaven
Every job starts with the same site review: soil, slope and where the water goes.
Reviews
Ottawa homeowners, in their own words
Quoted exactly as posted on Google, HomeStars and Facebook, with the job each one describes. Stars show where the platform gives them. All 26 reviews
- Google
5.0
14 reviews on the Google profile · Open on Google
- HomeStars
Each shows five stars
- Facebook
Recommended
Facebook shows no stars · Open on Facebook
Patio installed
“Vlad and his crew installed my patio in 2 days. Did excellent work and vlad answered any and all questions I asked. I highly recommend Korvex Development for any job you may require.”
Joe Ayoub
Google · Aug 2026Wood fence repair · Ottawa
“Vlad and his partner did a terrific job repairing our sagging wood fence, giving it a new life, for a very reasonable price. They communicated clearly and professionally at every stage of the process, they completed the job in a timely manner, and their work was top notch. Highly recommended!”
Geoffrey Robinson
HomeStars · Jun 2026French drain after a basement leak
“Vlad and his coworkers are very hard working and professional with a realistic and fair pricing that cant beat any other company out there ! We just had a major leak in our basement and they efficiently waterproofed the foundation and created a french drain with outstanding finish of layering gravel and pavement reconstruction. They are the people to call for almost any kind of work on your house !! Thank you guys God Bless & Respekt!”
Gio Ivana Herrera
Facebook · Aug 2026
Can you fit a deck and a patio into a narrow Barrhaven townhouse yard?
Yes. In a narrow yard a low deck off the patio door can step down to an interlock or slab patio, with the fence and the downspout planned at the same time. Each part is sized for the width you have, and we check whether the deck needs a permit before work starts.
How do materials get into a townhouse backyard with no side path?
Through the garage or another route we agree on with you at the site visit, in loads small enough for that route. The route goes into the written scope, so you know before work starts how the yard will be reached.
Will a low garden wall hold up on Barrhaven clay?
It can, when water has a way out. Walls lean when wet soil behind them freezes and pushes, and clay holds water. A compacted base, drainage stone and pipe behind the block, and ground above the wall shaped to carry runoff around it are what keep a wall in line.
Do you work in all parts of Barrhaven?
Yes. Korvex Construction builds interlock, drainage, fences and decks across Barrhaven, including Old Barrhaven, Longfields, Chapman Mills, Stonebridge and Half Moon Bay. One of our Barrhaven jobs is on this page: a front garden bed rebuilt with landscape fabric, mulch and a clean paver edge. Request a free estimate or call 613-880-7679.
My backyard is near the Jock River. Do I need extra approval?
Possibly. On regulated land along the Jock River, grading, fill and structures can need a Rideau Valley Conservation Authority permit on top of City of Ottawa rules. Its online map shows whether a lot is regulated, and we check what applies to yours before planning the work.
Why does water sit on my lawn after rain?
Barrhaven sits on clay, which drains slowly, and a yard that has lost its slope holds water near the surface. City of Ottawa guidance asks residents to call 3-1-1 if water is still there after 48 hours. We look at slope, swales and downspouts and check what applies to your property before proposing a fix.
Are your estimates free?
Yes. Korvex Construction gives free estimates on site across Ottawa and the surrounding areas. Send the request form, or call, text or WhatsApp 613-880-7679, and we book a time to look at the property. The scope and the price follow in writing after the visit.
What should I send with my request?
A few photos of the area, close up and from a few steps back, where the property is, and a sentence on what you want done. That is enough for Korvex to set up the site visit. Measurements, material choices and budget can wait for the visit.
Can the final price go over the estimate?
Ontario’s consumer rules for home renovations set a limit. When a contractor gives an estimate, the final price cannot be more than 10% over it unless you agree to new work or a new price. The rule covers every home renovation contract in Ontario.
Planning a project in Barrhaven? The estimate is free, on site.
Tell us what you want built and send a few photos. We come out, look at what sits under the job, and give you the scope and the price in writing.