Built to spec
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Underground Stormwater Systems are buried detention and infiltration systems that store and manage runoff beneath a site. Harrowgate Group self-performs the work to your engineered drawings, load, and finish, and completes it on site across Ottawa, the GTA, and Ontario.
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Heavy-duty steel and finishes chosen for the load, traffic, and environment on site.
Send specs, drawings, or photos and get a free, no-obligation site visit and estimate with no guesswork.
Installation and site work completed in accordance with Ontario requirements.
Underground Stormwater Systems are buried detention and infiltration systems that store and manage runoff beneath a site. For Ottawa projects, Harrowgate Group builds underground stormwater systems from survey to sign-off: laid out to the drawings, constructed to code, and documented for the project file.
Ottawa underground stormwater systems work centres on sites with limited surface space. Managing stormwater underground where surface space is tight are the recurring drivers; each Ottawa project is sized to its own situation, not a one-size approach.
Ottawa's need for underground stormwater systems (City of Ottawa) is driven largely by government and institutional, technology and commercial, healthcare, and infrastructure and transit. Ottawa's federal government, technology sector, and transit expansion anchor one of Ontario's largest institutional and civil construction markets. Work spans government and institutional site development, transit civil, servicing, and concrete.
The work concentrates around the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors. Harrowgate Group regularly builds underground stormwater systems for Ottawa clients like the federal government, tech firms, hospitals, and the City of Ottawa, each project carrying its own site and requirements.
The mix in Ottawa, government and institutional, technology and commercial, healthcare, and infrastructure and transit, means each underground stormwater systems project starts from the specific structure, not a template, when Harrowgate Group scopes it.
What shapes an Ottawa project is government and security site standards, LRT and transit infrastructure, and cold-climate frost design. So Harrowgate Group matches the methods, materials, and equipment to the site, and an Ottawa project rarely needs the same approach as a standard property.
In Ottawa, Harrowgate Group treats schedule as part of the scope: fast mobilization, the right equipment on site, and the project built in the right sequence so the following trades are not held up.
Every Ottawa underground stormwater systems project follows a disciplined sequence: site survey and layout, utility locates and protection, excavation or preparation, the core work built to the engineered drawings, backfill and compaction or finishing to grade, and site restoration, each stage inspected and documented for the project file.
The right Ottawa underground stormwater systems outcome depends on the right people at the table. Harrowgate Group builds to the structural and civil engineers' spec, respects the architect's intent, coordinates surveyors and consultants, and works with municipal planning and inspection, carrying the Ottawa project from stamped drawings through to a documented, approved result.
A typical Ottawa underground stormwater systems project pairs the work with local conditions: sites with limited surface space around the downtown government core and clients like the federal government. Harrowgate Group tailors each project to the situation and documents it for the file. Harrowgate Group also serves nearby Kanata, Gatineau, Kemptville, so projects spanning the surrounding area stay with one team.
Each Ottawa project is completed to its engineered spec, methods, materials, and load or compaction results set to the site and recorded, so what is built matches what was designed and approved.
Across Ottawa, owners call Harrowgate Group for underground stormwater systems for a simple reason: licensed, insured, and fully WSIB-covered work, fast mobilization, and a crew that actually knows the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors and how local buildings fail.
Self-performed on site to the engineered drawings, coordinated with concrete, servicing, and the surrounding work, then a clean, documented finish.
The short version: Underground Stormwater Systems are buried detention and infiltration systems that store and manage runoff beneath a site. For Ottawa projects, it's built to the engineered drawings and the applicable codes, self-performed on site.
Yes, we respond across Ottawa and the surrounding area. Response time is fast mobilization.
Across Ottawa, the work concentrates around the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors, each job scoped to its own conditions.
Mostly government and institutional, technology and commercial, healthcare, and infrastructure and transit, Harrowgate Group serves developers, contractors, municipalities, and property owners across Ottawa.
In Ottawa, the work accounts for government and security site standards, LRT and transit infrastructure, and cold-climate frost design, so the methods, materials, and equipment is matched to the site.
Stormwater storage, matched to the Ottawa site, not a one-size approach.
Harrowgate Group responds to Ottawa with fast mobilization, covering the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors and the surrounding area.
All of Ottawa, the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors and the surrounding neighbourhoods, plus nearby Kanata, Gatineau, Kemptville.
Yes, Harrowgate Group handles government and institutional, technology and commercial, healthcare, and infrastructure and transit across Ottawa, from focused scopes to full builds, each set to its own site and drawings.
Cost depends on the site conditions, the ground, the scope, and the engineered requirements, Harrowgate Group reviews the drawings and the site for each Ottawa project and provides a clear, documented quote.
Yes, Harrowgate Group assesses Ottawa underground stormwater systems on site and provides a documented scope before any work begins.
Real knowledge of Ottawa, the downtown government core, the Kanata technology park, the industrial and business parks, and the LRT corridors, fast mobilization, work that is licensed, insured, and fully WSIB-covered, and full documentation on every project.
Harrowgate Group has served City of Ottawa since 2006, 20 years of hands-on experience.
Harrowgate Group surveys and scopes it on site, builds the work to the engineered drawings and the applicable codes, and completes it to grade, handled by one accountable team across Ottawa.
Yes, Harrowgate Group builds the work across Ottawa and the surrounding area and manages it end to end, coordinating any engineers, consultants, and municipal approvals the project needs. We do the work, not just hand it off.
Commercial and heavy-civil construction, self-performed for developers, contractors, property managers, and municipalities.
Send drawings, a site plan, or a description of the scope. Harrowgate Group is licensed, insured, and WSIB certified.
Licensed, Insured & WSIB Certified · Self-performed and documented on every job
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Harrowgate Group provides underground stormwater systems, delivered and installed with quote-ready support across Toronto and surrounding Ontario communities.
Companies We've Worked With
Harrowgate Group delivers commercial and heavy-civil construction for developers, contractors, institutions, municipalities, and property groups across Ontario.