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 North York, 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. Harrowgate Group builds underground stormwater systems across North York to the engineered drawings and the applicable codes, surveyed, built on site, and completed to grade for the real conditions.
In North York, underground stormwater systems are typically needed for sites with limited surface space. Managing stormwater underground where surface space is tight are the recurring drivers; each North York project is sized to its own situation, not a one-size approach.
In North York (City of Toronto), underground stormwater systems demand is driven mainly by commercial and office development, institutional and healthcare, transit-oriented development, and industrial lands. North York's Yonge-Sheppard and Consumers Road centres drive office, institutional, and transit-oriented commercial construction, with the Downsview lands opening major new development. Demand favours mid-rise and institutional site work along the subway and 401 corridors.
The work concentrates around the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor. Much of the North York work is for developers, office and institutional owners, hospitals, and the City of Toronto, each needing the job built to the drawings, to code, and documented.
North York property spans the full range, commercial and office development, institutional and healthcare, transit-oriented development, and industrial lands, and underground stormwater systems looks different on each. Harrowgate Group sets the approach to the building type on every North York project.
North York conditions shape the response: transit-corridor density, aging commercial stock needing retrofit, and servicing around active subway and 401 infrastructure. So Harrowgate Group matches the methods, materials, and equipment to the site, and a North York project rarely needs the same approach as a standard property.
Programs slip when trades do not show. Harrowgate Group builds the North York underground stormwater systems work itself, so mobilization, sequencing, and completion stay with one accountable team, with fast mobilization to get moving.
Harrowgate Group scopes each North York project on site, builds the work to the load and the plan, and verifies the finished project, a controlled process from survey through to a documented sign-off.
The right North York 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 North York project from stamped drawings through to a documented, approved result.
On a typical North York project the underground stormwater systems work covers sites with limited surface space around the Yonge and Sheppard centres and clients like developers, each scoped to its own situation and recorded for the file. Harrowgate Group also serves nearby Toronto, Vaughan, Markham, so projects spanning the surrounding area stay with one team.
Each North York 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.
What keeps Harrowgate Group busy with North York underground stormwater systems: fast fast mobilization, licensed, insured, and fully WSIB-covered work, full documentation, and a team, with 20 years serving the area that knows the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor firsthand.
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 North York projects, it's built to the engineered drawings and the applicable codes, self-performed on site.
Yes, we respond across North York and the surrounding area. Response time is fast mobilization.
Across North York, the work concentrates around the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor, each job scoped to its own conditions.
Mostly commercial and office development, institutional and healthcare, transit-oriented development, and industrial lands, Harrowgate Group serves developers, contractors, municipalities, and property owners across North York.
In North York, the work accounts for transit-corridor density, aging commercial stock needing retrofit, and servicing around active subway and 401 infrastructure, so the methods, materials, and equipment is matched to the site.
Stormwater storage, and in North York, spec'd to the load and environment on site.
Harrowgate Group responds to North York with fast mobilization, covering the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor and the surrounding area.
All of North York, the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor and the surrounding neighbourhoods, plus nearby Toronto, Vaughan, Markham.
Yes, Harrowgate Group handles commercial and office development, institutional and healthcare, transit-oriented development, and industrial lands across North York, 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 North York project and provides a clear, documented quote.
Yes, Harrowgate Group assesses North York underground stormwater systems on site and provides a documented scope before any work begins.
Real knowledge of North York, the Yonge and Sheppard centres, Consumers Road business park, Downsview lands, and the 401 employment corridor, fast mobilization, work that is licensed, insured, and fully WSIB-covered, and full documentation on every project.
Harrowgate Group has served City of Toronto 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 North York.
Yes, Harrowgate Group builds the work across North York 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.