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 Ajax, 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 Ajax 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.
Ajax underground stormwater systems work centres on sites with limited surface space. Managing stormwater underground where surface space is tight are the recurring drivers; each Ajax project is sized to its own situation, not a one-size approach.
In Ajax (Durham Region), underground stormwater systems demand is driven mainly by automotive and parts manufacturing, logistics and distribution, food processing, and institutional. Ajax's Bayly and Salem industrial corridors feeding the 401 anchor a strong automotive, logistics, and food-processing construction market. Demand centres on industrial slabs, truck courts, servicing, and loading-dock work.
Most of it sits around the Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands. Clients such as manufacturers, distributors, healthcare, and the Town of Ajax drive much of the Ajax work, and no two projects carry the same scope or ground.
From automotive and parts manufacturing, logistics and distribution, food processing, and institutional, no two Ajax underground stormwater systems jobs are quite alike. Harrowgate Group matches scope, equipment, and crew to the specific property each time.
Ajax conditions shape the response: lakefront exposure, heavy-truck 401 corridor loading, and mixed retrofit and new-build industrial. Each Ajax project has the methods, materials, and equipment chosen for that environment, matched to the site instead of a one-size approach.
In Ajax, 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.
On Ajax work the sequence is fixed: locate and protect what is in the ground, prepare the site, build to the drawings, compact and finish to grade, and restore the surface, documented at each stage.
On a typical Ajax project the underground stormwater systems work covers sites with limited surface space around the Clements and Bayly industrial corridor and clients like manufacturers, each scoped to its own situation and recorded for the file. Harrowgate Group also serves nearby Pickering, Whitby, Oshawa, so projects spanning the surrounding area stay with one team.
Every Ajax underground stormwater systems project is built to the engineered drawings and the applicable codes, methods, materials, and compaction or load results documented so the work is verifiable, not assumed.
What keeps Harrowgate Group busy with Ajax 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 Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands 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 Ajax projects, it's built to the engineered drawings and the applicable codes, self-performed on site.
Yes, we respond across Ajax and the surrounding area. Response time is fast mobilization.
Across Ajax, the work concentrates around the Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands, each job scoped to its own conditions.
Mostly automotive and parts manufacturing, logistics and distribution, food processing, and institutional, Harrowgate Group serves developers, contractors, municipalities, and property owners across Ajax.
In Ajax, the work accounts for lakefront exposure, heavy-truck 401 corridor loading, and mixed retrofit and new-build industrial, so the methods, materials, and equipment is matched to the site.
Stormwater storage, and in Ajax, spec'd to the load and environment on site.
Harrowgate Group responds to Ajax with fast mobilization, covering the Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands and the surrounding area.
All of Ajax, the Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands and the surrounding neighbourhoods, plus nearby Pickering, Whitby, Oshawa.
Yes, Harrowgate Group handles automotive and parts manufacturing, logistics and distribution, food processing, and institutional across Ajax, 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 Ajax project and provides a clear, documented quote.
Yes, Harrowgate Group assesses Ajax underground stormwater systems on site and provides a documented scope before any work begins.
Real knowledge of Ajax, the Clements and Bayly industrial corridor, Salem Road business park, and the 401 employment lands, fast mobilization, work that is licensed, insured, and fully WSIB-covered, and full documentation on every project.
Harrowgate Group has served Durham Region 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 Ajax.
Yes, Harrowgate Group builds the work across Ajax 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.