Grading Plan
Lot Grading & Drainage Design for Ontario Developments
We prepare stamped grading plans that satisfy municipal reviewers, manage surface water, and protect adjacent properties from drainage impacts.
Why It Matters
Why a Grading Plan Is Essential
A grading plan is required for virtually every Site Plan Approval and building permit in Ontario. It demonstrates how stormwater will be directed away from structures, how grades tie into adjacent properties, and that the development meets municipal drainage standards.
Municipal Approval
Satisfies grading and drainage requirements for Site Plan Approval and building permit applications.
Drainage Control
Directs surface runoff away from buildings and neighbouring lots using engineered grades and swales.
Flood Risk Reduction
Ensures positive drainage across the site to prevent ponding, basement flooding, and erosion.
Coordination with Servicing
Grading is coordinated with storm sewer, catchbasin, and utility layouts for a fully integrated design.
Deliverables
What We Deliver
Existing Conditions Survey
Review of existing grades, topography, and adjacent property elevations to establish design constraints.
Proposed Grading Plan
Stamped drawing showing finished grades, spot elevations, swales, catchbasins, and drainage flow arrows.
Drainage Area Map
Delineation of on-site drainage areas and direction of runoff to municipal storm infrastructure.
Erosion & Sediment Control
Temporary measures to prevent sediment migration during construction, as required by the municipality.
Lot Grading Certificate
Post-construction grading certificate confirming as-built grades comply with the approved plan.
Municipal Submission Package
Stamped drawings formatted to the specific requirements of the reviewing municipality.
Ready to Move Your Grading Plan Forward?
Contact our team for a free consultation on your grading and drainage design requirements.
Get In Touch
Start Your Project
Drop us a line and our Land Development Experts will contact you as soon as possible.