What does a driveway grading and regrade cost in Ottawa?

Driveway grading and regrading in Ottawa typically costs $800 to $3,500 depending on the scope of work, drainage complexity, and amount of material needed. Simple surface grading runs $800 to $1,500, while full excavation and regrading with new granular material can reach $2,500 to $3,500 for an average driveway.

Surface grading and minor adjustments involve reshaping the existing driveway surface and adding a thin layer of granular material to correct minor drainage issues, eliminate small depressions, and restore proper slope. This work costs $800 to $1,500 for a typical Ottawa driveway and can often be completed in one day. Surface grading works well when the existing base is stable but the top layer has settled or eroded, creating puddles or reverse slopes that direct water toward the house foundation.

Full regrading with excavation is necessary when drainage problems are severe, the existing base has failed, or major slope corrections are needed. This involves excavating 150mm to 300mm of existing material, importing fresh Granular A base material, and regrading to proper specifications with a minimum 2% slope away from the house. Full regrading costs $2,500 to $3,500 including excavation, disposal, new granular material (typically 15 to 25 tonnes for an average driveway), and compaction. This is often done in preparation for asphalt resurfacing or as a standalone repair for gravel driveways.

Ottawa's clay soils and freeze-thaw cycles make proper grading critical for driveway longevity. Clay expands when wet and shrinks when dry, while freeze-thaw cycling pushes water into any low spots where it freezes and expands. A poorly graded driveway in Ottawa will develop ice buildup, foundation water problems, and accelerated surface deterioration. The city's 50+ freeze-thaw cycles per winter turn minor grading defects into major drainage failures within 2 to 3 seasons.

Additional costs to consider include catch basin installation ($800 to $1,500) if surface drainage alone cannot handle water volume, French drain installation ($15 to $25 per linear foot) for subsurface drainage, and permit fees ($150 to $300) if the regrading alters municipal drainage patterns or involves work within the road allowance. Grading work that changes how stormwater flows off your property may require City of Ottawa approval.

Timing matters significantly in Ottawa's climate. Grading work should be completed between May and October when the ground is not frozen and compaction equipment can achieve proper density. Granular material placed and compacted during Ottawa's dry summer months performs better than material placed during wet spring or fall conditions when achieving proper compaction is difficult.

When to hire a professional: Any grading work involving excavation deeper than 300mm, drainage alterations, or slopes steeper than 8% requires professional equipment and expertise. Proper compaction requires a plate compactor or vibratory roller — hand tamping is insufficient for Ottawa's freeze-thaw conditions. Surface grading of existing stable material is manageable for capable homeowners with access to a small skid steer or compact tractor.

Need help finding a grading contractor? Ottawa Driveways can match you with local professionals who understand Ottawa's soil conditions and drainage requirements for a free estimate on your project.