Grading & Drainage (Labor Only)

1. Yard Grading & Leveling

Labor for grading is driven by the volume of soil displacement and the technical requirement for a 2% minimum slope away from the foundation. Prices are per Square Foot (sq. ft.).

• Below Market ($0.60 – $1.30 /sq. ft.): Minimal manual effort focused on localized depressions. Best for flat lots with direct machinery access where no significant sub-soil modification or structural sloping is required.
• Market Range ($1.30 – $3.10 /sq. ft.): Core labor for establishing critical drainage swales. Includes stripping old sod, high-density clay compaction, and laser-leveling to ensure water moves away from structural footings at a precise pitch.
• Above Market ($3.10 – $5.80+ /sq. ft.): Intensive labor on steep slopes or tight-access backyards where heavy machinery cannot operate. Includes the physical effort of hand-grading around existing mature trees, utilities, and delicate hardscape boundaries.

2. Drainage Systems (French Drains & Catch Basins)

Costs reflect the depth of trenching and the technical complexity of connecting subsurface water management systems. Prices are per Linear Foot (lin. ft.).

• Below Market ($12 – $21 /lin. ft.): Basic trenching for downspout extensions or simple surface emitters. Low man-hour requirement for gravel backfill or fabric wrapping in soft, easy-to-dig soils.
• Market Range ($21 – $39 /lin. ft.): High-stakes labor involving deep trenching (18-24″) to capture groundwater. Includes the effort of maintaining a consistent 1% pipe pitch, geotextile lining, and the manual hauling of clean drainage stone.
• Above Market ($39 – $67+ /lin. ft.): Working at depths exceeding 4ft or installing multi-chamber catch basins. Labor accounts for core-drilling through concrete, curb-cutting, or integrating high-capacity pumps for low-lying areas with poor natural drainage.

Expert Insight:
In 2026, grading is the primary defense for Ontario homes against basement flooding. **Market Range labor** accounts for the physical effort of ensuring a 2% slope (a 2-inch drop every 8 feet). Without this technical precision, water remains trapped against the foundation, creating the hydrostatic pressure that forces water through even the best-waterproofed walls in the GTA