Excavation Cost Guide 2024 - How Much to Budget for Your Renos?

Excavation is an unavoidable step in numerous construction projects, whether to build a foundation, put in a swimming pool, or for landscaping purposes.

How much does it cost in Canada, and what factors influence the overall price? How can you properly plan to avoid setbacks? This guide details everything from excavation service fees and cost-affecting factors, with tips and tricks to optimize your budget in between.

How Do You Calculate the Average Cost of Excavation Services in Canada?

The table below details the average cost of foundation excavation jobs, including the hourly rate for excavation services. The costs listed can fluctuate depending on the soil type, equipment used, and project complexity.

What Are Home Site Excavation Costs Based On?

What Are the Project-Specific Rates to Excavate a Pool, Crawl Space, or Basement?

Common excavation projects, such as digging a crawl space, basement, driveway, or parking lot, including swimming pool and septic tank installations, are priced according to the scope of work and the size of the excavation site. The table below details the service rates for different excavation projects:

What Is the Rate of Foundation Excavation Work?

Here’s a table detailing the commonly used excavation equipment, with hourly rates, project-specific estimated duration, and recommended area size:

What Factors Affect the Cost of Excavation?

The cost of excavation services varies based on several factors, such as equipment use and land specificities. Below is an overview of the main factors to consider when putting together an excavation project budget.

Excavation Equipment

Equipment selection is paramount for ensuring the efficiency and safety of excavation jobs, especially when dealing with complex sites (wooded lots, for example). Different equipment is used based on the project’s specific needs and hourly rates vary as well.

Mini excavators: Such machinery is ideal for space-restricted lots and smaller jobs, such as digging a trench for a French drain or underground utilities. Compact excavators are used to work in zones where larger equipment won't fit or can't be accessed.

Excavators: Used for large-scale jobs, excavators are designed to dig home sites and land requiring extensive excavation. Their robust build makes it a sought-after machine for large-scale projects, such as preparing a strong foundation or excavating a pool site.

Hydraulic breaker: A must-have for any rocky soiled or very hard site, such a piece of equipment allows the controller to break through rock, ensuring an efficient excavation job, even under difficult circumstances.

Other Factors

Besides the equipment mentioned above, several other factors will influence the overall cost of an excavation project.

• Type de soil: The soil type has a major influence on costs. Soils with excessive clay or rocks, including those with high water tables, mandate specific equipment and require more time, which, in turn, increases the total cost.

• Season: Work carried out during the winter can lead to additional fees given that the ground is frozen solid, which complicates the excavation process, mandating reinforced equipment. During the summertime, the weather is more favourable, reducing labour time and equipment costs.

• Land accessibility: A hard-to-access site or land located in a remote area entails additional costs for equipment and material transportation, which increase the final invoice.

• Permits: Excavation projects often require municipality-issued permits and must comply with safety standards, especially those established by provincial building codes. Plan for drainage materials fees for gravel or sand on top of labour costs.

Knowing what equipment is needed, including land-specific components, allows you to better gauge your budget and optimize your expenses based on the project you're planning.

Additional Fees to Consider for an Excavation Project

During the course of an excavation project, you may be confronted with unexpected costs, so your budget should include some leeway from the onset.

Rubble Management and Excavated Material Disposal

Rubble management is a key part of excavation projects since it can incur significant fees, especially if the excavated material is contaminated. Disposing of earth, rocks, and other excavated materials can call for adapted transportation (e.g. dump truck) in some cases. Certain soil types require specific measures if specific contaminants are found, such as iron ochre, increasing overall management and disposal fees.

Permits and Municipal Fees

Municipal permits are often mandatory for all excavation projects and vary based on the location of the job site and the scope of the excavation project. Cities can impose specific fees that, based on the project's complexity and local requirements, can increase overall excavation costs. Note that municipal fees can be much steeper if the excavation job requires a septic tank or French drain installation, affecting the project's overall cost.

Geotechnical Study and Soil Analysis Fees

Geotechnical studies, which consist of soil analyses and subsurface conditions, are crucial for large-scale excavation projects. Such investigations determine the properties unique to the soil and the eventual additional work required, especially if the project entails building a foundation or other underground utilities. Specific soil analyses, such as water infiltration or water table levels, are often deemed necessary, incurring additional preparation fees.

Jobsite Preparation and Post-Excavation Restoration

Once the work is completed, site restoration is often scheduled to wrap up the project. This process includes site cleaning, land levelling, and, at times, adding materials to stabilize the surface, especially when dealing with clay or rocky soils. Land preparation and restoration fees hinge on the size of the excavated site, the drainage material used, and whether structures like retaining walls are found nearby.

Tips and Tricks to Lower Excavation Job Costs

To lower excavation job costs, it’s essential to hire the right contractors or excavation companies to lead the project to completion. Make sure they’re experienced, licensed, and aware of provincial- or city-specific excavation rules and regulations. A good contractor will advise you regarding the most cost-effective and efficient excavation methods and procedures based on the land in question and the extent of the work.

Additionally, rigorous project planning is paramount to minimizing setbacks. Plan for rubble management, choose the optimal time of year to carry out the job, and account for additional costs. Taking such precautions optimizes your budget, ensures the quality of your excavation project, and minimizes additional fees.

FAQ

What is the difference between excavating and boring?

While both terms might be used interchangeably, excavating and boring aren’t synonymous. Excavating typically consists of removing large quantities of dirt to build a foundation, whereas boring is a targeted procedure, one that’s often necessary to install pipelines or other underground utilities.

How to excavate land?

Land excavation starts with a soil analysis and a selection of all mandatory equipment. Then, levelling and digging work are done according to project plans or blueprints.

How much does a foundation cost?

The average cost of a foundation is between $7,500 and $30,000, depending on the size of the home site and soil type.