Offices in Ottawa and Perth
(613) 722-1500

CONTACT US (613) 722-1500

Importance of Construction Contracts in a Construction Project

Importance of Construction Contracts in a Construction Project


Mann Lawyers

Posted December 17, 2020

Construction and renovation projects are a big investment for all parties involved, whether you’re an Owner, a Contractor or a Subcontractor. Such projects involve risks, including but not limited to, financial risks, project delays and safety risks.

The best way of alleviating these risks and chances of a construction or renovation project running into issues is by having a well-drafted construction contract.

Construction contracts are an important tool which can provide certainty to a construction/renovation project as well as mechanisms to mitigate risks. They also define the relationship between the parties to the said project. The parties to a construction contract can be, for example, an Owner and a general contractor, a general contractor and a subcontractor, a subcontractor and a sub-subcontractor, etc.

Of many clauses that can be included in a construction contract, some important clauses to consider when entering a contract are the following:

  1. Scope of Work

It is important that the work be defined as precisely as possible and that any work that is to be excluded be expressly stated in the contract. Defining the work too broadly may create misunderstandings and false expectations, resulting in potential disputes between the parties in the future.

  1. Payment Terms

Stipulating the terms of payment in a construction or renovation project can not only assist in avoiding delays in payment and with the project, but it can also assist in ensuring cash flow throughout the project.  Of payment terms to define are the dates as to when payments are to be made, the method of payment as well as interest, penalties and remedies, should payment be late.

  1. Project Price, Cost and Change Orders

The lack of clarity as to the project price (or the subcontract price, if applicable) can lead to significant dispute between the parties. In fact, construction and renovation disputes are most commonly related to the price and cost of the project.

A construction contract should specify whether it is a fixed-price contract or a cost-plus contract. A fixed-price contract is the most common type of contract which provides that the contractor will perform the specified scope of work at a fixed-price.  Such contract can provide certainty to an owner as to the cost of the project, if finances are limited. A cost-plus contract provides that an Owner will pay the actual costs paid for labour and materials on the project. In addition to same, the Owner will pay a contractor fee for managing the project. With this type of contract, it is easier to make changes to the project. Further, an owner has the benefit of receiving all invoices to support the cost and price of the project.

Most construction or renovation project require changes to the initial Scope of Work. Terms should be set out in the contract in the event that changes are requested or required to expand the initial scope of work. Of common terms to be stipulated are the requirement that changes be agreed to in writing by way of change orders before work can commence and that the change orders specify the new scope of work, the cost of the additional work, the additional time required to perform the work, the new project schedule and new payment terms. A lack of detailed written change orders can expose the parties to further dispute in their construction project.

The above noted clauses are only a few of many important clauses that can be included in a construction contract. The type of clauses that should be included in a construction contract is case-specific. Whether you are a Contractor, Subcontractor or an Owner, consult with a lawyer before entering into any construction contract.

This blog post was written by Stephanie Simard, a member of the Real Estate and Family Law teams.  She can be reached at 613-369-0385 or at

More Resources

Blog |
Estate Litigation


Posted September 20, 2022

Disputes over a will after a testator has died can result in costly and time-consuming litigation.  Testators may anticipate this conflict and try to avoid[...]
Blog |
Business Law


Posted September 6, 2022

Canada is a lush, beautiful country, and nature abounds. Canada is also a vibrant economic market and foreign companies looking to do business in Canada[...]
Blog |
Real Estate


Posted August 30, 2022

There has been much discussion on the changes in the real estate market, particularly on affordability. To save costs, many prospective buyers and sellers may[...]
Blog |
Practice Management


Posted August 23, 2022

In an earlier blog post, I discussed some practice development tips for newer lawyers.  This post continues that conversation. Not Work Life Balance – Integration[...]
Blog |
Practice Management


Posted August 15, 2022

Most seniors have an opinion on what new or newer lawyers should be considering concerning practice development.  Me too.  I don’t think there is a[...]
Blog |
Environmental Law


Posted August 8, 2022

Purchasing a property that is contaminated can be daunting.  There are many risks to consider, including significant liability risks.  In some cases, a full assessment[...]

Subscribe to Our Newsletter

"*" indicates required fields

This field is for validation purposes and should be left unchanged.