What Are the Impacts of the Rising Costs of Building Materials?
By Karine Dutemple
Updated on November 7, 2023

Do you intend to start a housing construction project shortly? As this project is certainly a large one, it is quite normal to have some concerns or questions about the current increase in the cost of building materials.
What will be its impact on the cost of your future property and what about the contracts already signed? Read on to find out!
The impact of rising construction material costs
Although you have already submitted an article on the subject, the situation surrounding the rising cost of building materials is once again a concern that is mobilizing many construction contractors. Indeed, it seems that the pressure on the construction industry is currently particularly strong.
Moreover, the lack of skilled labour does nothing to improve the situation. As a result, the ACQ recently submitted several requests to the Quebec government to prevent this already difficult environment from escalating.
To paint an evocative picture of the situation, it is important to note that the main materials affected are:
lumber;
truss;
plywood;
doors and windows;
roof farms;
plumbing items;
wood engineering products.
To a lesser extent, steel, concrete, aluminum, asphalt shingle and gypsum panels are also affected by the current price increase.
Of course, you are aware that a construction contractor must be able to generate a reasonable profit margin in a construction project. As a future owner, it is perfectly normal to question the concrete impact of this increase on the cost of this large-scale project.
Building a new home: Can costs be changed?
In the case of new construction, the preliminary contract stipulates that a contractor can increase the amount set for the cost of the work. However, note that this practice is supervised and must meet several criteria to be applicable.
First of all, be aware that the price increase must be unpredictable and that the adjustment of the cost of the work can only be made before the signing of the notarized sales contract. Besides, the manufacturer must provide supporting documentation to testify to the validity of its application to the buyer.
While the increase in the sale price of a property may be caused by an unpredictable fluctuation in the cost of materials or by a change in the working conditions of employees working in this sector, it may also be justified by an increase in the fees charged by the Residential Construction Guarantee. In the latter case, too, the contractor will be able to increase the amount initially determined for the sale of the property.
Once the supporting documents are provided, you will have 15 days to sign a document approving the change in the sale price. Finally, the new sale price will be set and considered to be approved by both parties.
Apart from the context surrounding the construction of a new home, it should be noted that a contractor may increase the asking price for a project if a clause in the contract allows it to be completed. Contracts provided to APCHQ members usually contain a mention in this regard to protect contractors from this type of situation.
For information, it is estimated that the current rise in the cost of materials will increase the budget required for the construction of a new home by about 10%.
What if there's no clause?

For contracts without a specific clause, then one must turn to the Civil Code of Quebec. The latter provides for what can be done in such a combination of circumstances depending on the type of contract signed. So here's what applies to:
An estimated contract: possible change if the increase is unpredictable when the contract is signed;
A contract-based enterprise agreement: no applicable changes;
Preliminary contract (a promise to sell): no changes allowed;
A cost-effective contract: possible change.
Get 3 renovation quotes for your home renovation project
RenoQuotes.com can help you get quotes for your home renovation project. If you submit your project to us, we’ll put you in contact with top-rated contractors. Fill in the form on the homepage (it only takes a few minutes), and you will get estimates from trusted professionals.
Dial 1-844 828-1588 to speak with one of our customer service representatives.
Looking for something else?
Related articles
The latest industry news, interviews, technologies, and resources.

Editorial Team
•07 Nov 2023
Bathroom renovations are always an excellent investment, as they tend to offer the best return. Not to mention, the bathroom is a fairly integral room in the home. This space is used on a daily basis for many essential activities, and this includes washing up in the morning as well as before bed, getting ready for work, taking care of overall hygiene and so forth. Even though it’s a small space, storage is essential.

Paul Riopel
•22 May 2024
Navigating Ontario's booming construction industry requires savvy bidding strategies. From understanding bid packages to mastering the bidding process, contractors must equip themselves with essential knowledge.

Editorial Team
•07 Nov 2023
More and more people seem to be switching to renewable energy sources to help power their homes or to decrease their dependency on traditional sources. While solar panels are still very much the go-to option for solar generation, a relatively new form may change the way we implement photovoltaic cells on our homes and those are solar shingles.

Editorial Team
•31 Mar 2025
Have you ever asked yourself why 85% of the flooring sold in North America is prefinished? Research shows that this sort of flooring is greatly preferred and a popular choice on account of its slew of advantages.

Cynthia Pigeon
•28 May 2024
It is no secret that a leaky roof can have severe budgetary repercussions: moisture problems, heat loss, and property damage.