Cost of house extension at $25,000 vs. $100,000 vs. $250,000
- coraliefortin076
- Jul 1
- 4 min read
Updated: Aug 15


Adding to your home is a major decision that can significantly transform your living space and accommodate your growing needs. Whether you want to add an extra bedroom, a spacious garage, or a brand-new dining room, the cost of these projects varies depending on the size, complexity, and materials used.
At Plan Maison Québec, we understand that every project is unique and requires careful planning to stay within your budget and make your dreams come true. In this article, we'll explore the costs of home additions costing $25,000, $100,000, and $250,000 to give you a clear idea of the options available to you based on your budget.
$25,000 Home Extension: A Modest But Effective Project
A budget of $25,000 for a home addition is a realistic choice if you're looking for a modest but effective improvement to your living space. This amount allows for smaller projects, such as adding a room or an extension to enlarge a living room or bedroom. Typically, an addition at this price includes basic work such as the foundation, walls, and a roof. However, the choice of materials will be limited, and the finishing touches may be simpler.

For a modest addition, the project could include adding an additional medium-sized room using standard building materials. At this price point, it's important to carefully plan the space to maximize its efficiency. For example, you might consider converting an existing room into an extension or adding an extra floor without disrupting the main structure of your home.
At Plan Maison Québec, we can help you design addition plans tailored to your budget, offering creative solutions that meet your expectations while optimizing the available space.
$100,000 House Extension: A More Ambitious Project
If you have a budget of $100,000, you have more freedom to add comfort and style while creating a larger, better-equipped addition. At this budget level, it's possible to consider an extension that includes higher-quality materials, more personalized finishing options, and a more elaborate interior design.
A $100,000 addition could include the construction of:
a new wing of the house
a double garage with storage space
an upper-floor addition with a master bedroom and bathroom
At this price, infrastructure work, such as electrical and plumbing, will often be

included in the quote, allowing for a fully functional space. Homeowners can also choose to install modern amenities, such as more efficient heating and cooling systems, energy-efficient windows, and eco-friendly materials. This type of addition can really change the dynamics of your home and provide a pleasant and comfortable space for the whole family.
At Plan Maison Québec, our architects and designers will guide you throughout the design process to ensure your project meets your requirements and expectations. We work closely with you to ensure a personalized design that maximizes your budget.
$250,000 House Extension: A High-End Project
A budget of $250,000 for a home addition allows for ambitious and large-scale projects. At this price, you can not only add several rooms, but also provide your home with high-end amenities, luxurious materials, and meticulous finishes.
This type of budget can cover a home expansion by adding an entire floor, a large extension with multiple rooms, or the transformation of an older home into a modern, open-concept home. This project could also include:
the integration of home automation systems
high-end kitchens and bathrooms
rare and expensive materials such as hardwood floors, granite or quartz countertops, and high-tech fixtures.
The $250,000 addition also allows for more in-depth structural changes to your home, such as reconfiguring interior spaces to improve circulation, lighting, and overall aesthetics. In addition, you can invest in the thermal and acoustic insulation of your home for optimal comfort all year round.

At Plan Maison Québec, we offer a customized design service to ensure every aspect of your home addition is executed according to professional standards. Our architecture and construction experts will help you make the right choices to maximize your investment while creating a functional and elegant living space.
Conclusion : Cost of house extension in Quebec
Whether you're considering a $25,000, $100,000, or $250,000 addition, careful planning is essential to ensure each step of the project meets your budget and design expectations. At Plan Maison Québec, we specialize in designing construction and renovation plans tailored to your needs and budget. So here is what you need to know about the cost of house extension in Quebec.
Whether it's a modest addition or a more luxurious expansion, our team of experts is ready to assist you in creating your dream project. With Plan Maison Québec, transform your living space into a place that perfectly meets your needs. Together, let's bring your project to life!
Do not hesitate to contact us to discuss your expansion ideas and obtain a personalized quote.
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