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What if your basement could make you serious money? Here’s how to make it fully compliant with the law.

2025-10-23
6 min
Jason Gagnon

Converting a Basement into a Rental Apartment: What You Need to Know

Turning a basement into a rental unit can be an excellent way to generate income and increase a property’s value — but it requires strict compliance with building codes, municipal bylaws, and safety standards.


1. Regulatory Compliance

Each Canadian province has its own building and fire codes, along with additional municipal regulations. The main requirements typically include:

  • Minimum floor area and ceiling height

  • Size and number of windows

  • Plumbing, heating, and ventilation systems

  • A complete kitchen and bathroom

  • Fire-resistant insulation, smoke and CO detectors

  • Electrical safety and accessible exits

The apartment must have at least two exits, one of which can be a window that is easily accessible in case of emergency.


2. Risks of a Non-Compliant Unit

An unregistered or non-compliant apartment can lead to hefty fines and may endanger the safety of tenants. Renters have the legal right to request proof of compliance from the property owner.


3. Conversion Costs

The total cost depends on the current condition of the basement.
A finished basement that already has plumbing and large windows will cost less to convert than an unfinished space.
Expenses usually include installing a bathroom, kitchen, private entrance, and bringing everything up to code.


4. Added Value

Converting a basement into a rental suite can yield an average return on investment of about 75 % upon resale.
For instance, a $50,000 renovation could add roughly $37,500 to the home’s market value.


5. Steps to Follow

Before starting the project:

  • Request multiple quotes and hire a qualified contractor

  • Review municipal bylaws and obtain all necessary permits

  • Plan your financing, for example through a mortgage broker such as Multi-Prêts Équipe Caron


In Summary

Transforming a basement into a rental apartment is a profitable and increasingly popular project, but it must be carried out properly — with professional guidance and full compliance with local regulations.

If this article piqued your curiosity or if you have questions about real estate, don't hesitate to contact Jason Gagnon, your residential and commercial real estate broker. With his expertise in the regions of Quebec City, Jason is here to support you in all your processes, whether for buying, selling, or evaluating a property.

Representing the company The Agency, Jason Gagnon offers you a personalized service tailored to your needs. For thorough and professional follow-up, you can contact him by phone at (418) 522-8831 or by email at info@jasongagnon.ca.

Visit his website for more details on his services and to discover the current real estate opportunities: www.jasongagnon.ca.

Whether you are a potential buyer or seller, Jason Gagnon is ready to answer all your questions and provide the necessary assistance to complete your real estate projects in his service areas. Don't miss the opportunity to benefit from his expertise.

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Jason Gagnon

Courtier immobilier résidentiel et commercial

Courtier immobilier résidentiel et commercial spécialisé sur la Rive-Nord et la Rive-Sud de Québec, j’allie expertise locale et engagement à l’excellence pour concrétiser vos projets immobiliers. <br><br> Mon approche se concentre sur vos besoins et votre vision, avec une écoute attentive et des solutions adaptées. Proactif, je prévois les défis et les surmonte avec des stratégies efficaces. Plus qu’une transaction, je vois chaque projet comme une aventure humaine, bâtissant des relations durables basées sur l’authenticité. <br><br> Que vous souhaitiez acheter, vendre ou investir, je suis à vos côtés pour rendre votre expérience simple, agréable et réussie.

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