Unlock your home’s full potential with Ottawa’s trusted basement renovation specialists. From cozy family recreation rooms and custom home theatres to legal secondary dwelling suites, RenosGroup delivers precision craftsmanship, tailored layouts, and seamless project execution.
Transform your unfinished lower level into a warm, inviting, and valuable extension of your home with Ottawa’s trusted basement renovation contractors. From custom family rec rooms and home theaters to legal secondary rental suites (SDUs) and basement bathroom additions, RenosGroup delivers precision craftsmanship backed by our full 2-year warranty, fair 10% deposit model, and a trusted subtrade network.
While many Ottawa basement contractors demand 30% to 50% upfront before framing begins, we only require a 10% deposit. You pay in clear, milestone-based increments as each phase is inspected, completed, and approved.
We stand firmly behind our basement builds. Every basement renovation project is protected by our comprehensive 2-year warranty covering all carpentry, framing, subflooring, drywall, plumbing, and electrical installations.
Building a legal rental suite or adding a lower-level bathroom? We manage all City of Ottawa architectural plans, structural engineering approvals, egress window requirements, and ESA electrical inspections from start to finish.
Whether converting a raw concrete basement in Kanata or updating an outdated lower level in Barrhaven, we provide complete, turnkey solutions tailored to your lifestyle and architectural requirements:
Create the ultimate entertainment space for family and guests. We install Roxul Safe'n'Sound acoustic soundproofing insulation, thermal subfloor systems, recessed LED pot lighting, custom media walls, and concealed wiring conduits for seamless TV and surround-sound integration.
Generate reliable rental income or build a private multi-generational in-law suite. We specialize in City of Ottawa and Ontario Building Code compliant secondary suites, complete with 30-minute fire separation (5/8" Type X drywall), sound decoupling, dedicated kitchens, private entrances, and certified egress windows.
Add functionality and value with a custom 3-piece or 4-piece lower-level bathroom. Our licensed Journeyman Plumbers handle concrete slab trenching for rough-in plumbing, backwater valve installations, walk-in custom tile showers, and custom wet bars featuring Canadian-made Cabinetsmith and Muskoka cabinetry.
Safety and legal building code compliance are paramount. We perform precision foundation concrete cutting and install oversized egress windows and galvanized window wells, bringing natural sunlight into lower bedrooms while meeting mandatory emergency escape regulations.
Eliminate cold basement floors and damp air. We install continuous rigid foam or closed-cell spray foam insulation against foundation walls with sealed vapor barriers, paired with insulated DRIcore or DMX subfloor systems that provide a thermal break and prevent concrete moisture migration.
Creating a legal secondary dwelling unit (SDU) in Ottawa requires strict adherence to Ontario Building Code (OBC) regulations and municipal zoning bylaws. RenosGroup manages every technical requirement to ensure your rental suite is 100% legal, safe, and fully permitted:
Continuous 30-minute fire barrier installation using 5/8” Type X drywall, resilient metal decoupling channels, and dense mineral wool insulation between suites.
Precision foundation core-cutting and egress window installations meeting minimum clear-opening dimensions for emergency bedrooms.
Expert structural planning ensuring finished ceiling heights maintain the required minimum 1.95m (6'5") clearance across all living areas.
Complete architectural drawings, engineering reviews, ESA electrical permits, and City of Ottawa municipal building inspections to final occupancy sign-off.
Transparent pricing benchmarks for basement finishing and remodeling projects across Greater Ottawa:
| BASEMENT PROJECT SCOPE | TYPICAL INVESTMENT RANGE | AVERAGE TIMELINE | KEY INCLUSIONS & TRUSTED SUBTRADES |
|---|---|---|---|
| Open-Concept Rec Room & Living (500 – 800 sq. ft.) | $35,000 – $55,000 | 4 – 5 Weeks | Thermal framing & insulation, DRIcore subfloor system, drywall, trim, LED pot lights, luxury vinyl plank (LVP) flooring & paint. |
| Full Basement with 3-Piece Bath (Bedrooms + Bath + Rec Room) | $55,000 – $90,000 | 6 – 8 Weeks | Full 3-piece bathroom addition, concrete breaking for underground plumbing rough-ins, bedroom with egress window, trusted electrical & plumbing subtrades. |
| Luxury Entertainment Suite (Home Theatre + Custom Wet Bar + Bath) | $90,000 – $135,000+ | 8 – 10 Weeks | Custom wet bar cabinetry, quartz countertops, beverage refrigeration rough-ins, acoustic soundproofing insulation & luxury bathroom finishes. |
| Legal SDU / Secondary Dwelling Unit (Turnkey Rental Apartment) | $90,000 – $150,000+ | 10 – 12 Weeks | Full kitchen, bathroom, separate private exterior entrance, Ontario Building Code (OBC) fire separation, acoustic soundproofing, egress windows & City of Ottawa building permits. |
Free site evaluation, moisture check, & layout consultation at your Ottawa home.
Select subflooring, lighting, bathroom fixtures, & finishes with transparent fixed pricing.
Framing, rough-in plumbing/electrical by proven trade network, insulation, drywall, & clean jobsite management.
Detailed quality walkthrough, municipal permit sign-off, & full 2-year warranty activation.
Discover our specialized remodeling services and transparent pricing guides for your Ottawa home.
Second-storey additions, ground extensions & sunrooms.
Complete whole-home remodeling & open-concept layouts.
Canadian cabinetry, custom islands & quartz countertops.
Walk-in showers, custom tile work & luxury vanities.
Legal secondary suites, family rec rooms & home theaters.
Accessible roll-in showers, ramps & aging-in-place solutions.
Comprehensive cost breakdowns, series pricing tiers, and realistic budget expectations for Ottawa homeowners.
Hintonburg, Wellington Village, Golden Triangle, Sandy Hill, Dow's Lake & Island Park.
Beaverbrook, Morgan's Grant, Bells Corners, Stonebridge, Half Moon Bay & Centrepointe.
Chapel Hill, Fallingbrook, Convent Glen, Findlay Creek, Blossom Park & Cumberland.
The first step is reaching out to us for a free in-home consultation.
At no charge to you, we’ll visit your home to determine all your needs and the specs of your basement. During this time, you can let us know what you want the most out of your renovations. We’ll adhere to your desires while coming up with a feasible action plan.
Our team will take detailed measurements to make sure everything checks out. Once you give us the green light, we’ll prepare a contract written in plain English.
You won’t have to deal with any industry jargon or hidden charges when you work with us.
We’ll also provide you with an accurate quote for the overall cost of the project. If you want basement renovations in Ottawa, read on to learn more about what we can do for you at RenosGroup.
So why are basement renovations more dangerous than others? It’s due to the nature of the basement itself. You see, a basement isn’t just a room; it’s an integral part of your home’s foundation. Botched basement renovations can lead to severe damage to the foundation. That, in turn, can compromise the safety of your entire house. Bear in mind; you might not be able to see the damages right away, as foundational damage often takes time to show up. That’s why it’s not worth risking it doing it on your own or hiring cheap ‘professionals.’ A well-done basement remodel in Ottawa can make your property prominent.
Fire hazards
At RenosGroup, we always follow strict industry safety codes and guidelines. Due to our experience and expertise, we know how to navigate these hazards. To provide our clients with the best service, we’ll also point out any safety hazards as we see them. If our team runs across any existing mold or cracks, we’ll halt everything and let you know. Crystal clear communication is a big part of our customer service.
The final reason you shouldn’t attempt basement renovations in Ottawa yourself is quality. After all, you want your renovations to look good, right? If you’ve never worked on a basement before, your first time will not look spectacular.
The same is true if you hire cheap contractors with no skill or proven track record. It’s worth paying the extra money to achieve the high-quality standards we deliver. Not only that, but cheaper contractors are likely not to have insurance. The same is true if you attempt renovations on your own.
The safest way to renovate your basement is with insured professionals like us.
We have WSIB insurance at RenosGroup. That means you’re 100% covered should any incidents arise during the renovations. The unfinished basement can feel cold and lonely. We transform it into a relaxing and inviting addition to your home, with professional basement finishing in Ottawa. Not only will we deliver fantastic quality, but you’ll stay protected the entire time. There’s no better way to undergo basement renovations in Ottawa than with our fantastic team.
If you have a general idea of what type of basement living space you want, we can help you flesh it out. While your concept is the first step, we’ll help you turn it into a fundamental idea with a design plan. Our professionals can also help you add necessary details to your vision.
Let’s say that you want to transform your basement into a guest bedroom. You have an idea where you want a bed and a dresser, but that’s as far as you’ve gotten. That’s when one of our team members points out the perfect area to turn into a guest bathroom. Your eyes light up at the thought, now realizing your guests won’t have to go upstairs to use the restroom.
We’ll help you fully envision your idea and make the most out of the space you have available. With our professional basement finishing in Ottawa, we make every square foot count. We create plans that enhance circulation, illumination, and comfort.
Subflooring: The Foundation of a Warm, Dry Ottawa Basement
Ottawa winters are notoriously cold, and concrete basement floors are highly susceptible to moisture, dampness, and cold temperatures. If you lay finished flooring (like luxury vinyl plank, laminate, or carpet) directly over bare concrete, you risk mold growth, rot, and freezing floors that make your new space uncomfortable.
At RenosGroup, we believe that successful basement finishing starts from the ground up. That is why we install high-quality subflooring systems equipped with built-in vapor barriers and thermal breaks.
Our subflooring process ensures:
* **Moisture Protection:** Blocks ground moisture from seeping up and damaging your finished floors.
* **Thermal Insulation:** Raises the floor temperature by up to 5°C, making your basement feel cozy year-round.
* **Cushioned Comfort:** Adds a slight bounce to the floor, reducing joint fatigue and protecting your family.
Don’t let cold floors ruin your basement renovation. Contact our team today to discuss the best subflooring options for your home.
Ottawa’s seasonal temperature swings and high soil moisture levels make proper subflooring a critical step in any basement remodel. At RenosGroup, we
don’t just lay flooring directly over cold concrete. We install high-performance subfloor systems (like Dricore or insulated subfloor panels) that create a thermal break and a moisture barrier. This keeps your floors up to 10°F warmer, protects your luxury vinyl plank (LVP) or carpet from moisture damage, and prevents mold growth—ensuring a warm, dry, and healthy living space for your family
Are you planning to add a bedroom, a home office, or a legal secondary suite to your basement? If so, safety and legal compliance must be your top priorities.
According to the **Ontario Building Code (OBC)**, any basement bedroom must have at least one egress window. An egress window is a specially designed window that can be easily opened from the inside without tools, providing an emergency exit in the event of a fire.
To meet OBC standards, an egress window must provide:
* An unobstructed opening of at least **0.35 m² (3.8 sq ft)**.
* No single dimension (height or width) less than **380 mm (15 inches)**.
* A proper window well with adequate drainage if the window is below ground level.
Beyond safety and legal compliance, installing egress windows completely transforms your basement finishing project by flooding the space with natural light, making it feel like a natural extension of your upper floors. As experienced basement contractors in Ottawa, we handle the entire process—from concrete cutting and structural framing to window installation and well drainage.
Schedule a free in-home consultation to ensure your basement bedroom is safe, legal, and beautiful.
Many homeowners ask: Do I need a permit to finish my basement in Ottawa? The answer is yes. Any structural changes, new plumbing rough-ins, or electrical modifications require building permits from the City of Ottawa. RenosGroup is a fully licensed and insured general contractor. We manage the entire permit application process, draft the required architectural plans, and coordinate all municipal inspections (structural, plumbing, electrical, and insulation) so you have total peace of mind that your basement is 100% legal and safe.
We’re one of the only renovation teams in Ottawa that offer free in-home consultations. Other contractors feature a different model where you have to visit their showroom. That’s to entice you with expensive products for your renovation instead of working with your wants and needs.
These contractors will charge you before even stepping foot inside your basement. To us, that’s completely insane.
Ask yourself this question, “How can a contractor know how to renovate my basement if they’ve never seen it?”
The answer is that they can’t!
They aren’t concerned with making your vision a reality. Instead, they want to up-sell you with fancy products so they can profit as much as possible. Somehow, this model has become the industry standard in today’s age.
We disagree with that business model, which is why we’re different.
At RenosGroup, we work for you, not the other way. Our team will listen to all your ideas while providing candid suggestions of our own. While we do have a showroom, it’s entirely online. Our professional basement renovations in Ottawa, takes you through every concept from start to finish.
Our team of subtrades consists of elite-level contractors with a wide array of different specialties. We’ve got:
Interior designers
Plumbers
Structural Engineers
You’ll love how fast and efficient we’re able to work due to this diversity of talents. With us, you’ll never have to wait three days for the plumber to show up. No matter what your renovation project calls for, we’ve got teams of contractors equipped to do it. We offer basement renovations in Ottawa that are efficient, affordable, and professional.
One prominent trend homeowners are taking advantage of more and more is an open basement plan. Instead of limiting your basement to one design idea, why not incorporate many? With an open design, you can have an area for a couch, TV, bar, and dining area. Open design plans allow you to mix and match ideas while promoting a sense of community. They can also make smaller basements appear a lot larger than they are. Who needs walls anyway? An open plan lets you take full advantage of the square footage of your basement.
Do you wish you had more living space? Then you can view your basement as an extension of the upstairs. A popular trend is to stick with the same color scheme, flooring, and trim as the upstairs. That way, your basement will have a seamless flow and feel just like another room. With the extra space, you can get creative. Do you want another living room with a fireplace? Would you prefer a bar or a wine cellar? It’s all up to you.
You’d be pleasantly surprised to find out how feasible a home theater can be with the right company. We can deck out your basement with theater-style seating, lighting, flooring, and architecture. Of course, we’ll install a giant LED projection screen to make it as authentic as possible. All your friends and family will flock to your basement to enjoy the latest movie in a fun and safe way.
If you’re a musician, then this is the idea for you. Let us soundproof your walls and create a fantastic recording studio. Why end there? We can also help you design a stage with all the necessary hookups. You can now host entire concerts from your basement. The sky is the literal limit when you choose RenosGroup for basement renovations in Ottawa.
If you appreciate a good beer, then you can turn your basement into a fully functional bar or brewery. We can help you pull out all the stops, a draft system, a built-in toaster oven, and bar-style seating. What would a home bar be without the right lighting fixtures? Our interior designer will work with you to come up with your ideal bar atmosphere.
Do you have a lot of children? Then they’d love a fun space for themselves. Since it’s in the basement, you can enjoy some peace and quiet upstairs! The basement is also the perfect room to organize and store all your children’s toys, books, and games. You can designate areas for video games and others for educational learning. Let our interior designers know what you have in mind for your kids’ room, and we’ll make it happen.
For all the entrepreneurs in Ottawa, you need a space in your home to handle business. If you ask us, the basement is a perfect spot for an office. It’s away from the rest of the house and free from distractions. You can also deck it out with filing cabinets, printers, computers, desks, and even a lounge area. After all, who wouldn’t love a little nook to enjoy a break from being busy?
These are a few ideas to get your creative juices flowing for basement renovations in Ottawa. As you can see, there are lots of ways to spruce up your basement so that you can get more value out of your home. Your basement is a part of your overall square footage, so you might as well make the most out of it!
If you were a potential home buyer, which would interest you more:
The answer is pretty obvious. You’ll create far more interest from buyers with a finished basement. The nicer the basement is, the more interest you’ll gain. If you plan on selling your home sometime in the future, finishing your basement reno in Ottawa is a great idea. You’ll also get to enjoy the renovations for as many years as you decide to stay in the home, which is a plus.
When we renovate your basement, we’ll insulate it and install drywall to stop air from escaping. As a result, you’ll enjoy lots of savings on your energy bill each month. An unfinished basement is a disaster for saving on energy. That’s because hot and cool air can escape from unfinished basements with ease. If you want to stay warm or cool without going broke, then renovating and finishing your basement is what you need to do. It will definitely shock you at how much you’ll end up saving by renovating your basement with our team. Once we complete a finished basement in Ottawa, your basement will not feel like a storage space. It will be an active component of your home that will bring comfort and value.
Renovating your basement is one of the best ways to add value to your home. That’s because it increases the usable square footage in your house. You’re essentially adding another room, which is enormous for resale value. When it comes time to sell, you’ll get a lot more bang for your back, thanks to getting basement renovations in Ottawa.
Due to the benefits listed above, basement renovations are an excellent investment. You’ll enjoy:
With all these savings, you’ll make your money back in no time. In a few short years, a majority of our clients end up making their investment back.
With our basement renovations in Ottawa, you can finally get the most out of your home. Renovating is your chance to add the things that you wish you had to your existing space. With the help of our trained and experienced team, nearly anything is possible. We’ve already listed tons of ways that you can repurpose your space. You no longer have to limit your basement to be that dark, scary place that your kids fear. Instead, we can help you turn it into whatever you want it to be, including a fun kids’ room with nothing scary. We maintain open communication during your entire basement remodel in Ottawa. We strive to achieve quality results within time and budget constraints.
Homeowners prefer our Ottawa basement finishing service, since we offer:
Other reasons to choose our team for your renovation project include:
We’ve renovated countless kitchens, bathrooms, and basements in Ottawa, and we’d love for yours to be next. Making us even more tempting is our online showroom for home renovation products. Though we don’t sell any products these pages can help with your product selections while your in your own home. We have access to interior designers to help you match colours and fixtures bringing out the warmth and comfort you want your home to exude. Design work does come with extra fees, but well worth it when it comes to the final look of the finished product.
To meet our team. There’s no reason to wait to reach out to us for basement renovations in Ottawa. We’ll go to rigorous lengths to ensure your total satisfaction with our work. Our team will listen to your wants and desires, and we’ll make sure that we make your dream design a reality. Please don’t be shy about getting in touch with us for a totally free in-home consultation today. There’s no risk to you at all, as we won’t present you with a contract or quote until you let us know you want to hire us. We’d love to sit down with you and chat about your design ideas, so feel free to contact us or give us a call at (613) 727-9427 to get started now.
"My sister recommended RenosGroup. Keith provided a detailed estimate with costs for product, labour and time broken down for each aspect of the job. I love my new bathrooms and new glass shower."
"Thank you so much Keith, Mike and the team for all your hard work on the complete finishing of our basement. We needed it ready to be rented as soon as possible and you guys really came through."
"I had a big renovation job of my bathroom and Keith and Clavil were great! We have a beautiful accessible bathroom now. Keith was great with ideas and suggestions. High quality work!"
The average price of a complete basement renovation is $40,000-$60,000. As with other renovations, it will depend upon the size of your basement and the materials we use. A basement with a bathroom would cost upwards of $60,000 (Home Renovation Costs Explained)
A standard open-concept rec room and living area typically takes 3 to 5 weeks. Basements with full bathroom additions, bedrooms, and custom wet bars take 4 to 7 weeks, while complete legal secondary dwelling units (SDUs) require 8 to 12 weeks from framing to municipal sign-off.
We do not recommend that you do this. You could potentially injure yourself or cause expensive damages. Our professional team is insured, and we have a flawless track record.
Yes, if you are adding bedrooms, bathrooms, structural framing, HVAC modifications, or building a legal rental suite, the City of Ottawa requires a building permit. RenosGroup handles all architectural plans, structural engineering, and municipal building inspections.
Remodeling means you will reconfigure the layout and structure of the home. It requires a permit, and it’s a more involved process. Renovating is tweaking your existing interiors.
Summer months are considered the best time. That’s due to the dry air and lack of mud and mush. Yet, winter month renovations tend to be cheaper, so there’s an advantage there as well.
All electrical, plumbing, and gas work is performed by our proven network of Trusted Electricians, Journeyman Plumbers, and TSSA Gas Fitters, ensuring 100% compliance with Ontario Building Code and municipal safety standards.
For basements, the flooring and electrical will cost you the most. Our Renos Group team will help you determine a tight budget and then stick to it.
Our team will consult with you and then come up with a detailed design plan.
An exciting basement will add lots of value to the resale price of your home. It also adds to the overall usable square footage of your house.
The interior of the city of Ottawa. Ex: Nepean, Kanata, Stittsville, Glebe, Barrhaven, Hunt Club, Gloucester, Orleans
$15,000 or 2 weeks of labor for our crew.
Under the Ontario Building Code and City of Ottawa bylaws, legal secondary suites require a minimum ceiling height (1.95m), continuous 30-minute fire separation (Type X drywall and resilient channel), interconnected smoke/CO alarms, proper egress windows in bedrooms, a dedicated kitchen and 3-piece bathroom, and separate heating/electrical shutoffs.
We install continuous rigid foam or spray foam thermal insulation against foundation walls with sealed vapor barriers, paired with insulated DMX or DRIcore subflooring systems that create a thermal break and prevent concrete moisture migration.
