Basement Renovation Services in Ottawa

Capital Basement Renovation provides complete basement renovations and finishing — from design and permits through construction. Our team also builds legal basement apartments, basement bathrooms, and walkout entrances, including the structural, plumbing, electrical, insulation, and finishing work involved. With more than a decade of local experience, licensed and insured contractors, and in-house designers, architects, and engineers, we understand Ottawa building codes and the demands of the local climate.

We prepare detailed plans, provide clear estimates, and handle required permits and inspections so the work is completed safely and correctly. You stay informed throughout the renovation, with clear communication about decisions, timelines, and costs from the initial consultation through project completion.

Locally Trusted and Reviewed by Ottawa Homeowners 

Licensed, Insured, and Committed to Safety Standards 

Free, Detailed Estimates for Accurate Budget Planning

Detailed, Transparent Project Planning 

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Finished basement bedroom with pot lights in Ottawa

Basement Services by Project Types

Our basement renovation services are designed to help homeowners get the most value out of their investments. Whether its basement finishing in Ottawa, legal basement apartment conversions, or walkout basement transformations, our renovation plans are customized to address your specific needs.

At Capital Basement Renovation, we offer:

Basement Finishing

Basement Finishing

There is unlimited potential when renovating an unfinished or underutilized basement. With our customized basement finishing services, you can upgrade your space with newfound comfort and style. You won’t have to worry about dampness, floor installations, lighting issues, ceiling heights and other issues associated with unfinished basements.

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Modern finished basement bathroom renovation in Ottawa
Legal Basement Apartment

Legal Basement Apartments & In-Law Suites

A legal basement apartment will net you an excellent return on your investment. In addition to your new rental unit bringing in an extra source of income, transforming your basement into a legal suite in Ottawa offers substantial benefits including significantly elevating your property value, creating an independent and private room for an in-law suite, or having a versatile space for the entire family to enjoy.

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Kitchen in a legal basement apartment in Ottawa
Walkout Basement

Basement Walkouts & Separate Entrances

A walkout basement can be beneficial for any home. It’s an excellent way to enhance natural light, create the illusion of added space, and offer potential income opportunities in the future. We specialize in designing and constructing separate basement entrances and installing basement windows, so a walkout basement is right in our wheelhouse!

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Walkout basement renovation with separate entrance in Ottawa

How Much Does a Basement Renovation Cost in Ottawa?

Basement renovation costs in Ottawa depend on the size and condition of the space, how you plan to use it, and the work required to meet code. A basic finish generally costs less than a bathroom, legal apartment, or custom project. The table below highlights common pricing factors for each.

Project typeWhat affects pricing
Basic basement finishingSize, insulation, flooring, ceiling, electrical
Finished basement + bathroomPlumbing location, fixtures, waterproofing
Legal basement apartmentFire separation, egress, kitchen, permits
Custom basementMillwork, wet bar, theatre, premium finishes

See our 2026 Basement Renovation Cost in Ottawa Guide →

Why Choose Capital Basement Renovation?

Thinking about basement renovations in Ottawa? At Capital Basement Renovation, you’ll work with a team that has over a decade of experience renovating basements. We know all about the Ottawa building codes we must abide by and the permits we need to acquire. In addition, factoring in local weather conditions when installing new flooring, insulation, electrical, and plumbing. Our goal is to give you a comfortable, stylish basement space without stress or surprises.

Choose Capital Basement Renovation and benefit from:

Quality Materials, Fixtures & Finishes

We use durable renovation materials that deliver results that look great in Ottawa and stand the test of time.

Complimentary Design Consultation & Personalized Plan

Our free initial meeting helps us capture your ideas and craft a plan that fits your lifestyle and space.

Fresh Design Concepts & Pleasing Ideas

We offer creative basement layouts to make the most of your area, while considering flow, lighting, and comfort.

Maximize Space & Reveal Hidden Potential

From storage zones to recreation corners, we help you unlock unused areas and create more living space.

Full-Service Support During Renovation

We stay in touch during every stage of Ottawa basement renovation. Keeping you informed and ready for the next steps without surprises or delays.

Great Prices & Flexible Payment Options

Our cost-effective pricing delivers real value. Pay easily with plans that adapt to your budget.

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Recent Ottawa Basement Renovation Projects

Below are highlights from recent projects, showcasing a variety of finishes, layouts, and styles we’ve built across Ottawa. Browse these photos for inspiration and ideas for your own basement renovation project.

  • basement playroom renovation in Ottawa
  • Ottawa basement after renovation
  • Ottawa basement gym after renovation
  • shower installation in ottawa bathroom
  • walk in in shower in basement bathroom
  • bath tub installed in basement bathroom
  • basement bathroom remodel in orleans
  • luxury basement bathroom remodel
  • bath shower combo
  • luxury small bathroom renovation in basement
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Our Basement Renovation Process

Discover how we turn unfinished basements into beautifully liveable spaces, step-by-step. Here’s what to expect during our basement finishing process.

Step 1. Consultation & Basement Assessment

We set up a meeting to evaluate your basement’s layout, take measurements, and discuss your ideas. It’s important to us that we understand your needs from the beginning.

Step 2. Detailed Estimate

We deliver a clear estimate with no hidden fees or vague details, so you know exactly what you’re paying and when.

Step 3. Design, Layout & Scope

Using digital renderings, we present your proposed basement layout in our office. After visualizing a design, you may request to tweak certain aspects before we begin work.

Step 4. Material Selection

Our showrooms offer a wide selection of flooring, lighting, cabinetry, and fixtures. We help you choose durable, attractive options within your budget that are both practical and appealing.

Step 5. Construction & Trade Coordination

Once all drawings, concepts and finished are approved by you, we get to work. Watch a straightforward renovation happen in as little as 3 to 6 weeks!

Step 6. Final Inspection, Walkthrough & Warranty

Once construction is complete, we arrange the final inspection and walk you through the finished basement. We review the work, answer your questions, explain care and maintenance, and address any outstanding details. Your project is then backed by our five-year labour warranty.

Reviews

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“I’ve lived in Ottawa for over 40 years, and I’ve seen plenty of renovations done to homes in the area. When it came time to finish our basement, I wanted a team that I could trust to do the job right the first time. Capital Basement Renovation delivered in every way. They were respectful of our space, kept everything clean, and paid attention to every detail. I appreciate the clear communication and honesty throughout the project. Our basement looks better than I imagined, and I’m confident it will last. Thank you for the fantastic work!”
Harold

 “I wanted something warm and cozy with plenty of storage, and they really listened to what I needed. They guided me through all the choices with patience and answered every question, which was so helpful. Capital Basement Renovation turned our basement into a wonderful family space where we can actually spend time together”

“First renovation ever, and I couldn’t have asked for a better experience. They explained everything and didn’t push me into anything. The team was patient, reliable, and finished on time. My basement is now an awesome hangout spot, and I’m thrilled with the result. Highly recommend!”

Trust Your Basement to Professionals!

If need a basement design consultation or an estimate for your basement renovation, get in touch with us. We have a great deal of experience and basement ideas that you will love!

Our design consultation and estimate are absolutely FREE! We would love to hear from you!

Free Consultation
Basement Ideas

Service Area

  • Bells Corners
  • Barrhaven
  • Carp
  • Carleton Place
  • Gloucester
  • Greely
  • Kanata
  • Kemptville
  • Nepean
  • Madoc
  • Mississippi Mills
  • Manotick
  • Perth
  • Stittsville
  • Orleans
  • Vanier
  • Richmond
  • Centrepointe
  • Munster
  • Westboro
  • Kinburn
  • Rockcliffe Park
  • Goulburn
  • Fitzroy Harbour
  • Cumberland
  • Dunrobin
  • Blackburn Hamlet
  • Glebe
  • Ottawa
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Basement Renovation FAQ

Capital Basement Renovation provides you with basement solutions that fit your needs. Remodel your basement exactly the way you want with a team of professional renovators in Ottawa. We understand that renovating a basement is a serious investment and that you should stay informed about the process of your basement renovation. Here are some of the frequently asked questions that you might want to know before proceeding. Don’t hesitate to contact us for any additional inquiries you may have about your basement renovation project.

The average cost to renovate a basement varies with the square footage of your basement. In 2026 the prices usually start from $50 per square foot and up. However, the final cost depends on materials, finishes, appliances and structural changes that take place. Capital Basement Renovation We can help you arrive at a solid estimate in a short time. Read more about cost of basement renovation in Ottawa.

Yes, in most cases you require a permit to start your basement renovation. Attempting to convert your basement to a legal basement typically requires obtaining an appropriate building permit which ensures that the renovation meets all of the local safety standards and local building codes. As part of our project, Capital Basement takes responsibility for handling all necessary permits on your behalf.

A finished basement can add 5% to 15% to your home’s overall value, since it increases the usable square footage and is highly appealing to buyers.

Typically the basement renovation timeline depends on the project’s complexity and the overall size of the working space. A simpler basement renovation count take as little as 3 to 6 weeks, while a more complex renovation which requires adding complete rooms like bathrooms and kitchens can take 3 to 6 months to complete.
Once we know the details of your renovation project we will be able to provide you with a general timeline of your project.

A full basement renovation can include layout planning, framing, insulation, drywall, flooring, ceilings, lighting, electrical work, plumbing, heating, ventilation, storage, and painting. Depending on your plans, it may also cover a bathroom, bedroom, kitchen, wet bar, or separate entrance. Permit coordination and required inspections may be included for eligible projects.

Basement finishing usually means completing an unfinished space with insulation, framing, drywall, flooring, ceilings, lighting, and paint. A basement renovation may involve changing an existing finished layout, replacing older materials, moving plumbing or walls, or adding rooms. Renovation is typically broader and may require more design work, permits, and inspections.

Yes. Capital Basement Renovation can plan and build legal basement apartments in Ottawa where the property and proposed layout meet local requirements. The project may involve zoning review, permits, fire separation, safe egress, ceiling height, ventilation, plumbing, electrical work, and a separate entrance. We coordinate the applicable permit and inspection process for eligible projects.

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Yes. A bathroom can often be added to an existing basement, even when the space was finished previously. Feasibility and cost depend on the location of drain lines, water supply, ceiling height, ventilation, waterproofing, and available space. Our team assesses the basement, plans the layout, and handles the required plumbing, electrical, permit, and inspection work.

All our works foster a long-term commitment to our clients, therefore, we provide a 5-year warranty on our services covering the labour. Feel free to contact us for any questions you may have after your renovation is done.

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