Beautifully Finished Basements, Built for How You Live

At Otis Interiors, we specialize in turning underutilized basements into beautifully crafted, functional living spaces that elevate your home’s comfort, value, and lifestyle in Guelph and the Tri-Cities.

Whether you envision a cozy family room, a high-performance home gym, a modern in-law suite, or a spacious home office, our basement renovation process ensures a seamless transformation from concept to completion. We combine smart design with expert craftsmanship to reimagine your basement into a warm, inviting, and practical extension of your home.

With Otis Interiors, your basement becomes more than just square footage—it becomes a purposeful, inspiring space designed around your lifestyle. Let’s bring your basement vision to life with thoughtful design and quality construction.

How we work:

1 -  Basement Design & Pre-Construction 

Planning is Where the Magic Happens

Before we swing a single hammer, we take the time to get clear on your goals for the space. Whether you're finishing an unfinished basement or completely reimagining an existing one, our pre-construction planning process is the foundation of a purposeful layout which leads to a successful renovation.

We’ll work with you to create a tailored design plan, ensure your basement meets local building codes, and map out every detail—from layout to lighting, flooring to functionality. The result? A clear, streamlined plan that makes the build smoother, faster, and stress-free.

2 - Basement Construction

We Stick to Our Schedule So You Can Free Up Yours

Once construction begins, we follow a detailed project schedule outlining every phase of the renovation, from framing and insulation to finishing touches like flooring, trim, and built-ins. You’ll always know what to expect and when.

Our team respects your home and your time, maintaining a clean and organized work site and providing regular updates so you feel confident and informed throughout the process.

3 - Project Close Out & Client Walk Through

2 - Project Close-Out & Client Walkthrough

Your New Basement, Move In Ready!

When your basement renovation is nearly complete, we’ll guide you through a full walkthrough of your new space. This is your opportunity to explore every corner, ask questions, and ensure everything is finished to your satisfaction.

We’ll also address any final touch-ups or outstanding items to make sure your basement is truly move-in ready and built to last.

Home Renovation Cost Guide

for Guelph, Kitchener, Waterloo, & Beyond

View average pricing for kitchens, bathrooms, additions, & more. Discover what’s possible with your renovation!

Innovation in Basement Renovation Services

A basement is more than just extra space—it’s a chance to reimagine how your home works for you. At Otis Interiors, we take a collaborative, client-focused approach to basement renovations, beginning with a deep dive into your vision and lifestyle to ensure the final result feels like a natural extension of your home.

  • Specialized Expertise: Our experienced in-house team specializes in basement finishing and renovation, bringing expert knowledge and hands-on craftsmanship to every stage of the process. By handling design and construction under one roof, we eliminate the hassle of coordinating multiple contractors, ensuring your project runs smoothly and stays on track from concept to completion.

  • Your Vision, Our Priority: From our first conversation to the final reveal, your goals guide everything we do. Whether you're planning a guest suite, entertainment area, home office, or multipurpose space, we’re here to offer expert advice, tailored solutions, and ongoing support every step of the way.

  • Craftsmanship That Elevates: We don’t cut corners. Every basement we build in Guelph, Kitchener, Waterloo, Cambridge, and the surrounding areas is thoughtfully designed and expertly constructed with long-term use and enjoyment in mind. From insulation to finishing touches, we consider every detail to create a space that’s both beautiful and built to last.

Popular Features to Include in Your Guelph Basement Renovation

  • Family Entertainment Room

    Movie nights, game days, and everything in between.

     Design a cozy, multi-functional media space with surround sound, a big screen, and comfy seating for the whole family. Your new favourite hangout is just downstairs.

  • Basement Bathroom Addition

    A stylish solution that adds comfort and convenience.

     A well-designed bathroom makes your basement more self-sufficient—ideal for guests, teens, or as part of a full suite. Sleek tile, smart layouts, and spa-inspired finishes? Yes, please.

  • Home Office or Remote Work Space

    Work from home—without working from the kitchen table.

     Stay focused in a quiet, custom-built workspace with built-ins, great lighting, and acoustic insulation. Designed for productivity, with all the comforts of home.

  • Custom Wet Bar or Kitchenette

    Entertain in style, right downstairs.

     Whether it's for hosting friends or upgrading your Netflix snacks, a modern wet bar or kitchenette adds function and flair. Cheers to that!

  • Built-In Storage & Organization

    Less clutter, more calm.

     Make the most of every inch with custom shelving, closets, and smart storage solutions that look as good as they work.

  • In-Floor Heating & Insulation

    Goodbye cold floors, hello cozy comfort.

    Combat Ontario winters with heated floors and upgraded insulation. It’s the key to a warm, energy-efficient basement you’ll love year-round.

  • Kids’ Playroom or Teen Lounge

    A space of their own (and peace of mind for you).

    Create a safe, fun zone with soft flooring, built-in toy storage, and bold colours. A perfect spot for playdates, creativity, or teen hangouts.

  • Home Gym or Wellness Studio

    Fitness that fits your lifestyle.

    Ditch the commute and build your dream workout space with durable floors, mirrors, and room to move. Zen or high-energy—your call.

  • Guest Suite or In-Law Retreat

    Hospitality, upgraded.

    Make guests feel at home with a private bedroom and bath tucked away in a beautifully finished lower level. It’s thoughtful, functional, and ready for visitors anytime.


  • Egress Windows & Modern Lighting

    Let the light in—safely and beautifully.

    Brighten your basement with larger egress windows and layered lighting. Bonus: it makes the space safer, airier, and more inviting.

Connect With Us To Kick Off Your Full-Service Basement Build!

*Please note we are currently accepting projects for 2025

Please know that we are a small team and only have the capacity for a certain number of projects per year to help us maintain the quality and customer service our team is committed to. After reviewing your form, we will touch base with the next steps. If we cannot take on your project at this time, or it is not a good fit for what we offer, we will let you know. 

We aim to respond to all inquiries within two business days.

Why work with us?

Our unique approach offers comprehensive services that allow a seamless execution to curate a beautiful space you are excited to come home to and proud to show off. 

We build value.

We work to maximize function and your investment to reimagine your home.

We dig deep.

We’re driven to capture the essence of your family so we take time to find out what matters to you. Then we translate this into a beautiful personal and bespoke plan. 

We know the rules.

We know about the Ontario Building Code, zoning laws and handling tedious permit applications. Whatever your permit requires, we’ve got you covered!

We handle everything.

Our unique advantage lies in our in-house team of designers and builders, enabling accurate design-build services that ensure consistency and quality at every step.

We keep communication open.

We value communication and endeavour to update you regularly on all project progress as we work together. We are your renovation partners every step of the way. 

We focus on quality.

We focus on the details. From the products used to the construction details, we ensure your space is built right and looks great for years. 

Service Area

Otis Interiors serves Guelph, the Tri-Cities, and the surrounding areas with our basement design & construction services.

We’re here to help you with your project in these cities, towns, and the neighbourhoods within. See the following list for a snapshot of popular areas we work.

If you don’t see your area or have further questions, contact us today.

  • Otis Interiors proudly serves Guelph, including its most beloved neighborhoods such as Exhibition Park, Kortright Hills, Hanlon Creek, Old University, and West Willow Woods. From historic charm in St. George to the family-friendly atmosphere of Waverley and Guelph Junction, we understand the unique character of every corner of the city. Whether it’s upscale projects in Maltby or modern designs in other areas, we bring tailored solutions to Guelph’s vibrant community.

  • In Kitchener, Otis Interiors works across diverse neighborhoods like Grand River North and South, Chicopee Hills, and Stanley Park. We enhance homes in the historic charm of Hespeler Village and modernize spaces in Idlewood, Heritage Park, and Victoria Park. From Preston to Rosemount, we bring sophisticated design solutions to every project in this dynamic city.

  • Our team is proud to serve the vibrant city of Waterloo, offering services in neighborhoods like Grand River Park, Heritage Park, Stanley Park, Idlewood, and Chicopee. We also work in areas such as Deer Ridge, Doon South, Brigadoon, and Carriage Crossing, bringing exceptional designs to every home. From the upscale charm of Hidden Valley to the scenic beauty of Kiwanis Park and Lexington, Otis Interiors transforms spaces to fit every style and vision.

  • Otis Interiors delivers elegant designs to Cambridge, including its charming areas of Galt and Preston. Whether it’s crafting timeless interiors in historic neighborhoods or modernizing homes in growing communities, we bring a unique touch to every project.

  • In Breslau, Otis Interiors brings innovative and personalized design solutions to its family-friendly and rapidly growing community. Our work enhances both modern builds and classic homes, reflecting the area’s evolving character.

  • Serving the scenic community of Conestogo, Otis Interiors specializes in creating homes that reflect the natural beauty and close-knit feel of this charming area.

  • Known for its unique market and charming heritage, St. Jacobs is a community Otis Interiors proudly serves with bespoke designs that honor its local character.

  • In Fergus, Otis Interiors combines contemporary trends with the town’s rich history, delivering designs that fit both traditional and modern aesthetics.

  • Otis Interiors enhances homes in Elora, bringing innovative designs to complement its artistic vibe and beautiful riverside views.

  • Our services in Puslinch emphasize bespoke designs that reflect the area’s blend of rural charm and modern sophistication. Other areas in and around Puslinch we serve include Morriston, Aberfoyle, Freelton, Carlisle, Flamborough, and Valens.

  • In Erin and Hillsburgh, Otis Interiors transforms homes into stylish and functional spaces that suit these peaceful, small-town communities.

  • Otis Interiors creates designs that enhance the natural beauty and serene lifestyle of Eden Mills, bringing a modern touch to rural living.

  • Serving Rockwood, we specialize in designs that balance contemporary style with the town’s small-town charm and picturesque surroundings.

  • In Rockton (and nearby Sheffield, Troy, & St. George), Otis Interiors brings a fresh perspective to classic and modern homes, enhancing the timeless appeal of this rural community.

  • Otis Interiors works in Elmira, blending contemporary design with the area’s strong sense of community and traditional roots.

  • Our designs in Ariss focus on capturing the peaceful rural lifestyle, creating elegant spaces that reflect the charm of the countryside.

  • In Belwood, Otis Interiors transforms homes into stunning retreats, inspired by the scenic beauty of the Belwood Lake area.

  • Otis Interiors is proud to serve Campbellville, a picturesque community known for its scenic landscapes and small-town charm. Whether enhancing rustic farmhouses or modernizing family homes, we craft designs that reflect the natural beauty and tranquility of this unique area.

 

Basement Renovation FAQs

  • The cost of a basement renovation in Guelph, Kitchener, Waterloo, or Cambridge can vary depending on the size of the space and the scope of work. On average, homeowners can expect to invest between $55,000 to $150,000+ for a professionally finished basement. Factors like adding a bathroom, custom cabinetry, or a legal basement apartment will affect the final price. At Otis Interiors, we work towards providing detailed estimates and transparent pricing to help you make informed decisions based on your budget and goals.

  • Most full basement renovations take approximately 6 to 10 weeks from the start of construction, depending on the complexity of the project. Design planning and permitting can add time to the overall timeline. At Otis Interiors, we build a custom project schedule before construction begins so you know what to expect every step of the way—and we stick to it.

  • Yes, in most cases, a building permit is required for basement renovations, especially if you’re adding or modifying plumbing, electrical, or creating a legal secondary suite. As a full-service renovation company, Otis Interiors handles all the necessary permit applications and inspections to ensure your project is fully compliant with local bylaws and building codes.

  • Absolutely. Adding a basement bathroom or kitchenette is a great way to increase both functionality and resale value. Our team will assess your existing plumbing and layout to determine the most efficient and cost-effective way to incorporate these features into your design, ensuring everything meets current codes and works seamlessly with the rest of your home.

  • Yes—finishing your basement is one of the best investments you can make in your home. A well-renovated basement adds valuable square footage, increases property value, and improves your home’s overall functionality. Whether you need extra living space, a rental unit, or a quiet place to work, a finished basement can transform the way you live in your home.

  • The possibilities are endless. Some of the most popular basement renovation ideas include:

    • A family entertainment room or media space

    • A guest suite or in-law apartment

    • A home office or remote workspace

    • A gym or wellness room

    • A legal rental unit for additional income

    • A playroom or teen hangout space

    At Otis Interiors, we tailor your basement design to match your lifestyle, priorities, and long-term plans.

  • Absolutely. A properly renovated basement should be comfortable, dry, and energy-efficient. At Otis Interiors, we prioritize high-quality insulation, moisture control, and air sealing to protect your investment and ensure your space is livable year-round. We also assess existing issues like dampness or poor ventilation and provide solutions before construction begins.

  • Yes, creating a legal basement apartment is possible—but it must meet specific requirements set by the City of Guelph and surrounding municipalities, including separate entrances, fire-rated separations, egress windows, and more. Our team is well-versed in building legal secondary units and can guide you through every step, from zoning and permits to construction and inspection.