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Frequently Asked Questions About Our Sunroom Services
How Much Do 4 Season Sunroom Additions Cost?
The cost of our sunroom additions typically ranges from $60,000 + tax to $200,000 + tax (CAD). Because each project is uniquely tailored to your preferences and the specific conditions of your property, final pricing depends on several key factors — including the type of sunroom, its size, the level of customization, and overall project complexity.
In 2024, the average cost of a turnkey sunroom ranged from $80,000 + tax to $90,000 + tax.
To help you plan your sunroom project with confidence, we’ve put together a detailed guide outlining what influences pricing and what to expect during the design and installation process. Learn more about sunroom pricing here.
How do I get started?
Simply give us a call at 1-888-786-7666 or reach out through our Contact page. We’ll guide you through your options, answer questions, and arrange a consultation to explore designs and pricing.
Do I need a building permit for my sunroom?
Yes. In almost all cases, a building permit is required for your new sunroom. Building permits are intended to protect you and your home by ensuring that the proposed construction complies with zoning laws, safety codes, and building regulations. To obtain a building permit, you’ll need architectural drawings, engineering plans, and permit applications.
In some cases, a building permit may not be required for certain types of projects. For example, structures that are under 108 sq. ft. and free-standing, meaning they are not attached to your home, often don’t need a permit.
What is a minor Variance?
A minor variance functions as a secondary building permit. In newer subdivisions, homes are built with lot coverage setbacks completely maximized.
When your sunroom is in close proximity to your neighbours property line, the allowable glass on that wall will vary. This is determined at the time of building permit application. As per the Ontario Building Code, if you are under 1.2 meters from your neighbours property line, you can’t have any glass on that wall. The further you go from this mark will allow you more glass square footage on that wall. The reason for this is for “flame spread”. If there is a fire in your home, the first place it will break through is glass. This is to prevent a fire from spreading to the property next door. The only exception to this rule is screen rooms.
Should you need to apply for a minor variance with the building department, our team at Four Seasons Sunrooms & Additions will handle the application process to allow us to exceed the maximum lot coverage and setback regulations.
What are the different types of sunrooms available and which one is right for me?
We offer a variety of sunrooms, each with distinct features and benefits suitable for different needs and preferences. Among our offerings are the Studio Sunroom, Cathedral Sunroom, Victorian Conservatory, and Georgian Conservatory. The Studio Sunroom is renowned for its versatility and is a great fit for almost any house style. The Cathedral Sunroom, with its high vaulted ceilings, brings in a sense of openness and offers an expansive view. For those seeking a touch of elegance and a classic design, the Victorian Conservatory is an ideal choice. The Georgian Conservatory, characterized by its symmetry and strong lines, offers a blend of traditional charm and modern aesthetics
How can I be assured of the material and construction quality of the sunrooms?
Our sunrooms and home additions are proudly built and engineered in Canada by Canadians. We use only the highest quality materials in the construction of our sunrooms, including premium Four Seasons’ CONSERVAGLASS™ designed to stand the test of time. Each sunroom is constructed with precision, following the highest industry standards to ensure each sunroom is built to last. Four Seasons Sunrooms & Additions also offers comprehensive warranties and customer satisfaction guarantees for peace of mind. Our commitment to quality is backed by exceptional customer testimonials and a dedication to craftsmanship.
What is CONSERVAGLASS™?
Four Seasons Sunrooms’ CONSERVAGLASS™ NXT with Stay-Clean Technology was designed specifically for the extreme demands of a room built entirely of glass utilizing the most advanced glazing technology available. CONSERVAGLASS™ NXT helps make Four Seasons room additions cooler in summer and warmer in winter, and its advanced construction techniques promise a lifetime of outstanding performance. CONSERVAGLASS™ NXT with Stay-Clean Technology excels in all the categories important to you, including maintenance, energy efficiency, safety and strength, and longevity. Learn More
Can I customize the design and materials of the sunroom?
Absolutely! We offer a wide range of customization options to ensure your sunroom aligns with your vision. Please contact one of our design experts to help you explore and decide on the perfect design and materials.
Why Choose Four Seasons Sunrooms & Additions?
Four Seasons Sunrooms and Additions is a locally-owned and operated family business, proudly serving London, Kitchener/Waterloo, Hamilton, Sarnia, Windsor and surrounding areas.
With over 30 years of experience, we take the time to fully understand your preferences, offering tailored solutions that meet your unique needs. Fully licensed and insured, Four Seasons Sunrooms & Additions is dedicated to delivering exceptional and quality workmanship in every project.
What makes your sunrooms different from others on the market?
We work exclusively with Four Seasons Sunrooms, the worldwide leader in sunroom technology. Their glass, aluminum, and structural systems are known for superior energy efficiency, durability, and long-term performance — ideal for harsh Canadian climates.
What sunroom services do you provide?
At Four Seasons Sunrooms & Additions, we offer full end-to-end services including design, engineering, permitting, and installation of:
- Four Season insulated sunrooms
- Conventional Additions
- Three Season sunrooms
- Screenrooms
- Patio covers and glass roofs
- Sunroom replacements and upgrades
Are your sunrooms energy efficient?
Absolutely. Four Seasons Sunrooms uses advanced insulated frames and high-performance glass engineered for Canadian climates. This helps regulate temperature, reduce drafts, and improve year-round comfort.
What areas do you serve?
Four Seasons Sunrooms and Additions is based in Southwestern Ontario. We are a locally-owned and operated family business, proudly serving London, Kitchener, Waterloo, Hamilton, Sarnia and surrounding areas. Being a local family company allows us to offer personalized service and fast support!
What type of sunroom designs can I find in your gallery
Our sunroom gallery showcases completed projects including 4 season rooms, 3 season rooms, cathedral-roof sunrooms, straight-eave sunrooms, conservatories, screen rooms, and patio covers.
Each photo represents an actual sunroom project completed by our expert team, designed for Ontario homeowners. We believe in transparency and showing real-world results, not staged or stock images.