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How Much Does a Sunroom Cost?

$900 - $1,800 per m2

    How Much Does a Sunroom Cost?

    The average cost of building a sunroom is between $900 and $1,800 per metre, which includes electricity and lighting. The materials used to construct the sunroom are one of the main factors that influence the cost. The type of glass installed will also determine the price, which requires obtaining quotes for double glazed and low-E glass.

    City Average Cost
    Sydney $10,000 – $30,000
    Melbourne $5,000 – $20,000
    Brisbane $14,000 – $30,000
    Canberra $5,000 – $15,000
    Perth $12,000 – $28,000
    Hobart $10,000 – $25,000
    Adelaide $15,000 – $22,000


    What is a Sunroom?

    A sunroom is designed to provide a recreational space that provides the indoors and outdoors into one useful setting. An average of 80 per cent of sunrooms consists of glass to offer views of the outdoor settings each season. The temperature in the room is controlled to ensure residents can feel like they’re outside in any weather condition.


    A sunroom with windows looking out to a garden and a dining table and chairs

    A sunroom with a dining table and chairs / Source: Good Guys Construction and Maintenance

    Benefits of Building a Sunroom

    Increase Your Property’s Value

    One of the main reasons homeowners decide to build a sunroom on their property is because the addition can increase the property value by an average of $13,000 once it’s completed. The return on investment can make it worth building the sunroom to ensure you earn more of a profit on the house once it’s time to sell.

    Additional Interior Space

    The additional interior space provided with a sunroom can allow you to have more room to relax and unwind without feeling cramped in the home. If you plan to expand your family or move your parents into the house, it can offer extra room for everyone to have space.

    Enjoy the Sun Without Going Outside

    The main purpose of sunrooms is to ensure residents can spend time in the sun without having to go outside. In both cold and warm climates, you can continue to stay out but still, feel like you’re spending time in the backyard without having to suffer in the heat or freeze in low temperatures.

    Potential Greenroom

    Building a sunroom means that you can have the freedom to turn it into a greenroom due to its design. Plants will be able to continue thriving and growing throughout the year in a spot where they can get plenty of sunlight without trying to survive in harsh weather conditions.

    Factors Impacting the Cost of a Sunroom

    Type of sunroom

    The type of sunroom built and the features it includes determine the cost. A three season room cost is lower because the temperature isn’t controlled, which limits how often it’s used. A four season sunroom cost is higher because it will require installing heating or air conditioning. This ensures you’re never limited on when you can spend time in the sunroom.

    Materials used

    Those who select asphalt shingles for a roof will end up spending less than a sunroom with a glass rooftop. Rooms with sliding glass doors will also be priced lower than those with French doors. Pre-fabricated kits are also available and start at $4,000 and often include lower-end materials, which can limit the lifespan of the addition.

    Size of the sunroom

    The size of the structure also influences the cost to build a sunroom. It determines how much prep work is required on the site and the number of materials used. The size also affects how many hours the crew will need to work to construct the sunroom.

    Site preparation

    The area where the sunroom is built on the property must be prepared to ensure the foundation can be laid. The site preparation can include clearing trees and pouring concrete. Still, the cost depends on the current conditions of the property.

    Price Estimates for Different Types of Sunrooms

    Four Season Room

    Four-season rooms include heating and air conditioning to ensure they can be enjoyed each season. The price of a sunroom is $22,000 to $75,000.

    Three Season Room

    Three-season rooms can be enjoyed when the weather is moderate and do not include appliances like air conditioners or heaters. The price range is $13,000 to $35,000.

    Glass Solarium

    Glass solarium prices range from $25,000 and $80,000 and require a foundation to be built with glass extended from the top to the bottom. It can take two to four weeks to build.


    Conservatories have glass walls and a glass roof and cost an average of $30,000. They can offer more views of the surroundings and contribute to the design of the residential property.

    Sunroom Kit vs Custom Built Sunroom

    • Sunroom kits are pre-fabricated and can cost less than a custom sunroom.
    • Custom sunrooms are specific to your vision and can blend in with your house.
    • Sunroom kit prices average around $15,000 and custom sunrooms are an average of $30,000.

    How to Hire a Builder

    How to Create an Accurate Estimate

    • Determine the size of the area.
    • Consider additional work or materials that may be required.
    • Receive various quotes.

    Licencing and Qualifications

    • Ask about the builder’s license and contact the state to confirm they’re qualified to build a sunroom on your property.
    • Ask for three references to ensure you can talk to former customers and ask if they were satisfied with the work performed by the builder.
    • Read online reviews to get an idea of the builder’s reputation in the industry.
    • Inquire about the experience of the builder.

    How to Save Money Hiring a Builder

    Build a Smaller Sunroom – Building a smaller sunroom means using fewer materials and spending less paying in labour. The sunroom can be ideal for smaller families and can make it possible to fit into your budget.

    Choose a Three-Season Sunroom – Consider building a three-season sunroom without heating or air conditioning to save thousands of dollars on the features used to control the temperature in the space. Although the sunroom is limited to how often it can be used, it will cost less and can be more affordable to build. You can also select lower-cost materials to be used.


    How much does a sunroom extension cost?

    Sunroom extensions cost an average of $28,000 and cost an average of $350 to $950 per square metre. The rate and final cost can vary depending on the size and type of the sunroom that is built. The installation of an air conditioner or heater can also affect the price.



    * The cost data is based on Oneflare and third-party sources

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