How much does it cost to add a shed dormer cover

How Much Does It Cost to Add a Shed Dormer?

How much does it cost to add a shed dormer to my property? The costs to add a shed dormer will be anywhere between $3,000 to $60,000, depending on the scope of the project and your budget.

A shed dormer is a popular addition to the home. It can flood a once dark attic space with light, expand an indoor living space, add character to a home and refresh the overall look of a home.

Shed dormers projected from the main roof are usually larger additions to the house, installed in either the attic or the upper floor to create more space underneath. Unlike flat roof dormers, shed dormers feature a sloped roof that allows for easier water drainage. A high-quality shed dormer construction offers square footage, headroom, light, ventilation, and architectural interest to the house’s exterior.

As shed dormers are typically larger than other dormer types, they can come with a higher price point. Shed dormers come in a range of different shapes, styles, and sizes, all of which significantly impact the cost of construction.

In this article, we’ll provide you with a comprehensive breakdown of the prices associated with adding and constructing a shed dormer.


If you’re looking to expand your home in Australia, consider investing in a shed dormer. While shed dormers are often larger than other styles of dormers, they are an excellent option to increase space in a small home and add square footage to a room. Prices vary depending on project size, labour costs, location and the roof type you currently have; there is a dormer to suit every budget.

how much does it cost to add a shed dormer

So, how much does it cost to add a shed dormer to your home? With a basic budget, it can cost between $3,000 and $15,000 or more to add a shed dormer to your property. As you might imagine, a smaller shed dormer is considerably less expensive than a larger dormer. It is generally cheaper to add a dormer window to an existing space as an ‘add-on’ rather than a separate price. To reduce costs, it’s best to build a shed dormer as an addition to a roof replacement or a loft conversion while using simple materials.

With a mid-range budget of approximately $30,000, you can add architectural interest to your home and enhance the overall look of your property. Depending on the style of your existing roof, more expensive materials may be required to match.

With a high-end budget, you can easily spend upwards of $60,000 to build a dormer shed. Bespoke dormer windows can accentuate your home, adding balance, increasing natural light and a sense of spaciousness, and impressing guests who come to visit your home.


As shed dormer on average will cost $100 per square foot. However, the final price will vary depending on the following factors:

  • The costs of labour, whether you need to engage an architect as well as a roofing contractor
  • The slope of your roof
  • The cost and quality of materials
  • Climate and environmental factors
  • Unexpected issues

For a more cost-efficient dormer roof build, it’s best to do this addition simultaneously as you replace your roof.

shed dormer costs


Building a shed dormer yourself requires experience and skill in construction, the right tools and sourcing your materials. If you feel capable, it may feel plausible. However, DIY attempts are only going to be more costly down the line. When you engage an experienced roofing team, you ensure the job will be done correctly, saving you stress and money in the long term.


Shed Dormers can enhance the look of your home, adding more usable space by extending the roof with extra height and width. So, if you’ve been dreaming of turning your attic into a home office or adding a loft-style bedroom, building a shed dormer might be worth the investment for you.

Still wondering “How much does it cost to add a shed dormer?”, at Vertec Roofing, we offer free, no-obligation quotes to properties across Sydney and Canberra. Once we have a thorough understanding of your vision and the scope of the job, we can provide you with a comprehensive price estimate. When you’re ready to enhance your home with a shed dormer, turn to the experts. We are an experienced, qualified and dependable roofing team you can trust. Give us a call on (02) 8007 4366 today, for roof repairsroof replacementsroof restorations and more.

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