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Mansard vs Dormer Loft Conversions: All you need to know

January 29, 2024

Are you considering expanding your living space and adding value to your home? A loft conversion is a fantastic option that can help you achieve both.

In the UK, two popular choices for loft conversions are Mansard and Dormer styles. In this blog, we'll help you to see which option is fitting with your needs and budget.

Understanding Mansard Loft Conversions

Have you heard of Mansard loft conversions before?

They're a great way to extend the slope of your roof and create a box-like structure that provides maximum headroom. With this type of conversion, you can have more space for your family or create an extra bedroom. So, it not only has a practical purpose, it could also modernize the overall look of your property. It's perfect for growing families or those who want to add a touch of luxury to their home.

Mansard Loft Conversion Benefits

  1. Maximizes Headroom: The gentle slope of the Mansard roof ensures ample headroom throughout the converted space, ensuring comfort and easy movement.
  2. Versatile Design Options: The flat section of the Mansard roof allows for creative interior designs, letting you customize the space to your liking.
  3. Expand Your Living Space: Thanks to its generous floor area, a Mansard conversion can house multiple rooms, like bedrooms, bathrooms, or even a home office.
  4. Boosts Property Value: Loft conversions, especially Mansard ones can significantly increase your home's value, which can be a significant advantage if you intend to sell in the future.

Loft conversion design of a bathroom of detached house in Lewes

Loft Conversion Design: Practical Options

A Dormer loft conversion involves extending the existing roof vertically, creating additional space with a flat or slightly pitched roof. This type of conversion is more common due to its versatility and cost-effectiveness. Dormer conversions are suitable for various roof types and can blend seamlessly with your home's architecture.

Mansard Roof Vs Dormer Roof

When you're deciding between a Mansard roof and a Dormer roof for your loft conversion, consider the features of each roof extension options.

A Mansard roof extends the slope of your existing roof, creating a box-like structure that maximizes headroom and interior space. A Dormer roof is a vertical extension with a flat or slightly pitched roof that provides more room and natural light. For hip roofs, a hip-to-gable extension is often used to create more space by changing the hip end to a gable end.

It's worth noting that when it comes to Dormers , two small dormers are often better than one large one, as long as they are far enough apart.

However, in certain locations, like Conservation Areas or where front dormers would disrupt the area's unique character, front dormers may not be accepted, especially if no other front dormers exist in the same street scene. These considerations play a crucial role in making the right choice for your loft conversion.

Dormer Loft Conversion Advantages
  1. Cost-Effective: Dormer conversions are a cost-effective option compared to other types of loft conversions, which makes them a popular choice for homeowners who want to save money.
  2. More Natural Light: Dormer structures come with windows that allow abundant natural light, creating a bright and airy atmosphere.
  3. Planning Permission: Dormer conversions often fall within permitted development rights, making the planning permission process easier and less time-consuming.
  4. Additional Headroom: The vertical roof extension provides extra headroom, making it suitable for rooms requiring higher ceilings, like a master bedroom or a home gym.
Cost of Loft Conversion

Want to know how much a loft conversion costs? Well, it depends on many factors like location, size, complexity, and the conversion type. But as a general guideline, you should expect to spend between £20,000 to £50,000 or more for a standard Mansard or Dormer loft conversion.

At STAAC, we offer a free quote for your loft conversion or any other project using our simple planning calculator. If you already have construction services in mind for a loft in your area, we have an offer for that too!

Planning Permission for Loft Conversion Types

You should keep in mind the planning permission rules for your loft and roof alterations in your Local Council.

Usually, Dormer loft conversions can be done under permitted development rights if they meet certain criteria. But Mansard loft conversions may need planning permission because they involve more significant alterations to the roof's shape. To ensure you don't face any issues, our team can guide you about which loft conversion option will have possibilities for a "green light" by knowing all the necessary regulations by Local Authorities. Obtaining planning permission can add time and cost to your project, so it's better to do it side by side with us.

Our design with mansard roof approved for a furniture retail store in Worthing

Choosing Your Loft Conversion

When deciding between a Mansard and Dormer loft conversion, consider your specific requirements, budget, and local authority guidelines. It's a good idea to consult with a reputable loft conversion specialist or architect who can provide valuable insights to help you make the best choice for your home.

Whether you choose a Mansard or Dormer loft conversion, you'll be turning your underutilized roof space into a valuable asset. Both styles have their unique advantages, so weigh them against your needs and preferences. By selecting the right loft conversion type, you'll not only enhance your living space but also add value and functionality to your home.

So, do not hesitate —unlock your property's full potential with STAAC Design and Build or you can book a discovery call with our loft conversion specialists.


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