Everything You Need To Know (Read Below)

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Dormer Loft Conversions

What Is A Dormer Loft Conversion?

A Dormer loft conversion is when a loft space is converted from being a general unusable space into a usable room or pair of rooms at the top of the property (in the loft/attic) and there is a raised space known as a “dormer”.

Example Of A Dormer:

Example Of A Dormer

Example Of A Dormer

As you can see from the image, a dormer is a raised area built into the roof that is designed to both extend and maximise the amount of usable space in a loft (the dormer is built as part of the loft conversion process).

Why Should I Consider A Dormer Loft Conversion?

You should consider this type of attic conversion for the following reasons:

1) Dormer conversions are an excellent way to maximise the space in your property, they enable the owners of a property to add additional rooms to a house.
2) Asthetics – Dormer loft conversions are great looking additions to a property both internally and externally.
3) Significant Increase To The Value Of Your Home – Attic conversions can increase the value of your home by more than 20%, when you take into account a £400,000 property, that could be an increase in value in excess of £80,000, when it comes time to sell that property as you may imagine that will significantly increase the final sales price, making it a sound investment for people looking for ways to extend and grow not only their property but the value of that property.
4) Dormer Loft conversions take a moderate period of time to complete – usually around 6-8 weeks is generally sufficient to complete the work to the point where the attic is ready for occupation.
5) Versatile – You can do virtually anything with the loft space, you can add in extra bedrooms, a bedroom with en suite, a study room or a home office, a play area, observatory, home gym or just a nice space for you to take some “chill out time”, the possibilities are only limited by your imagination.

What Are The Advantages Of Dormer Lofts?


1) Increase Space
2) Increase The Monetary Value Of The Home
3) Relatively Fast Build Times
4) Designing Phase Is Not Overly Complex
5) Suitable For A Range Of Different Types Of Property
6) Impressive Looking Once Completed
7) Means You Can Add Bedrooms & Bathrooms
8) Increase In Natural Light In The Property
9) Highly Popular Type Of Attic Conversion
10) Very Often Falls Within The Criteria Of “Permitted Development”.

Disadvantages Of Dormer Lofts?

1) Price Is Usually Marginally Higher Than A More Standard Velux Conversion
2) Slightly Increased Build Time As Opposed To A Velux Conversion
3) Dormers’ Above A Certain Size May Need Planning Permission (more on this here)
4) Some People Prefer The Style Of Other Loft Conversion Types Over The Dormer (this is more a matter of personal preference)

Will I Need Planning Permission For Dormer Loft Conversion?

Generally planning permission will not be needed for this kind of project/conversion, however there are certain circumstances which may create a need for planning permission.

Here is the criteria for permitted development (if you exceed or are outside of this criteria you may need planning permission):

  • A volume allowance of 40 cubic metres, (there is) additional roof space for terraced houses*
  • A volume allowance of 50 cubic metres (there is) additional roof space for detached and semi-detached houses*
  • No extension beyond the plane of the existing roof slope of the principal elevation that fronts the highway
  • No extension to be higher than the highest part of the roof
  • Materials to be similar in appearance to the existing house
  • No verandas, balconies or raised platforms
  • Side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor
  • Roof extensions not to be permitted development in designated areas**
  • Roof extensions, apart from hip to gable ones, to be set back, as far as practicable, at least 20cm from the original eaves
  • The roof enlargement cannot overhang the outer face of the wall of the original house.

What This Means In Simple Terms

Basically you would not require planning permission unless:

A) Your dormer is larger than the limits mentioned above (or if you wish to extend above the current highest part of the roof)
B) You wish to use materials externally that are not uniform or similar with the existing materials on the rest of the house
C) You wish to include a veranda or balcony on your dormer

Remember: If your particular project requires planning permission:

    Don’t worry.

Planning permission is attainable and should you decide you want to work with us on your loft, we can help you obtain planning permission.

Building Regulations?

Building regulations always apply to projects of this nature, this is not something to worry about and we can assist you in gaining approval for building regulations, this is not a complex process and we are capable and happy to help you.

Building regulations with loft conversion are designed to ensure that the process being followed, the method and the end structure will be safe, structurally sound and fit for purpose, it’s as much to protect people as it is to regulate building activities. (Nothing to worry about, we can help).

Will I Need An Architect?

You may or may not need an architect for your project, if so we can help with architectural services, if you already have an architect this is also fine with us, we can work with you regardless.

Ideas For Dormer Loft Conversion

There are a range of different dormer lofts you can have built and installed onto your property, here are some ideas to inspire and encourage:

1) Bedroom Dormer Conversion

Bedroom Dormer Example

Bedroom Dormer Example

You can have a spectacular bedroom added into a dormer conversion – one idea.

2) Office Dormer Conversion

Office Dormer Loft Conversion

Office Dormer Loft Conversion

Some people choose to have an office built into the loft of their home, this is a great idea for anyone running a home business or people who work from home, or even people researching their family tree or other intellectual pursuits.

3) Bedroom With En Suite

Another highly popular idea for dormer lofts is the inclusion of a bedroom with en suite:

Bedroom With En Suite Dormer

Bedroom With En Suite Dormer

As mentioned above, not only is this an excellent choice in both function and appearance, but it adds a large increase in value to your property.

There are also a number of other things you can have added into your dormer loft, a conversation with one of our specialists during a free assessment & quote would be a good idea to find out more, we would be delighted to help you.

If you would like our help with a project, or a free quote and assessment on a no obligation basis, feel free to contact us using the form at the top of the page to request a quote.

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