
A Dormer loft conversion involves installing a box shaped structure into the pitched roof (sloped roof) of your home. The right-angles of the dormer create a flat rather than sloped roof, giving you ample headroom and classic room shape dimensions.
Full Answer
What can you do with a dormer loft?
It can be yours with a dormer loft conversion Loft conversions with dormers are a great way to create the extra space you need in your home.
How much does a dormer loft conversion cost in London?
A flat roof Dormer is one of the most cost-effective loft conversions as it requires less changes to the roof structure. The average price of a Dormer conversion in London is currently £35,000 to £40,000. What space can I create with a Dormer loft conversion?
What is a roof dormer conversion?
A roof dormer is a box-like structure that projects from a property’s existing roofline. The vertical walls and windows are a great way to bring extra headroom and daylight into a loft space. Dormer conversions are potentially suitable for almost any type of house, including terraced, semi-detached and detached.
Does a rooflight conversion add extra space to a loft?
A rooflight conversion doesn’t, though, add any extra space to the loft. The existing volume is all there is. The conversion that can make your loft larger? A dormer loft conversion. Dormer windows project from the existing roof, and they increase the volume of the roof space with full headroom, as well as introducing daylight to the loft area.

What is the difference between a loft conversion and a dormer?
What is a dormer loft conversion? Roof dormers are a popular type of loft conversion that can add valuable extra living space to your home. A roof dormer is a box-like structure that projects from a property's existing roofline.
How much does it cost to put up a dormer?
Adding a dormer costs $12,000 on average—with a range between $2,500 and $30,000—or about $115 per square foot. You can choose from a variety of dormer styles, such as flat, shed, gable, or eyebrow.
What is the purpose of a roof dormer?
A dormer is like a small room with a window that projects out vertically from the rest of a sloped roof. When you convert attic space into living space, a dormer allows cross ventilation, brings in natural light, and adds architectural style.
Do you need permission for a dormer?
Dormer windows, like dormer conversions, are usually classed as permitted development the same as roof windows and skylights. So, you won't need planning permission for dormer windows unless they exceed certain measurements or if you live in a listed building or conservation area.
Do dormers add value to house?
The answer is, Yes. a dormer adds value to your house without any doubt and according to the latest research, a lot more people are adding extensions to their houses then before. It is estimated that almost 20% of house value is increased by adding a dormer. It is a lot of money if you want to sell your house.
How long does a dormer loft conversion take?
four to six weeksDepending on the overall size and roof work requirements, a dormer loft conversion may take four to six weeks to complete. Hip to gable end conversions may also take up to 6 weeks to complete.
Can you put a bathroom in a dormer?
It took four years of making do before the couple decided to expand. Adding a dormer would give them space for both a master closet and bath with a large tub, shower, and a pair of double-hung windows that would replicate those on the house's two existing dormers.
Do I need an architect for a dormer?
It's not necessary to have drawings of a dormer. It's enough the builder to keep good common building practice and your dormer will last for as long the roof lasts. Other problem might be that you might need planing permission and from there proper legal plans accepted by the local authorities.
How much does a dormer cost UK?
A small dormer loft conversion typically costs around £2,000 to £7,000, while a mid-range dormer would be priced at £10,000 to £30,000. A larger-scale loft conversion could cost anywhere from £40,000 to £60,000 depending on the type of installation chosen, and other customisations (roof type, en-suite conversion, etc.)
How long do dormer roofs last?
Some people say 10-15 years is the life span but that's not to say its all ok, maybe just get the roof stripped and felted again. Any joists that need changing you could have changed but if nothing else you can rest assured of no leaks then.
Can I put stairs to my loft?
Building regulations stipulate that if the loft is to be turned into a bedroom, bathroom, study or playroom, it must have a permanent staircase. Thankfully there are plenty of staircase options available to fit whatever space you have, that look great and won't blow your budget.
Where do you put stairs for a loft conversion?
The highest part of the loft, in line with the roof ridge, is an ideal location for a staircase to land, therefore. However, this is also the most useful part of the loft because of the height, and the result of locating the staircase here may not be the most spacious conversion possible.
How do you build a dormer on an existing roof?
13:3223:12Build a Pitched Roof Dormer in a Day - Extension #34 - YouTubeYouTubeStart of suggested clipEnd of suggested clipWith these angled studs we supported the existing rafters that were coming through because theMoreWith these angled studs we supported the existing rafters that were coming through because the ceiling height in this dorm was slightly lower than the main house partly because of how the flitch.
Can you buy prefab dormers?
A: Yes, search for Handy Home Products on HomeDepot.com and order it along with the installed shed. Our installers will install it when they build the shed.
How much does a dormer cost UK?
A small dormer loft conversion typically costs around £2,000 to £7,000, while a mid-range dormer would be priced at £10,000 to £30,000. A larger-scale loft conversion could cost anywhere from £40,000 to £60,000 depending on the type of installation chosen, and other customisations (roof type, en-suite conversion, etc.)
What is the difference between a gable and a dormer?
A gable window is a flat window on the flat end of the house. A dormer window is a protruding window coming out of the roof of the house. There aren't many different types of gable windows, but there are a lot of dormer windows.
What is a dormer loft conversion?
If your plan is to turn a loft from storage space to useful additional room (s), there are a few options on offer, including a dormer loft conversion. So you can appreciate the plus points of going for this type of conversion, we’ll start with what a basic loft conversion would provide.
How much does it cost to convert a dormer loft?
The good news is that it’s a cost-effective way to make your home bigger. You can expect to pay from around £35,000 for a dormer loft conversion. Bear in mind that your total bill will be influenced by where you live and also how your loft is going to be used. Fitting out a bathroom, for example, will require a bigger budget than creating living space.
What dormer window options are there?
The dormer windows of a loft conversion can be single, and you might include one or two of these in a design. It’s also possible to have a full width dormer that maximises the space available in the loft.
How long does a dormer loft conversion take?
Another big benefit of a dormer loft conversion project is that it can be achieved quite quickly. Generally, you’ll be looking at a timescale of five to six weeks once the builders or conversion company start.
Why do people convert to Dormer lofts?
Dormer loft conversions are a popular choice because they’ll make the loft more spacious but the building work involved is still relatively simple. Of course the other tasks involved with the more basic rooflight conversion will be required, too.
Do dormers matter in a loft?
Size does matter, too in the case of a loft project. Although dormers add to the volume of the loft, its dimensions still need to be generous enough to ensure you’ll end up with a useable room in the end.
Do dormers have a flat roof?
Generally dormers have a flat roof, but those with pitched roofs – gabled dormers – might be required by planners if you live in a conservation area.
What is a Dormer loft conversion?
A Dormer loft conversion involves installing a box shaped structure into the pitched roof (sloped roof) of your home. The right-angles of the dormer create a flat rather than sloped roof, giving you ample headroom and classic room shape dimensions.
What are the different types of Dormer loft conversion?
There are a variety of Dormer loft conversions to suit your home. The main ones are:
How can I be sure my Dormer loft conversion does not require planning permission?
If you want to be certain that your loft conversion doesn’t require planning permission, we recommend applying for a Lawful Development Certificate (LDC) from your local authority.
How much does a Dormer loft conversion in London cost?
The cost of your Dormer conversion depends on a variety of factors, such as your roof size, materials and labour needed, and level of interior finish. A flat roof Dormer is one of the most cost-effective loft conversions as it requires less changes to the roof structure .
Why choose us to design and install your London Dormer loft conversion?
35+ years constructing quality Dormer conversions in London and South east
What is Dormer loft?
Dormer loft bedroom ensuite: This is one of the most popular use of Dormers creating a spacious new bedroom, en suite bathroom and even a dressing room area. It is ideal for creating a luxurious master bedroom on the top floor and children’s bedrooms on the second floor.
What is a side dormer?
Side Dormer – These Dormers are built into the side facing roof slope. They are ideal for adding space to a property where the roof ridge runs from the front to the back of the home.
Disadvantages of Dormer Conversion
If a home has had a dormer conversion, it is usually obvious. This is because dormers extend from the existing roof, sometimes having an unnatural appearance. If you really need your loft conversion to look as natural as possible, then you may want to consider a hip to gable type of conversion.
Popular Dormer Loft Conversion Rooms
The additional space that dormer loft conversions provide is normally used for extra bedrooms, a bathroom, or both. Other rooms may include a study or nursery. If you have the space it is usually a good idea to consider adding an en-suite or separate dressing room attached to a master bedroom.
What is a dormer conversion?
What is a dormer loft conversion? A dormer loft conversion is when a box shaped structure is added onto a pitched roof, creating walls that sit at a 90 degree angle to the floor. This helps to expand not only your headspace, but floorspace too.
What is a dog house dormer?
Dog-house dormer: a dormer with a roof that has two pitched sides like your classic dog house. L-shaped dormer: touched on above, this dormer has two parts that form an L shape. Hipped roof dormer: similar to a dog-house dormer, but with three sides instead of two.
How are neighbours affected by dormers?
Your neighbours are affected by your dormer through overlooking or overshadowing.
Do bats live in a dormer?
Your neighbours are affected by your dormer through overlooking or overshadowing. Bats live inside your loft. As a protected species, you need a special license to disturb their home. If your project does fall within permitted development, make sure you apply for a Lawful Development Certificate.
Do dormers require planning permission?
These rights entitle you to extend your home without the need for planning permission, providing your perspective addition follows a strict set of guidelines.
The Benefits of Dormer Loft Conversions
As mentioned above, the flat roof dormer conversion is the cheapest to construct and offers more space so this is the most popular choice.
Areas We Cover
Interloft provide a professional and reliable service throughout Yorkshire and in particular, the Harrogate area. So, if you're looking for a loft conversion company in Harrogate then don't hesitate to contact us on 0800 999 4034 to discuss our free loft design and planning service.
