A loft conversion is a fantastic way to enhance the value of your home with having to move. A loft conversion is also a great way to convert unused space in your home into a brand new bedroom/bathroom/office.Turn your unused and unwanted empty attic space into a luxurious new living space for you and your family.


On 1st October 2008, and recently, the planning regulations were simplified and as a result the number of householders opting to convert their lofts vastly increased with some households no longer requiring planning permission.

We can help establish the relevant requirements for your property as it may be possible to convert your loft conversion under Permitted Development regulations.

If you would like to add extra living space, increase the value of your home and avoid the stress of moving, we offer loft conversions that are of the highest quality in terms of design, craftsmanship and sustainability.

What Are The Different Types Of Loft Conversion:

There are four main types of loft conversions and the type we recommend for your property will depend on a number of factors – property style, roof height, available space, conservation area, local planning regulations, your budget and needs.

The type of loft conversion that can be done depends on the type of home you live in. As well as the type of home, the area will dictate what kind of planning permission is required and what kind of conversion that we can provide for you. Whatever this is, we can guarantee a conversion that will allow you the most space and the most aesthetically pleasing to suit your needs and planning regulations.

Our main focus is to make all aspects of this process as smooth as possible. We aim to keep everything from consultation to a finished loft conversion in-house to guarantee an easy transition from start to finish, and ensure your satisfaction. One of our team will meet with you to discuss all specifications of the loft conversion and answer any questions you may have. Our supervisor will then provide a cost effective plan for the project requirements you will have discussed.

Dormer L shaped loft conversion
Loft Conversion Dormer Liverpool


A dormer loft conversion is an extension to the existing roof that projects vertically from a sloping roof, creating additional floor space and headroom within the property. Internally, a dormer has vertical walls and a horizontal ceiling. It is the most common type of loft conversion, as the flat roof dormers often add the maximum amount of additional space.

In addition, it is possible to create a gable front and a hipped roof dormer to make it look more attractive, however these types of dormers do not offer as much internal space. Additionally, due to the added complexity, a gable front and hipped roof dormer will cost more to build.


The main styles of Dormer include:

  • Flat-Roof Dormer - A Dormer Conversion with a flat roof

  • Gable-Fronted Dormer - Sometimes called ‘Doghouse’ Dormer

  • Hipped-Roof Dormer - A Dormer Conversion with a hipped roof

  • Shed Dormer - A Single Planed Roof that is pitched at a lesser angle than the main roof

The L-shaped dormer loft conversion is also very popular and is often considered the best way to extend a mid-terrace period property to maximize space as it can give around 40m3 of space or slightly more under planning. 

Advantage: Normally a dormer loft conversion can be constructed without gaining planning permission, although planning permission may be required depending on the specifications.

Hip To Gable Loft Conversion Liverpool
Hip To Gable Loft Conversion Liverpool



The majority of houses that are hip roofed in style tend to have a reasonably small internal volume, so for a conversion to be practical, a hip-to-gable conversion is a smart solution.


This type of conversion involves changing the sloping side of the property to a flat gable end. This increases the size of the loft space, often creating extra space for the staircase.


As this type of loft conversion changes the outline of the roof & planning permissions may well be required. We also specialize in l-shaped hip-to-gable loft conversions.

London Loft Conversion Mansard
L Shaped Mansard Loft Conversion



A mansard loft conversion, named after the 17th-century French Architect Francois Mansard, is situated to the rear of the property.


This type of conversion has a flat roof, with the back wall sloping inwards at an angle of 72 degrees. Windows are usually housed within small dormers.


Mansard loft conversions normally require planning permissions, due to the large changes to the roof shape and structure.

In addition, we specialise in l-shaped mansard loft conversions, which can really open up the space and add even more value to your property. The l-shaped mansard loft conversion works particularly well if you are converting the loft into an open-plan bedroom with en-suite.

Mansard roofs are particularly common in London and other urban areas and can often be seen across whole rows of older terraced properties. Although not regularly seen in suburban areas – flat roof dormers are typically cheaper and simpler to construct – mansard roofs are actually suitable for almost all types of properties. Detached, semi-detached and terraced houses, as well as chalets and bungalows, can all typically house mansard loft conversions.

In terms of aesthetics, the external walls of a mansard extension can be exposed brickwork, rendered or clad with slate or tile – whichever best fits with your property

Velux Loft Conversion Liverpool
Velux Loft Conversion
Velux Style Loft Conversion Liverpool



Velux Loft Conversions are also known as rooflight loft conversions. Velux is the leading manufacturer of roof windows so hence the name.


With this type of project, the roofline is unaltered, as the velux windows are installed fitting flush to the roofline, leaving the original roof structure untouched.


Therefore, planning permission is not generally required, making it an attractive option for many. Also, due to the fact that no large alterations need to be made to the roof, the cost of the conversion generally remains lower.

Velux Loft conversion is actually the most affordable among the different kinds of loft conversions. All that needs to be done is add Velux windows to your loft without changing the roofline. This is best for attics with enough headroom because the floor space can be maximised.

If you would like to know more about these basement conversion types and you want to know which is best for your home, we are open to consultations.

Mersey Builders also offers modern technique in basement construction. If your house does not have a basement but you think having one can increase the space of your home, then you can also count on us. We also excavate and construct new basements according to the demand of our clients.

Mersey Builders offer modern and practical solutions to extending, converting & renovating your living space. Click the button below to book your appointment online, at a time that suits your schedule.

We have experienced specialists in any all types of building works! If you want to find out more about how we could improve your home and pricing please send your question over email and we would be more than happy to answer.



9 Menlove Avenue, Liverpool, L18 1LS