Loft conversion process – A step-by-step guide

Home office with VELUX roof window, world map on wall, and man working at desk.
You've decided to convert your loft. So, where should you start? Converting an empty attic takes time, but it's definitely worth it. It adds value to your property and increases your living space. It's a brilliant way to create an extension without building something entirely new.
Key takeaways
  • Before you start planning your loft conversion, calculate the useable area so you know how much space you have to work with.
  • How long the loft conversion takes will depend on the type of framework you have under the roof.
  • If you’re not sure which type of roof windows will suit your loft space, get in touch with our installation service team.

Step-by-step process

A loft conversion can seem like a daunting process. Let's go through it step-by-step. There are a few things to investigate in order to make the process easier:

  • Know the dimensions of your house - length and width
  • Know what type of construction your roof has
  • Know your budget
  • Know if you need specific authorisations

1. Calculate the usable area of your attic

Before you start planning, you should know how much living space you have at your disposal. ‘Living space’ is 1.80 + m height, so measure the width and length of your attic to calculate the area and then figure out how much of this will be living space.

2. Identify the type of framework you have under the roof

It's important to inspect your attic area and identify what type of framework you have under the roof. All attics are convertible, but depending on the framework, the duration of the conversion project varies. The most frequent framework is a traditional attic used for storage. If in doubt, you can ask a professional loft converter / builder to come and take a look.

3. Configure the right VELUX solution for your rooms and your budget

Determine the cost of your loft conversion. With a few clicks, you can find out the costs of your project. You are always welcome to contact one of our VELUX experts to help you find the best solution for your project.

4. Complete your administrative procedures

Depending on the nature of your project, certain authorisations will be required. There are a number of different websites that can help you with this information, such as:

Converting an empty attic adds value to your property and increases your living space. It's a brilliant way to create an extension without building something entirely new.


VELUX Editorial team



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