Rooflight Loft Conversion
What is a Rooflight Loft Conversion?
A rooflight conversion (also known as a roof light or Velux loft conversion) is a simple, cost-effective type of loft conversion that installs skylight windows (rooflights) into the existing roof slope to bring in natural light and ventilation, without altering the roofline or adding external extensions.
Frequently Asked Questions
We hope this page provides clear and helpful answers for those considering a loft conversion who may have numerous questions about the process; we are here to make your decision as straightforward and informed as possible.
1
How much value does a rooflight loft conversion add to my home?
A rooflight loft conversion typically adds 15-20% to your home's value in the South East UK (often £50,000–£100,000+ depending on your property's current worth and whether it adds a bedroom + en-suite), frequently recouping or exceeding the £30,000–£50,000 cost through increased appeal to buyers.
2
Is my house suitable for a rooflight loft conversion?
Your house is likely suitable for a rooflight loft conversion if it has 2.2 metres head height and a pitched roof, but fitting the staircase can be a real struggle in smaller properties—bigger homes generally make this type of conversion much easier.
3
How much does a rooflight loft conversion cost in Sussex?
In Sussex, a rooflight loft conversion typically costs £30,000–£50,000 in 2026 for a standard fully finished project (around 20–35 m², including Velux windows, floor strengthening, insulation, stairs, and basic finishes), though prices vary depending on the size and specification — smaller or basic ones can start from £25,000–£35,000. Contact us for a free, no-obligation quote tailored to your property!
4
How long does a rooflight loft conversion take ?
A rooflight loft conversion typically takes 4–8 weeks, with smaller or simpler jobs often completed in 4–6 weeks and larger or more complex conversions (e.g., adding en-suites or extra reinforcements) extending to 6–8 weeks or slightly more, depending on size, specification.
5
Do I need planning permission for a rooflight loft conversion?
In most cases, you do not need planning permission for a rooflight loft conversion in the UK (including Worthing), as it usually falls under permitted development rights provided the rooflights don't protrude more than 150mm beyond the roof plane and other standard conditions are met—though you should always check for conservation area, listed building, or Article 4 Direction restrictions with your local council.
6
Can I add an ensuite to my rooflight loft conversion?
Yes, you can add an en-suite to a rooflight loft conversion, but it's the most difficult type due to limited space constraints—though the larger your property, the easier it becomes to fit an en-suite in comfortably.
7
What are the main advantages over other types like dormers?
It's more cost-effective, quicker, less disruptive, causes minimal external changes (great for conservation areas), and floods the space with natural light.
