Thinking about adding more space to your home without moving? A loft conversion might be the perfect solution! It’s one of the most popular home improvements in the UK — especially in cities like London where space is limited and house prices are high.
But before you dive in, it’s important to understand the different types of loft conversions available, their costs, and what kind of property they suit best. Let’s break it all down in simple terms. 😊
🛏️ Why Convert Your Loft?
- Add an extra bedroom, office, or bathroom
- Increase your property value (up to 20%!)
- Save money compared to moving house
- Use dead space that’s already in your home
Now let’s look at the 4 main types of loft conversions:
✅ 1. Velux (Rooflight) Loft Conversion
💡 Best for: Homes with lots of existing loft height
💰 Cost: £25,000 – £35,000
A Velux conversion is the simplest and cheapest option. It involves installing roof windows (Velux windows) into the existing roof slope — no major structural changes are needed.
✔ Pros:
- Least disruption
- Budget-friendly
- Often no planning permission needed
❌ Cons:
- Less usable space (no dormer headroom)
- Works best in high-pitch roofs
✅ 2. Dormer Loft Conversion
💡 Best for: Most UK terraced or semi-detached homes
💰 Cost: £40,000 – £55,000
A dormer conversion involves building a box-shaped extension that juts out from the slope of the roof. It adds headroom, floor space, and natural light.
✔ Pros:
- Popular choice (especially in London)
- Adds a lot of usable space
- Great for adding an en suite bathroom
❌ Cons:
- External changes visible (might not suit conservation areas)
- More expensive than Velux
✅ 3. L-Shaped Dormer Loft Conversion
💡 Best for: Victorian/Edwardian terraced houses
💰 Cost: £55,000 – £70,000
An L-shaped dormer extends two sections of the roof, forming an “L” shape. This type gives you enough space for a full bedroom + bathroom or office — almost like a small flat!
✔ Pros:
- Maximises space
- Perfect for older London homes
- Ideal for adding multiple rooms
❌ Cons:
- Higher cost
- More complex design and construction
✅ 4. Mansard Loft Conversion
💡 Best for: Adding serious space in city homes
💰 Cost: £65,000 – £90,000+
A mansard conversion is the most dramatic — it involves changing the whole shape of the roof to create a flat roof with a steep back wall. It’s usually at the rear of the property.
✔ Pros:
- Huge amount of space
- Looks more like part of the original house
- Great for high-end properties
❌ Cons:
- Planning permission usually required
- Most expensive option
- Longer construction time
📐 Bonus Tip: Do I Need Planning Permission?
- ✅ Permitted Development Rights often cover dormer and Velux conversions.
- ❗ Mansard and some L-shaped dormers may require planning permission.
- ✅ You always need Building Regulations approval for safety and structure.
🧱 So… Which One Is Right for You?
| Conversion Type | Space Added | Cost | Best For |
|---|---|---|---|
| Velux | Minimal | ££ | Budget builds, tall lofts |
| Dormer | Moderate | £££ | Most UK homes |
| L-Shaped Dormer | Large | ££££ | Period terraced houses |
| Mansard | Maximum | £££££ | High-end or city homes |
✨ Final Thoughts
A loft conversion is an amazing way to boost your space and your home’s value. Whether you want a cosy guest room, a new master suite, or a peaceful home office, there’s a loft conversion type that’s perfect for your home — and your budget!
Need help choosing the right one for your property? Or looking for a quotation tailored to your home in London? Drop a comment or get in touch — happy to help! 😊
