June 20 2025 0Comment
Roofing3 SDS Builders & Decorators Ltd

What Type of Loft Conversion is Right for My Home?

Posted by SDS Builders & Decorators Ltd In Blog

Thinking of expanding your living space without moving house? A loft conversion is one of the most effective ways to add a new bedroom, home office, or en suite without extending your home’s footprint.

But with several different types of loft conversions available, how do you know which one is right for your property – and your budget?

In this guide, we’ll walk you through the most common types of loft conversions available in the UK, explain the pros and cons of each, and help you decide which option best suits your home.

Why Convert Your Loft?

Loft conversions are popular for good reason. They can:

  • Add significant value to your home (up to 20%)
  • Make better use of unused space
  • Avoid the cost and stress of moving
  • Provide stunning views and natural light
  • Be completed quicker than other types of extensions

However, the type of loft conversion you choose will depend on your roof shape, budget, planning constraints, and what you want to use the space for.

1. Velux (Rooflight) Loft Conversion

Best for: Homes with plenty of existing roof height and a tight budget

A Velux conversion (also called a rooflight conversion) is the simplest and most cost-effective option. It involves fitting roof windows into the existing slope of your roof, with no major structural alterations.

Pros:

  • Budget-friendly
  • Less disruption during the build
  • Usually falls under permitted development
  • Fast to complete

Cons:

  • Less usable floor space
  • Limited headroom in some areas

Ideal for a guest bedroom, study, or kids’ playroom in homes with a high-pitched roof.

2. Dormer Loft Conversion

Best for: Most semi-detached and terraced homes

A dormer conversion involves extending out from the slope of your roof to create additional headroom and floor space. It’s the most popular type of loft conversion in the UK.

Pros:

  • More usable internal space
  • Can accommodate an en suite
  • Typically allowed under permitted development
  • Adds strong resale value

Cons:

  • More costly than a Velux conversion
  • Flat-roof dormers can be less visually appealing (unless well designed)

Perfect for homeowners who want a master suite or a large home office.

3. Hip to Gable Loft Conversion

Best for: End-of-terrace and semi-detached houses

If your home has a hipped roof (sloped on all sides), a hip to gable conversion extends the roof line to create a vertical gable wall, significantly increasing internal space.

Pros:

  • Greatly increases floor space
  • Can be combined with a dormer for maximum impact
  • Adds strong long-term value

Cons:

  • Higher build cost
  • May require planning permission depending on location

A popular option in East and West Sussex where many homes have traditional hipped roofs.

4. Mansard Loft Conversion

Best for: Urban homes where planning permission is achievable

A mansard conversion is a full-width extension of the roof, usually built at the rear of the property with a flat roof and a steep rear wall. It offers the most internal space but requires more extensive structural work.

Pros:

  • Maximises floor space and natural light
  • Allows for multiple rooms (e.g. bedroom + en suite)
  • Adds considerable property value

Cons:

  • Almost always requires planning permission
  • Longer build time and higher cost

Ideal for period townhouses or properties in conservation areas with planning approval.

Which Loft Conversion is Right for You?

Here are a few questions to help guide your decision:

  • Do you have sufficient head height? You’ll need at least 2.2m at the highest point for most conversions.
  • Do you live in a conservation area or listed building? This can affect planning permission.
  • What’s your budget? Velux conversions start from around £25,000, while mansards can exceed £60,000.
  • What will the space be used for? A luxury bedroom with en suite may require more space and natural light.

At SDS Builders, we offer a free home survey to assess your loft space and recommend the most suitable type of conversion for your home and goals.

Why Choose SDS Builders?

With over 20 years’ experience in loft conversions across Surrey and Sussex, SDS Builders are your trusted local experts. We offer:

  • Full design-and-build service
  • Planning advice and permissions handled
  • Clear, fixed-price quotes
  • Skilled trades and quality workmanship
  • End-to-end project management

We’ll guide you from the initial design through to completion, ensuring your new space is built to the highest standards – with minimal disruption to your home life.

Ready to Unlock Your Loft’s Potential?

Speak to our friendly team today and find out which type of loft conversion is right for your property.

📞 Call us for a free consultation or 📩 Request a quote online

FAQs: Choosing the Right Loft Conversion

How much does a loft conversion cost?

Costs range from £25,000–£65,000+, depending on the type of conversion and level of finish. We’ll provide a tailored quote after a site visit.

Will I need planning permission?

Many loft conversions fall under permitted development, but some (like mansards or hip to gables) may require planning permission. We’ll advise you on this.

How long does a loft conversion take?

Most loft conversions take 8–12 weeks from start to finish.

Can every loft be converted?

Not always. You’ll need sufficient headroom, structural viability, and access. We’ll carry out a full assessment during your consultation.

Can I include a bathroom in my loft conversion?

Yes – most types of conversion can accommodate an en suite or full bathroom, provided plumbing is feasible.