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Dormer loft conversion with new roof windows in a North London property
Loft Conversion Specialists in North and West London

Transform your home with Nilo Construction, the trusted experts in loft conversion London.

Whether you're seeking to create a new loft room, convert your loft to a bedroom, or design a stunning attic conversion, we deliver exceptional results tailored to your needs. Our loft conversion company offers solutions for every home, from Velux loft conversions to mansard loft extensions.

Why Choose Nilo Construction
for Loft Conversions?

We are among the best loft conversion
companies in London, offering:

loft conversion nilo construction

Expertise in loft renovation and loft extension London projects.

loft conversion nilo construction

Competitive loft conversion costs, including dormer loft conversion cost London.

loft conversion nilo construction

A team of loft conversion builders near me, skilled in delivering loft extensions near me on time
and within budget.

loft conversion nilo construction

A full range of loft conversion ideas, from basic loft conversions to high-end loft rooms.

loft conversion nilo construction

Transparent pricing with detailed loft conversion quotes for your project.

mansard loft conversion

Mansard Loft Conversion

A mansard loft conversion offers maximum space and is ideal for properties in central and South London. While the mansard loft conversion cost may be higher, the added value to your home makes it worth the investment.

l shaped loft conversion

L-Shaped Loft Conversion

Perfect for larger homes, an L-shaped loft conversion provides a unique design for creating open- plan bedrooms, en suite bathrooms, or even attic renovation ideas like a home office.

Our Loft Conversion Process

Types of Loft Conversions We Work With

Dormer loft conversion with rear extension – maximized space and light

Dormer Loft Conversion

A dormer loft conversion is perfect for increasing floor space and headroom. Popular for homes across South London, Wimbledon, and Bromley, dormers are versatile and ideal for roof conversions.

Velux loft conversion with roof window installation in London home

Velux Loft Conversion

A Velux loft conversion is a cost-effective option that uses roof lights to transform your attic. With minimal structural changes, it’s perfect for small loft conversions or cheap loft conversions.

Hip-to-gable loft conversion with roofline extension for added space

Hip-to-Gable Loft Conversion

A hip-to-gable loft conversion extends your roof, creating a spacious new area. It’s a top choice for those looking to maximize space with a stylish roof extension.

Frequently Asked Questions

  • The cost of a loft conversion London typically ranges from £50,000 to £90,000, depending on the type and complexity. Contact us for a personalized loft conversion quote.

  • Most loft conversions are covered under permitted development rights, so you usually don’t need planning permission. However, larger projects like mansard loft conversions may require approval.

    • Velux Loft Conversion: 4-6 weeks

    • Dormer Loft Conversion: 6-8 weeks

    • Mansard Loft Conversion: 8-12 weeks

  • The 4-year rule lets you legalize unapproved loft conversions by ensuring they meet local council regulations.

  • A mansard loft conversion or converting a truss roof is usually the most expensive because of the major structural changes required.

  • Framed roofs, pre-1960 homes with rafters, and even trussed roofs (with adjustments) work well for loft extensions. Older homes may need structural reinforcements.

  • A practical height is 2.2 metres from floor to ceiling. If your loft doesn’t meet this, adjustments like raising the roof or lowering the floor may be needed.

  • Use a mix of natural and artificial lighting, turn unused areas into functional rooms like bedrooms or studies, and make clever use of eaves for storage or cozy nooks.

  • If your home has a pitched roof and enough headroom, it’s likely suitable for a loft conversion. A professional assessment can confirm this.

  • A loft conversion can increase your property value by up to 20% while giving you additional functional space.

  • A Velux loft conversion is often the simplest and most affordable option, as it involves minimal structural changes.

  • Yes, for most projects, you can stay in your home. We work efficiently to minimize disruption, and larger projects can be planned to suit your needs.

Initial Consultation: We provide a free consultation to discuss your vision and offer loft conversion quotes near me.


Design & Planning: Our loft conversion architect London creates detailed plans tailored to your property.


Planning Permission: Need help with loft conversion planning permission? We’ll handle all applications and ensure compliance with building regulations.


Construction: Our loft conversion builders bring your ideas to life, using high-quality materials and expert craftsmanship.


Handover: After thorough quality checks, we’ll hand over your beautiful new loft room
conversion, ready to use.

Velux loft conversion transformed into stylish workspace in London home
Loft guest room with skylight windows and white interiors
Luxury master bedroom created through L-shaped loft conversion

Ready to Transform Your Loft?

Get your free guide to learn everything about loft conversions near me.

Whether you’re looking for a dormer loft conversion, a Velux loft conversion, or exploring other
types of loft conversions, our team is here to help. Contact us today and let’s bring your dream
space to life!
Let Nilo Construction be your trusted partner for loft extensions London and beyond. Start your
journey to a stunning new space today!

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Maximized Space

Create functional rooms like bedrooms, offices, or storage.

Increased Property Value

Add up to 25% to your home’s value with a roof extension.

Cost-Effective Expansion

Avoid moving costs with a home extension solution.

Energy Efficiency

Modern insulation ensures lower energy bills.

Customized Design

Tailor the space to suit your unique needs with help from our loft specialists near me.

Why Invest in a Loft Conversion?

Our featured projects 

Modern loft bedroom with olive green paneling and integrated lighting – North London conversion project”
Contemporary attic living room with open shelving and wood flooring – part of a dormer loft extension
Open-plan loft kitchen-diner with Scandinavian design – L-shaped loft conversion transformation
Bright and airy attic bedroom with sloped ceilings and pendant lighting –
Spacious loft walk-in wardrobe with mirrored doors and wood flooring – part of full home renovation
Compact but elegant loft bathroom with vertical tiles and glass shower – North London attic project
bedroom with freestanding wardrobe and window seating – London home extension
Contemporary attic living room with open shelving and wood flooring – part of a dormer loft extension
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