Roof Lantern Cost: What to Expect in London

A well-specified roof lantern is one of the best investments you can make in a London kitchen extension. It adds natural light, ceiling height, and visual drama — and in the right property, it adds more to the value than it costs.

What This Guide Covers

• Roof lantern cost: £2,800–£10,000+ depending on size and material
• Aluminium roof lanterns: most popular choice in London due to slim sightlines
• Self-cleaning glass: an extra £150–£300 but worth it for hard-to-reach lanterns
• Delivery and installation typically takes 1–2 days
• Most popular in Richmond, Wimbledon, Chiswick, Chelsea and Kensington extensions

Introduction

London homeowners face unique challenges when it comes to glazing — from period properties with sash windows in conservation areas, to modern developments requiring structural glass installations. Getting the right advice before you commit can save you significant time and money.

At BuilderFix Glazing, we have completed thousands of glazing jobs across Greater London and Surrey — from emergency repairs in Kensington and Chelsea, to bespoke walk-on glass installations in Mayfair and Belgravia. This guide is based on real experience and the questions our customers ask us most often.

What Does This Typically Cost in London?

Costs vary depending on the type and size of work, the glass specification, frame material, and access. As a general guide, always obtain a free written quote before committing — this protects you from unexpected charges.

At BuilderFix Glazing, we provide free, no-obligation written quotes for all work. Our prices are transparent and fixed before we start — no surprises on the invoice.

What to Ask When Getting a Quote

• Is the price fixed, or could it change once work starts?
• What glass specification is included?
• Are all fixings, sealants and finishing included?
• What compliance documentation will I receive?
• What happens if there is an issue after completion?