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Loft Conversions & Extensions

More space without moving house. We build loft conversions, extensions and general building works, whether a simple Velux conversion or a full dormer. Because we're roofers first, the roof over your new room is done exactly right, so there's no gap between the builder's work and the roofer's.

Room to Grow, Without the Upheaval

Outgrowing your home doesn't have to mean the cost and stress of moving. A loft conversion or extension turns unused space into a bedroom, study or playroom. As a result, you get both living space and real value added to your property.

The roof is the part most builders get wrong, and it's the part that matters most. For example, a Velux conversion needs the rooflights flashed properly, while a dormer needs its own covering and lead detailing tied neatly into the existing roof. Because we're roofers with decades of experience, we handle the structure, the covering, the dormers and the rooflights ourselves. So your new space ends up warm, watertight and finished to a standard that lasts.

Many Hertfordshire homes from the 1930s onwards have roof timbers that were never designed to carry a full room, so the structural work has to come first, before the covering goes on. Because we handle both the carpentry and the roofing ourselves, there's no gap between trades for water to get in during the build. As a result, your loft stays weathertight throughout the project, not just once the last tile is on. So there's one firm to call if anything needs checking later, not two trades pointing at each other.

What We Build

Rooflight conversions

Keep the existing roofline and flood the loft with light through well-fitted Velux windows.

Dormer conversions

Add headroom and usable floor space with a properly built, watertight dormer.

Extensions

Single and two-storey extensions, finished with roofing that matches the existing home.

Building works

General building work carried out to a high standard alongside the roofing.

Roofers First

The roof over your new room is built by roofers who do this every day.

Light & Watertight

Rooflights and dormers fitted and flashed properly for a warm, dry space.

Family Firm Since 1947

Decades of experience and a reputation we protect on every project.

Loft & Extension FAQs

Do I need planning permission for a loft conversion? +
Many loft conversions fall under permitted development and don't need full planning permission, but there are limits on volume, materials and where you can build — and Building Regulations always apply. We'll talk you through what your project needs before any work starts.
How much value does a loft conversion add? +
A well-built loft conversion is one of the most cost-effective ways to add both space and value to a home, often adding a significant percentage to its worth as well as a whole extra room. The exact figure depends on your property and area.
What types of loft conversion do you offer? +
From rooflight (Velux) conversions that keep the existing roofline, to dormer conversions that add headroom and floor space. We'll advise which suits your roof, your budget and the space you want to create.
Do you install Velux / roof windows? +
Yes — rooflights are a big part of loft and roof work, bringing natural light into converted lofts and rooms in the roof. We fit and flash them properly so they're completely watertight.

Loft Conversions & Extensions Across Hertfordshire & the Lea Valley

We carry out loft conversions and extensions for homeowners across Hoddesdon and the surrounding towns:
See all areas we cover →

Thinking of Converting Your Loft?

Free, no-obligation quote on loft conversions and extensions across Hoddesdon and Hertfordshire.
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Written by the Bliss Roofing team. Last updated .