Cost guides · 5 min read
Loft conversion costs in Enfield and Cheshunt
A loft conversion is one of the smartest ways to add a bedroom or home office in Enfield and Cheshunt, because you gain space without losing any garden. Here is what to expect on cost in 2026, and what actually drives the number.
Loft conversion costs by type
| Loft type | Indicative cost (2026) |
|---|---|
| Velux / rooflight (simplest) | £35,000 to £50,000 |
| Dormer (most common) | £45,000 to £70,000 |
| Hip-to-gable + dormer | £55,000 to £80,000 |
| L-shaped dormer (largest) | £65,000 to £95,000+ |
An en-suite, high-end finishes and complex staircases push the figure up. The many Edwardian and 1930s homes across Enfield and Cheshunt often suit an L-shaped dormer, which can give a generous double bedroom plus an en-suite.
Will my loft actually work?
The key checks are head height (you generally want around 2.2 to 2.4 metres at the ridge before conversion), the roof structure (traditional cut roofs convert more easily than modern trussed roofs), and where a staircase can land without ruining the floor below. We assess all of this at the site visit.
What is included
- Structural design and building control sign-off.
- Dormer or roof works, insulation and fire safety.
- A staircase that works with your existing landing.
- Full second fix, en-suite, decoration and finish.
For a figure tailored to your roof and finish, our instant estimator gives you an itemised budget in about a minute, confirmed by a free site visit.
Frequently asked questions
Do I need planning permission for a loft conversion?+
Many are permitted development, but dormers to the front, conservation areas and volume limits can require a full application. We confirm this for your property.
How long does a loft conversion take?+
A typical dormer loft is usually around 8 to 12 weeks on site once design and approvals are done.
Can I stay in the house during the work?+
Usually yes, because most of the work is up in the roof. We protect the rest of the home and keep the site tidy.