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Extension
Extension
Dormer
Dormer
Roof addition
Roof addition
Swimming pool
Swimming pool
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ProcessAbout usContact
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Prefab dormer with black cladding on a tiled roof in the evening sun

Dormer

Turn your attic into a real room

1–2 days

To install

Made to measure

For any roof

10 years

Warranty

Bright attic room under a prefab dormer with a wide run of windows

More headroom, more light.

Your attic turns from storage into a real bedroom, home office or bathroom — spacious, bright and comfortable all year round.

The benefits of a prefab dormer

Installed within a month

From sign-off to handover in weeks — not months.

5 days on site

Placed by crane and fully finished, with minimal disruption.

10-year warranty

On the structure — peace of mind, in writing.

Sustainable

Fully insulated and efficiently built in our workshop, with less construction waste.

Frequently asked questions

The price depends on the width, the finish and your roof. Request a quote and you'll quickly receive a tailored price — fixed and with no surprises.

A dormer at the rear of the house is often permit-free; at the front a permit is usually required. We'll advise you on this with your quote.

Because the dormer comes prefabricated from our workshop, the work on the roof stays short: installation and finishing are often done within one to two days.

Yes — we match the colours, frames and finish to your home, so the dormer looks as if it was always there.

Ready for more space in your attic?

Request a no-obligation, tailored quote. We reply within one working day.

Interior beneath a prefab dormer with a view outside
Hollands Prefab
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