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RIAI Stamp
Typical Drawing

DormerWindow.ie

 

Do you have an attic space that could be enlarged through the construction of a dormer window?

 

Contact us here for a free quotation for a design and planning application for your proposed dormer.​

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Do I need planning permission?

 

All dormer windows in Ireland will require planning permission.​

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Can I build a dormer window to the front of the house?

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Local Authorities sometimes restrict the construction of front-facing dormer windows, however, they can be permitted if there is precedent, the window will be shielded from public view or if it faces an open space.

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Can I build a dormer window to the side of the house?

 

It is generally possible to obtain planning permission to build a dormer window to the side of the house; Planning Authorities will often include a condition that any side-facing glazing will be obscured.

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What about a rooflight (Velux)?

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Rooflights in the roof to the rear of the house are generally considered exempt development.

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Rooflights in the roof to the side of the house are generally considered exempt development if not viewable from a public road.

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Rooflights to the front of the will always require planning permission.

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How big can I build it?

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The dormer window should be above the eaves line and no higher than the roof ridge. Planning authorities generally restrict the width to around 3.5m in width; however, this can often be enlarged with an appeal.

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How much does it cost to build?

 

It depends on how big it is, how much work needs to be done to the roof/attic space etc.

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Contact us for a free estimate.

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Can the attic room be classed as a bedroom?

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It depends on a number of factors including ceiling height and stair size; generally to classify it as a bedroom a full-height ceiling will be required among a number of factors.

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If the room doesn't meet the criteria for a bedroom it can be used as a store.

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What other attic extension options are there?

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Other potential attic extensions include building up an existing hipped-roof to a gable; or the construction of a mansard roof. These extensions would require planning permission.

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Who are we and what we do?

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We're an Irish architectural practice with 16 years' experience. We will design a proposed dormer window, produce a set of drawings and put together a full planning application including public notices, application forms etc., before lodging the application to the local authority.

 

We can give an estimated cost of the proposed window in advance.

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We can work with builders to construct the dormer.

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If required we can issue Opinion on Compliance; we're registered with the RIAI and have full professional indemnity insurance.

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Click here to see previous projects.

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How long does permission last for?

 

Planning permission lasts for 5 years.

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Once I have permission, what do I do next?

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Once you have permission you can start building after lodging your commencement notice. We can refer you to a number of attic builders who can undertake the work on your behalf. Alternatively, you can employ your own builder to undertake the work.

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Example of typical drawing submitted to Local Authority

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