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Bouwbedrijf R. Vlieland

Dormer installation: more living space under your roof

Dormer installation is a smart investment that immediately adds liveability and value to your home.

  • One fixed contact, from idea to completion
  • Drawings, permit and construction
  • Large network of skilled tradespeople
Google-rating: 5.0 from 5 reviews★★★★★
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The bare flat roof before the work in Amsterdam The same roof after completion: roof extension with a timber roof terrace BeforeAfter
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Dormer

Dormer installation is a smart investment that immediately adds liveability and value to your home. Where a sloping roof now makes the attic cramped, a dormer gives you headroom, daylight and square metres you can really use. A storage attic becomes a bedroom, a workspace or a spacious bathroom.

Bouwbedrijf R. Vlieland handles the dormer from start to finish, with one fixed project leader. If you wish, we also take care of the drawings and the permit. You can see how this works in practice in the project Dormer Zuidervaart, where a cramped attic became a full extra living space.

What we take care of

  • Measuring, design and drawings
  • Checking or applying for the permit
  • Opening the roof and supporting the structure
  • Installing, insulating and weatherproofing
  • Window frames, cladding and interior finishing
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Dormer, Bouwbedrijf R. Vlieland

What does dormer installation give you?

You notice the biggest difference in space. Under a sloping roof there is only a narrow strip where you can stand upright. A dormer raises that part of the roof straight up, adding a good stretch of floor where you can stand and walk. The wide window also lets in far more light than a roof window alone.

An attic with a dormer usually counts as a full storey. That makes the home more pleasant to live in and often worth more when you sell.

  • More headroom and usable floor space
  • Plenty of daylight through a wide window
  • An extra bedroom or workspace
  • More comfort and a higher home value

The Dormer Zuidervaart project

For this client we built a high-quality dormer, transforming a previously cramped attic into a spacious, full extra living area. The photos show the steps: the opened-up roof from the inside, the scaffolding at the rear, the timber frame on the roof and the finished dormer with cladding and a wide row of windows.

You can read the full story in Dormer Zuidervaart.

Can you build a dormer without a permit?

Since 1 January 2024 the Environment and Planning Act (Omgevingswet) applies. A dormer at the rear of a house often does not need a permit, as long as its size and position on the roof stay within the rules. At the front, or on a side facing the public road, an environmental permit (omgevingsvergunning) is usually required. Stricter rules apply to listed buildings and protected townscapes.

So always check your situation via the Omgevingsloket or with your municipality. More background in building without a permit and a permit for alterations. If a permit is needed, we can prepare the drawings and the application for you.

Dormer or roof extension?

A dormer enlarges part of one roof slope. If you want an extra storey across the full width and depth, a roof extension is the bigger step. Which suits your home depends on the space you need, your budget and what the municipality allows. The differences are set out in dormer or roof extension, and you can read more in roof extension and roof terrace.

Insulation and finishing: a dormer that stays comfortable

A dormer must be well insulated and watertight, or it becomes a cold or draughty spot. Wherever possible we use high-quality insulation materials and make sure the joins with the existing roof are properly sealed. If the attic itself is not insulated yet, this is the moment to include it. Read more in insulating an attic.

  • Insulated cheeks, roof and front
  • Window frames with insulating glass
  • Watertight join with the existing roof
  • Interior finishing, ready to use
Good to know

What to look out for with a dormer

Projects from practice

Also see these services

Home alterations: Bouwbedrijf R. Vlieland

Home alterations

  • Changing the layout
  • Removing a load-bearing wall
  • Bulkheads, walls and plaster
  • Drawings and permit
Renovation: Bouwbedrijf R. Vlieland

Renovation

  • Houses and flats
  • New bathroom
  • Insulation and frames
  • Matched to your budget
Reviews

What our customers say

C Cora Tink van Leeuwen 1 day ago
★★★★★

"Wij zijn heel tevreden over het vervangen van de kozijnen (ramen en deur) op ons dakterras. Richard werkt netjes, is vakkundig en komt zijn afspraken na. Je merkt dat hij zijn werk met zorg uitvoert. Al bij het opnemen van het werk dacht hij mee en kwam hij met goed advies. Het resultaat is echt mooi geworden en we zijn er dan ook heel blij mee. Zeker een aanrader!"

B Bettine Sloots 3 months ago
★★★★★

"Waar Richard een aantal jaar geleden onze zolder naar twee volwaardige kamers heeft omgebouwd, waren we heel blij dat hij ons ook heeft kunnen helpen met een garage aanbouw. Niet voor niets dat we hem al twee keer hebben benaderd. Richard is een vakman, denkt mee in de mogelijkheden en de communicatie is top."

E Eric Lemckert 3 months ago
★★★★★

"Richard heeft me onwijs goed geholpen aan wat verbouwingen op mijn kantoor. Plaatsen van een geïsoleerde deur in kozijn en plaatsen van een op maat keukenblok. Raad hem iedereen aan!"

L Lisa Peterzon 2 months ago
★★★★★

"Ik kan niet anders zeggen dan dat we super tevreden zijn! Richard levert ontzettend netjes werk af en neemt daarbij alle zorgen weg."

A ABP van Doesburg 3 months ago
★★★★★

"Offerte snel gemaakt. En de reparatie vakkundig uitgevoerd. Een vakman gericht op service. Dit kom je nog maar weinig tegen."

B Berend, Amsterdam Werkspot, 28 Nov 2016
★★★★★

"Richard heeft bij ons een vliering op zolder gemaakt. Deze vliering is inclusief muur, deur, trap, stopcontacten en schakelaars. (...) Tijdens het gehele traject van ons nieuwbouwhuis hebben wij veel werklui over de vloer gehad en Richard hoorde duidelijk tot de groep die je kunt vertrouwen en het graag netjes wil uitvoeren."

B Bettine, Heerhugowaard Werkspot, 9 Mar 2016
★★★★★

"Kwaliteit en vakmanschap staat voorop bij Richard. Wat zijn we blij met het resultaat en alles tot in de puntjes verzorgd. Een aanrader deze man!"

R Robin, Amsterdam Werkspot, 8 Feb 2016
★★★★★

"Richard heeft in mijn nieuwbouwwoning diverse werkzaamheden uitgevoerd (...) Zeer blij met het eindresultaat, Richard en zijn collega die 1 dag heeft meegeholpen zijn echte vakmannen die tot op de millimeter nauwkeurig werken. Een voorbeeld voor de rest!"

K Koert Koster Werkspot, 9 Nov 2015
★★★★★

"Wij wilden de bovenverdieping geheel laten renoveren,dus kwamen wij in contact met Richard Vlieland. (...) Richard heeft dit naar volle tevredenheid gerealiseerd. Richard werkt precies en netjes en is in onze optiek een prima vakman. Dus naar onze mening is hij zeer zeker een aanrader."

Google-rating: 5.0 from 5 reviews★★★★★ Werkspot-rating: 4.8 from 4 reviews Genuine reviews of Bouwbedrijf R. Vlieland on Google and Werkspot, shown in the original Dutch. View all reviews on Google Write a review View all reviews on Werkspot
Clear answers

Frequently asked questions

Answers to the most common questions about dormer.

How long does dormer installation take?

That depends on the size and the construction method. A dormer prepared in the workshop is often on the roof within a short time. If we build it on site, it takes longer. The interior finishing comes on top of that. We agree the schedule with you in advance.

What does a dormer cost?

The price depends on the width, the materials, the window frames and the interior finishing. We do not quote fixed prices, because every dormer is made to measure. A free tailored quote is the quickest way to a fair price.

Do I need a permit for a dormer?

At the rear often not, at the front usually yes. It depends on the position, the size and your municipality's environmental plan. Check via the Omgevingsloket, or let us look into it for you.

Can I stay at home while the dormer is installed?

Yes, usually. The roof is only open for a short time and we keep the house watertight in between. You will of course notice the work in the attic.

Can you fit out the attic at the same time?

Yes. We can combine the dormer with insulation, walls and finishing, so the attic is ready as a room in one go. See also attic and storage loft.

Do you work in my area?

We work throughout West Friesland and the rest of North Holland, from our base in Zwaag. See for example contractor in Hoorn, or feel free to get in touch.

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Plans for your home?

Call or message Richard Vlieland on +31 6 11 78 63 20, or request a free quote. We are happy to come and have a look.

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