An extra storey on your home. Setback, full-width or with a roof terrace. 220+ roof extensions completed across the Netherlands, with in-depth knowledge of each municipality's aesthetic requirements. Fixed price upfront, 90% approved first time.
Een dakopbouw is een complete extra woonlaag bovenop je bestaande woning, in de varianten setback, volle breedte of met dakterras. Het ontwerp inclusief vergunningsset start vanaf 895 euro. De wettelijke vergunningstermijn is 8 weken onder de Omgevingswet. Bij Tekenpunt gaat 90% in 1 keer door welstand. Je volgt je hele aanvraag live in je eigen online dossier, van offerte tot oplevering.
Not the same as a dormer (window projection only) or ridge raising (ridge point only). Below are the six components we draw.
500 mm setback from the front facade. Required in protected townscapes and many historic centres.
Maximum 30° in areas with strict aesthetic review. Flat roof often possible in post-war districts.
Steel beams or prefabricated walls. KIWA calculation required.
Reinforcement of foundations and load-bearing walls may be required. We assess this in advance.
Minimum Rc 6.3 m²K/W (new-build level). We design directly in compliance with the Bbl.
Position and gradient of the staircase must comply with escape route standards. Often within the existing stair cupboard.
Four questions, about 30 seconds. No obligation.
Plat dak in een naoorlogse wijk met soepele welstand en 25-35 m² ambitie. Verwacht 8 weken vergunning, 90% kans op directe goedkeuring. Vanaf-prijs ontwerp €895. Vraag een vrijblijvende offerte aan voor jouw exacte situatie.
Indicative calculator based on averages. For an exact amount, request a quote.
* We handle design, permit and structural calculation. Construction is carried out separately by a contractor; that amount is purely an estimate. Request a quote for the exact drawing costs.
All amounts are price indications (from-prices) excluding VAT. Your personal quote always shows the total price, including VAT for consumers.
For reference: market-wide a roof extension in 2026 costs roughly 1,500 to 3,500 euros per m2, with prefab usually the most economical and custom work on average 10 to 40% higher. The spread is large, so always request several building quotes alongside our fixed drawing price.
Not every option is permitted everywhere. The strictness of the aesthetic review in your neighbourhood largely determines which option is available.
The additional storey is set back 500 mm from the front facade. Barely visible from street level, as required by aesthetic review in a protected townscape.
Roof extension across the full width of the home, directly above the existing facade. Maximum additional space for those the rules permit it.
Setback where the recessed space becomes private outdoor space. Combines living and outdoor on one floor.
A roof extension is not always the best choice. Here is how it compares to a dormer and ridge raising.
Every municipality has its own aesthetic policy. Below is a worked example per area type; for your municipality, wherever in the Netherlands, we check the local requirements in advance.
Example project · listed townscape · 3rd residential storey on existing three-storey building
Challenge: A family wanted a third bedroom for their newborn second child. Their 19th-century home had space on the flat roof, but the building lies within a protected townscape. The aesthetic review only permits a set-back addition, and achieving a structural connection to the 130-year-old building was a puzzle.
Our approach: Preliminary consultation with the aesthetic review committee showed that a 500 mm setback is acceptable. Our KIWA-certified structural engineer designed a steel structure that distributes the additional load across the existing load-bearing front facade without foundation reinforcement. The 3D design showed the visual impact from the street, and the aesthetic review was approved in one round.
Result: 28 m² of net additional living space. Permit within 7 weeks. Build time 8 weeks. Final costs exactly as quoted. The family now has an extra bedroom plus a spacious home office with a roof light.
A roof extension can be beneficial for your energy label and your mortgage capacity. What you need to know.
Up to 106% of the post-renovation market value. With a roof extension, your property value can increase significantly, depending on location, execution and market conditions.
SOURCE · NHG.NL / RABOBANK 2026Good insulation in the new storey lowers the overall average for the home. Many projects move from label C/D to A/B.
REQUIRED · Rc ≥ 6.3 · BblFor a heat pump and insulation as part of your renovation, ISDE subsidy may be available: a heat pump quickly yields €1.500 to €2.500, insulation is reimbursed per m². Current amounts via RVO.
RVO · ISDE 2026 / UNTIL 31-12-2026Ontwerp + vergunning: €895 (soepele welstand) tot €2.295 (monument of beschermd stadsgezicht). Bouwkosten gemiddeld €55.000-€70.000 voor 28 m² setback-opbouw. Wij kunnen 2-3 aannemers introduceren voor offertes.
No. The zoning plan and aesthetic policy determine whether a roof extension is permitted. In a protected townscape a setback is often the only option; in post-war neighbourhoods full-width extensions are usually allowed. We offer a free aesthetic review check.
The statutory period is 8 weeks (standard procedure, Environment and Planning Act). In strict aesthetic review areas within a protected townscape 10-14 weeks due to heritage advice. For a listed national monument up to 26 weeks. 90% of our submissions are approved first time.
Yes, for every roof extension. An extra storey means additional load on foundations, load-bearing walls and any floor beams. Our KIWA-certified structural engineer produces the calculation in accordance with NEN-EN 1990, required with the permit application.
With us that happens in fewer than 10% of cases, usually because a deviation from the aesthetic policy is requested. We guide you through the objection process free of charge, or submit a revised design.
Not legally required, but wise. Neighbours can object to your permit application (submit a view). We always recommend consulting them in advance, and can help draft a neighbour consultation note.
A roof extension generally increases the property value, depending on the extra m², the finish and the location. We include a calculation per situation in the quote.
66 klanten beoordeelden hun dakopbouw-project met gemiddeld 4.9 van de 5 sterren. Een paar van hun reacties:
Fantastische ervaring. We hadden met spoed een constructieberekening nodig voor een dakopbouw. Binnen no-time hadden we de documenten in huis, en de gemeente Amsterdam ging zonder problemen akkoord. De prijs was vooraf heel helder, geen verrassingen achteraf.
Roof extensionGeweldige service en duidelijke communicatie.
Roof extensionHeel blij met het meedenken. De constructieberekening voor de dakopbouw was erg compleet. Geen gezeur met de gemeente Assen.
Roof extensionA fixed-price quote with schedule within 1 working day. Free site visit for surveying and aesthetic review check. No obligation.