A 1930s terraced house in Delft-Tanthof got a dormer on the front. The narrow plot width called for precise dimensions that just fell within the permit-free limits. The dormer was in place within the agreed planning, without a permit procedure.
Illustrative blueprint view · existing situation, dimension check for narrow plot, measured drawing and final result.
The property in Tanthof was part of a row of narrow terraced houses with a plot width of just 5.1 metres. The permit-free rules tie the maximum width of the dormer to two-thirds of the width of the roof surface. That left little margin. The owner still wanted as much light and usable space as possible in the attic, and was unsure whether the desired width was still just within the permit-free limits.
We measured the exact width of the roof surface and calculated the maximum permit-free width. By making a smart choice of window arrangement and placing two wide window sections in a narrow frame, we still brought in plenty of light. The setback of the dormer from the ridge just met the 0.5-metre requirement. The result: maximum dormer, no permit procedure required.
After installation the attic room has 5 m² of extra usable space with good headroom. Two large window frames bring daylight into the bedroom. Because the dormer was permit-free, the owner could engage a manufacturer straight after receiving the drawings. The dormer was in place in total by arrangement after the order. The owner did not have to wait a moment for a municipal decision.
Key project details
What we delivered
A permit-ready drawing for a dormer starts from €379 incl. VAT at Tekenpunt. The exact price depends on the size and complexity; you get a fixed price upfront, with no surprise extras afterwards. Request a no-obligation quote.
That depends on the type of intervention and the rules of the municipality of Delft. We check the aesthetic review policy and the zoning plan in advance, so you know where you stand and your plan typically passes the review in one go.
We plan the construction drawing by arrangement; rush is available for a surcharge. The permit procedure itself takes eight weeks for a regular application (Omgevingswet).
Whether you live in Delft, Zuid-Holland or elsewhere in the Netherlands: we calculate the permit-free maximums, draw the dormer and deliver the complete file. Since 2016, 930 projects. Request a no-obligation quote.