A detached 1960s house in Bussum received a substantial rear extension. The design falls entirely within the permit-free category, allowing the owners to start immediately without waiting for a municipal decision.
Illustrative blueprint view · existing situation, permit sketch, 3D impression and the delivered result.
The owners of a detached house in Bussum wanted to extend the ground floor with a spacious dining and living room that connects to the garden. The choice of a single-storey extension with a flat roof offered the opportunity to remain entirely within the permit-free category. To achieve this, the design had to be carefully aligned with the dimensions and the rear building line.
We worked out the design to the centimetre: the extension stayed just within the 4-metre limit behind the rear facade and below the 3-metre parapet. The roof surface was included in the plan as a green sedum roof, which is also the best technical choice for flat roofs in the Gooi region. We resolved the steel structure with a free-spanning beam, so no intermediate columns are needed in the new living space.
Because the design was worked out as permit-free, the contractor could start within two weeks of receiving the drawings. The 22 m² extension is fully integrated into the ground floor and connects to the back garden via a wide sliding door. The clients are delighted with the amount of natural light and the seamless indoor-outdoor flow.
Key project details
What we delivered
A permit-ready drawing for an extension starts at Tekenpunt from €595. The exact price depends on the scope and complexity; you receive a fixed price upfront with no additional billing. Request a no-obligation quote.
That depends on the type of intervention and the rules of the municipality of Bussum. 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 deliver the construction drawing within 0-3 weeks, or 0-2 weeks on an urgent basis. The permit procedure itself takes eight weeks for a standard application (Environment Act).
Whether you live in Bussum, het Gooi or anywhere else in the Netherlands: we handle design, structural engineering and permits from A to Z. Since 2016, 800+ projects. A no-obligation quote within 1 business day.