Extending your home: 5 common mistakes to avoid before submitting a permit

Before applying for a permit to extend your home, there are certain pitfalls that can jeopardize your project. Discover 5 common mistakes to absolutely avoid.

1. Neglecting local planning regulations

Each municipality imposes specific rules: distances to be respected, heights, authorized materials, etc. A non-compliant project will be rejected. Always consult the PLU beforehand.

2. Forgetting to have the existing structure diagnosed

Before adding an extension, it is crucial to check the strength of the existing structure (foundations, walls, utilities). Poor planning can be very costly.

3. Relying on the price per m² without precise figures

The actual cost depends on many parameters: site access, land, connections, finishes, etc. Allow a margin for unforeseen events.

4. File an “approximate” permit

A vague or incomplete application may extend the deadline or be rejected. Plans, landscaping, instructions: everything must be clear, precise, and compliant with regulations.

5. Underestimating legal deadlines

Permit obtained ≠ immediate construction. Display, third-party appeals, construction site declaration... Follow each step to avoid disputes.

“A well-designed home isn’t just beautiful: it soothes, inspires, and tells a story – yours.”

— The Ibizan House

“Extending your home doesn't start with plans, but with asking the right questions. Structure, rules, budget, deadlines: every detail counts.”