1. What a building permit always brings
Three things are not optional.
| What it brings | Character |
|---|---|
| A building design | the basis of the permit, always required |
| A state fee | the amount depends on the activity, some rates changed on 01.08.2026 |
| Stricter requirements | including competent owner supervision in certain cases |
The third row is often larger in cost terms than the state fee itself, and clients frequently overlook it. Owner supervision is a running cost throughout construction rather than a one-off payment, which makes its effect on the budget different in kind from a fee.
2. What may precede the procedure
Two documents are not part of the building permit but may be a precondition for it. They are the detailed plan and the design conditions.
A detailed plan, required in certain cases including the erection of a non-residential building subject to permit. Design conditions, where no detailed plan exists or where it is being specified further.
Which of them applies, and whether either does, must be checked with the local authority. In scheduling terms this is the most important point in the whole article: a detailed plan procedure is considerably longer than a permit procedure and cannot be run in parallel with a permit application.
Where a detailed plan is needed and does not exist, the start of the project is not measured in months but in a longer unit of time. That is precisely why the change of 1 August 2026, which in certain cases allows a detailed plan to be replaced by design conditions, is the part of the reform with the greatest effect on schedules.
3. Who is drawn into the procedure
The Building Code provides for involvement, and this is the main variable in the duration, because it depends on third parties the applicant does not control. Who is involved depends on the project.
| Who is involved | When |
|---|---|
| The owner of the immovable | where the applicant is not the owner |
| The owner of an adjoining immovable | where necessary |
| An authority whose competence relates to the subject of the application | for approval |
| An authority or person whose rights or interests the building may affect | to give an opinion |
Every additional party adds time whose length cannot be calculated in advance. That is why a permit procedure is not comparable to the ten days of a building notice: there, there is a deadline; here, there is a process.
4. What it means for the schedule
Three observations add up to one recommendation. A permit procedure has no known duration, unlike the ten days of a building notice. Gathering approvals and opinions adds time that depends on the number of parties involved. Prior documents, where they are needed, add the most.
The practical recommendation follows directly: give the client a range and its assumptions rather than a date. This is the same principle that applies in any administrative procedure, and it protects the professional as well, since meeting a date does not depend on them alone.
5. Requirements for the building design
Two points affect preparation more than they first appear to. They concern approvals and the completeness of documents.
The building design must be signed by its author and by the responsible competent person. The designer's competence can be checked in the relevant registers.
This means that choosing a designer is not only a question of price but also a question of competence, and it has to be checked before the contract. A design whose author lacks the required competence is not usable in the procedure, and that emerges at the worst possible moment.
Summary and four practical rules
A building permit always brings a building design, a state fee and stricter requirements, including competent owner supervision in certain cases, which is a running cost and often larger than the fee. The procedure may be preceded by a detailed plan or design conditions, and the detailed plan is the real variable in the schedule, because its procedure is considerably longer and does not run in parallel with the permit.
Four rules: check first whether a detailed plan or design conditions are needed, since they determine the schedule. Budget for owner supervision where it is required. Check the designer's competence in the register before signing the contract. Give the client a range with its assumptions rather than a date.
This article offers professional orientation as at the date of verification. It does not replace the assessment of the local authority.