Environmental planning permit for a dormer

What changed with the Omgevingswet?

Under the Wabo (until 2024), the environmental planning permit was a single entity made up of components (building, demolition, monument). Since the Omgevingswet, the structure has changed: there are separate activities that you can apply for individually. Relevant for a dormer are:

• Building activity (technical) — checks if the structure complies with the Bbl (construction, fire safety, insulation, ventilation).
• Environment plan activity (spatial) — checks whether the structure fits within the municipality's environment plan, including aesthetic review (welstand).
• Monument — if the property has a protected status.
• Protected town or cityscape — additional assessment.

Sometimes you need both, sometimes one. The Omgevingsloket determines based on location and plan which activities apply.

The split: technical versus spatial

The Omgevingswet introduces the split (knip) between the technical and spatial parts of construction. For home renovations, the following applies:

• Building activity (technical): for many renovations, this is permit-free but does have a notification obligation. You submit a building notification to the municipality, adding structural calculations and the work plan. The assessment is not done in advance — the competent authority accepts the notification and enforces structurally retrospectively in case of defects.
• Environment plan activity (spatial): this remains a real permit, with an aesthetic review and publication.

For a dormer: if the intervention is not permit-free spatially (front, monument, not meeting Bbl exemption), you submit an environment plan activity. The technical side often follows as a building notification.

Procedure and timelines

The regular procedure for the environmental planning permit:

1. Submission via Omgevingsloket (online form, DigiD required). 2. Confirmation of receipt + start of the 8-week decision period. 3. Substantive assessment: municipality checks if documents are complete, involves aesthetic review (welstand), and evaluates the environment plan. 4. Supplement request possible — decision period pauses until you supplement. 5. Decision: permit granted or refused. In case of extension: 6 extra weeks. 6. Publication on officielebekendmakingen.nl + objection period of 6 weeks for interested parties. 7. After the objection period (without objections), the permit is irrevocable.

For the extended procedure (rare for dormers): 26 weeks (6 months), with draft permit and public inspection. Occurs almost exclusively with monuments or complex cases.

What do you need to submit?

Standard application documents for a dormer:

• Situation drawing (scale 1:1000) — location of the property on cadastral map.
• Floor plan existing and new situation (scale 1:100).
• Facade views existing and new (front view, side view, possibly rear view).
• Cross-section with height dimensions.
• Detail drawings (1:5 or 1:10) of window frame/cheek connections.
• Structural principle and calculation (trimmer construction).
• Photos of current situation (facade, roof surface).
• Materials and color sheets (aesthetic review specifically requires this).
• Possibly: building notification for the technical part.

The municipality can set additional requirements (energy performance, environmental impact, etc.). A professional dormer company almost always provides these documents ready-made.

Municipal fees (leges) and additional costs

Municipal fees (leges) are local charges that municipalities levy for processing the application. The amount varies greatly:

• Often a fixed amount for small structures (€200–€600).
• Sometimes a percentage of the construction costs (0.5–3%).
• Extra for monument/aesthetic review or preliminary consultation.

Check with your municipality beforehand; rates are listed in the fees ordinance (municipal website). In addition, you may face costs for:

• Drafting work by an architect or construction company.
• Structural engineer (trimmer calculation).
• Preliminary aesthetic review consultation.
• Building notification (separate form, sometimes also carries fees).

In the event of a refused permit, the fees usually remain payable. Hence the importance of a preliminary consultation.

Frequently asked questions

Short, honest answers to frequently asked questions.

What is the difference between an environmental planning permit and a building permit?

The building permit no longer exists as a separate permit. Since the Wabo (2010) and now the Omgevingswet (2024), everything has been merged under the environmental planning permit, split into separate activities.

Do I always need DigiD?

For private applications via the Omgevingsloket, yes. Businesses use eHerkenning.

Can I have my contractor do the application?

Yes, with an authorization. Many dormer companies include the application as standard.

How long does the 'regular procedure' take exactly?

An 8-week decision period, plus a one-time extension of 6 weeks, plus a 6-week objection period after publication. In total, it can take up to ~5 months.

What if I discover during construction that I need to deviate from the permit?

Stop immediately and request a revision. Building in deviation is an offense and can lead to a halt or an order subject to a penalty (last onder dwangsom).

Does the environmental planning permit also apply to the demolition of an existing dormer?

Usually not for minor demolition work, but for monuments or asbestos, a demolition notification or permit may be required.

What exactly is an environment plan activity?

An activity that is assessed against the environment plan (the successor to the zoning plan) — think of aesthetic review (welstand), usage rules, height restrictions.

How do I know which activity I need to apply for?

The Permit Check (Vergunningcheck) on the Omgevingsloket determines this per location and plan. In doubt? Request a preliminary consultation.

Is the processing timeline strict?

If the timeline is exceeded, a 'lex silencio positivo' can apply — no decision = granted by operation of law. But this rarely plays a role with dormers because the timeline can pause with a supplement request.

What if the municipality is unreachable or slow?

You can send a notice of default (ingebrekestelling) and eventually claim a penalty. In practice, most delays are resolved through direct contact with the case handler.

Summary

Since 2024, the environmental planning permit is made up of separate activities: for a dormer usually the building activity (technical, often requiring notification) and the environment plan activity (spatial, with aesthetic review). The regular procedure takes 8 weeks plus a 6-week objection period. Preliminary consultation and careful application documents significantly shorten the process.