The 14-Day Notification Rule: What Homeowners Must Do Before Building a Garden Dwelling
Even under the new planning exemption, you must notify your local planning authority at least 14 days before work begins. Here's what the notification involves and why it matters.

Looking for the full picture? Read our 45m² planning exemption guide.
A Crucial Step You Cannot Skip
One of the key conditions of the new garden dwelling exemption is the 14-day notification rule. Even though you don't need planning permission, you must notify your local planning authority at least 14 days before any work begins.
This is not a formality. Building without the notification means the exemption does not apply — and you could find yourself facing enforcement action for an unauthorised development.
What the Notification Must Include
The notification to the planning authority must confirm:
- Your details as the property owner
- The address of the principal dwelling
- A description of the proposed works, including the size and location of the auxiliary dwelling
- Confirmation that the project meets all exemption conditions (owner-occupied, size limits, garden space, access, services, etc.)
- Confirmation that all Building Regulations will be met
Why the Notification Exists
The notification serves several important purposes:
- It allows the planning authority to verify that your project genuinely qualifies for the exemption
- It creates a formal record of the development, which is important for future property transactions
- It ensures Building Control requirements are flagged at the outset
- It protects homeowners by confirming the exemption applies before significant investment is made
What Happens After Notification?
Once you've submitted the notification, you simply wait 14 days. If the planning authority does not raise an objection within that period confirming that your project does not qualify for the exemption, you may proceed.
If the authority determines that your project does not meet the exemption conditions, you will need to apply for full planning permission before proceeding.
How New Chapter Homes Handles This
As part of our service, we guide every client through the notification process:
- We confirm your project qualifies for the exemption during the site survey
- We prepare the notification documentation on your behalf
- We submit it to the relevant planning authority
- We manage the 14-day waiting period within your build timeline
- We proceed with construction once the exemption is confirmed
You don't have to navigate the bureaucracy alone. We handle it for you.
Note: The 14-day notification rule described here applies under the Class 3A garden dwelling exemption, in force from 27 July 2026 under S.I. No. 340 of 2026. Always verify the current position with your local planning authority before proceeding. See our Planning Permission Ireland: The Complete 2026 Guide for the latest information.
Book a free site survey and we'll take care of the entire process.
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