Extension of Use (Extension of User)
Planning support for an application to extend the authorised use of land or premises.

01 · Understand the application
An extension of use instruction begins with the use already authorised for a property and the additional activity or extension being proposed. The practical question is how the proposal relates to the existing permission, the surrounding area and the site's capacity to accommodate it.
We examine the available approvals and site information before defining the planning task. The assessment can consider the relationship between activities, access, services and neighbouring uses, together with any supporting studies required for the specific case. We then prepare and coordinate the agreed application material. The relevant authority determines the application route, decision and conditions.
02 · Is this the right service?
You propose an additional or extended activity alongside a known existing use.
You need to understand whether the proposal extends an existing permission or requires a different planning application.
An appointed project team needs a planning assessment and defined supporting documentation for the extension.
03 · What you receive
- An assessment of the existing authorised use, proposed extension, planning implications and outstanding information needs.
- The application documentation and supporting planning case included in the instruction.
- A coordinated record of submissions, clarification requests, responses and actions assigned to the client or specialist team.
04 · How we support the application
- Confirm the existing authorised use
- Assess the proposed extension and planning implications
- Prepare and coordinate the application
05 · Prepare your brief
- Current approvals and site details
- Ownership or authority documents
- Description and drawings of the proposed extension where relevant
06 · Scope and professional responsibilities
The scope covers the stated planning application. Related design, survey, legal and environmental services are commissioned separately where required. Decisions and conditions remain with the competent authorities.
For technical teams
Physical and Land Use Planning Act, 2019; Physical and Land Use Planning (General Development Permission and Control) Regulations, 2021. Confirm the applicable county process for each site.
Points to agree in the technical brief
- Describe the additional activity and its relationship with the existing authorised use, including the area and operating arrangements involved.
- Review the available permissions, site access, neighbouring activities and infrastructure information relevant to the proposal.
- Agree the application material, specialist inputs and responsibility for authority enquiries and any required public notification.
07 · Common questions
Can I assume the existing approval covers an extra activity?
The existing permission and proposed activity need to be examined. An initial review helps establish the appropriate authority enquiry or application.
Will you need drawings?
The requirement depends on the proposal. Existing and proposed drawings, where relevant, are reviewed alongside other supporting documents before the scope is agreed.
Can one application resolve every approval?
A planning application has a defined purpose. Related building, environmental, survey or other requirements are identified and coordinated through the appropriate professionals.
Make the next step clear
Share the location, your intended outcome and the information already available. Discuss your project →
