Prior Approvals for Larger Extensions
As a Homeowner, you may enjoy permitted development rights.
Householder Prior Approval Notifications are required to notify your local authority that you seek their prior approval for a larger single-storey extension up to twice the depth as afforded by standard permitted development rights;
Detached House - from 4m to 8m
Semi-Detached & Terraced- from 3m to 6m
Your application will benefit from accurate scaled drawings to show your existing property, and a set of drawings to present your proposal.
Notifications of Prior Approval may take up to 42 days to determine. Subject to Legislation there may be a deemed consent should the Authority not decide the notification after 56 days.
This type of application does not permit the LPA to assess the application against their local planning policy.
Notifications for prior approval are not planning applications, but are the current mechanism to achieve larger householder extensions in accordance with the GPDO.
Prior Approval notifications for larger extensions may not be sought retrospectively.
The local authority is required to consult your immediate affected property owners and letters will be sent to your neighbours. Depending on Council, notifications for prior approval may not be visible on Local Authority Planning Searches.





"Our experience was a reliable service from Rubix and they know their stuff! The application presented very well to Council planners and it got my planning approved. Will be using again."
Sandra
"We've used Rubix Planning for a number of projects, a large extension and most recently a garden building. We've had excellent service and have been guided through the process clearly and efficiently. We highly recommend Rubix Planning a 5 star service"
Antonia
"Its always a pleasure to work with professional company. Highly recommend."
Michael
Rubix Render Studio



Why Choose Rubix Planning
Experience
Our Chartered Town Planners and Architectural Designers expertly manage every stage of the planning process. With a proven track record across London and the South East, we ensure your project meets all statutory criteria, guiding you through complex planning submissions with precision and professionalism.
Integration
Rubix Planning offers a full range of planning and architectural services, preparing all necessary drawings and supporting statements to accompany your application. Our streamlined approach saves you time and effort, delivering tailored solutions that meet your unique project requirements.
Trust
Trust is central to everything we do. With clear, step-by-step guidance from submission to determination, we keep you informed and involved throughout the process. Our transparent approach and consistent results give you confidence, even with the most challenging planning applications.
Partnership
We partner with trusted professionals, including engineers, ecologists, and arboricultural consultants, to meet all technical and statutory requirements. These collaborations ensure your project benefits from expert input, with a unified strategy tailored to its specific needs for guaranteed success.