Householder vs Full Planning Application: Which Do You Need?

Published 27 March 2026

When you are planning works to your home, one of the first decisions is whether you need a householder application or a full planning application. The distinction matters more than most people realise. It affects your fees, the time the council takes to decide, what supporting documents you need, how the application is assessed, and ultimately your chances of approval.

Householder Applications

A householder application is specifically designed for works to an existing house or within the grounds of an existing house. The key word is "existing" - the property must already be a single dwelling, and you must be proposing works to that dwelling rather than creating something fundamentally new.

Householder applications cover:

• Extensions (single-storey, two-storey, side, rear, front, wraparound)
• Loft conversions that exceed permitted development limits
• Outbuildings, garages, garden rooms, and studios
• Driveways and hard landscaping (where permitted development does not apply)
• Porches larger than the permitted development limits (3 square metres, 3 metres height)
• Boundary walls, fences, and gates above permitted heights
• Dormer windows
• Basement excavations
• Swimming pools and tennis courts

The application fee in England is currently 258 pounds (2024/25). The council's target decision time is 8 weeks. The assessment focuses on a relatively narrow set of considerations: design quality, impact on neighbours (light, privacy, outlook), effect on the street scene, and compliance with local design policies.

Householder applications are generally simpler to prepare and more likely to succeed. Nationally, householder approval rates run at around 85-90%, compared with 70-80% for full applications. This is not because councils are lenient with householder work. It is because the scope of what can go wrong is smaller, and the policy tests are more predictable.

Full Planning Applications

A full planning application is needed when the development goes beyond alterations to an existing house. It is the catch-all category for everything that does not fit into a more specific application type:

• New-build houses (including building a new dwelling in your garden)
• Change of use (converting a house to flats, a shop to a restaurant, agricultural land to residential)
• Commercial and industrial development
• Mixed-use schemes
• Sub-dividing a dwelling into multiple units
• Any development that is not covered by householder, outline, reserved matters, or other specialist application types

The fee structure for full applications is more complex and generally higher. A new dwelling costs 578 pounds per unit (for the first dwelling, with a sliding scale for larger developments). The target decision time is 8 weeks for minor applications (fewer than 10 dwellings or less than 1,000 square metres of floor space) and 13 weeks for major applications.

The assessment for a full application is broader and more demanding. The council considers highways and transport impact, drainage and flood risk, ecology and biodiversity, trees and landscaping, contaminated land, noise, air quality, affordable housing contributions (for schemes of 10+ dwellings), and compliance with the full range of local plan policies. You may need to submit a transport assessment, flood risk assessment, ecological survey, arboricultural report, contamination investigation, noise assessment, and design and access statement alongside your drawings.

The Grey Areas

Some projects fall into genuinely ambiguous territory:

Garden Buildings Used for Business

A garden office that is ancillary to the main house (you work from home and use it occasionally) is typically householder. A garden building that operates as a separate business premises (clients visit, staff work there, it has its own separate access) may require a full application for change of use.

Granny Annexes

An annexe that is ancillary to the main house (shares facilities, has no separate postal address, is occupied by a family member) is usually householder. An annexe that functions as an independent dwelling (its own kitchen, bathroom, separate entrance, could be let independently) often requires a full application for a new dwelling. The physical design matters less than the functional relationship with the main house.

Subdividing a House

Converting a house into two flats is not a householder application, even though the building already exists. It creates new planning units and requires a full application. This catches many people out, particularly those who buy a large house intending to convert it.

Replacement Dwellings

Demolishing an existing house and building a new one on the same footprint is a full application, not a householder one. The existing dwelling ceases to exist, so "works to an existing house" no longer applies. This is true even if the replacement is the same size and appearance.

What the Data Shows

Our database contains 231,000+ full applications and 13,000+ householder applications. Full applications dominate because they cover all non-residential development, all new housing, and all changes of use. For individual homeowners planning work to their existing property, the householder route is almost always the correct one.

The apparent imbalance also reflects the fact that many householder-scale projects fall under permitted development and never need a planning application at all. A single-storey rear extension up to 6 metres (detached) or 4 metres (other houses) under a prior approval notification, a loft conversion within volume limits, and most garden buildings under 2.5 metres to the eaves do not require planning permission in the first place.

Why It Matters Which Route You Take

Submitting the wrong application type causes problems. If you submit a full application when householder would have been correct, you will pay a higher fee and the council may return your application asking you to resubmit on the correct form. If you submit a householder application for development that actually requires a full application (say, a garden dwelling that is clearly independent), the council will either refuse to validate it or refuse it on the basis that it creates an independent dwelling without the necessary policy compliance.

The application type also affects how the council assesses your proposal. A householder application for an outbuilding is assessed primarily on design and neighbour impact. A full application for a new dwelling on the same site must also demonstrate acceptable highways access, adequate parking, sufficient amenity space, compliance with housing density policies, and potentially contribute to affordable housing or community infrastructure.

Common Mistakes

• Submitting a full application when householder would do. You will pay more and potentially face a broader assessment. If you are extending or altering an existing house, check whether householder is the correct route first.
• Forgetting you might not need either. Many home improvements fall under permitted development rights. Before paying any application fee, check whether your project qualifies. Our permitted development guide covers the main categories.
• Not checking your permitted development status. If your property is in a conservation area, is a flat or maisonette, has had a previous Article 4 direction applied, or has already used up its permitted development allowance through previous extensions, you may need planning permission for work that would normally be permitted.
• Assuming ancillary means householder. The test is not just about physical connection to the main house. It is about functional dependency. A building that could operate independently of the main dwelling is likely to be treated as a new planning unit regardless of what you call it.

How to Decide

Ask yourself three questions:

1. Does a dwelling already exist on the site? If no, you need a full application (or outline).
2. Are you proposing works to that existing dwelling or its grounds? If yes, and the works do not create anything functionally independent, you probably need a householder application.
3. Will the result be a single dwelling used by one household? If no (you are creating flats, an independent annexe, or a separate dwelling), you need a full application.

If you are still unsure, most councils offer a free or low-cost pre-application enquiry service that will confirm the correct application type before you commit to drawings and fees.

Search your postcode on Planning Signal to see what types of application your neighbours have submitted for similar work.