Permitted Development Rights Explained

Permitted development (PD) rights are a national grant of planning permission set out in legislation. They allow you to carry out specified types of development without submitting a planning application to your local council, provided your project meets the conditions and limits for the relevant class.

PD rights exist because Parliament decided that certain types of small-scale development are acceptable in principle and should not need individual approval. This reduces the burden on both homeowners and local planning authorities.

It is important to understand that PD rights are not the same as building regulations approval. Even if your project is permitted development, you will almost always need to comply with building regulations separately.

The GPDO 2015 is the statutory instrument that grants permitted development rights in England. It replaced the earlier 1995 Order and has been amended numerous times since.

The Order is divided into Parts and Classes. The most relevant for homeowners are in Part 1 (development within the curtilage of a dwellinghouse):

• Class A — Enlargement, improvement, or other alteration (rear and side extensions)
• Class B — Additions or alterations to the roof (loft conversions, dormers)
• Class C — Other alterations to the roof (rooflights)
• Class D — Porches
• Class E — Buildings incidental to the enjoyment of the dwellinghouse (outbuildings, sheds, garden offices)
• Class F — Hard surfaces (driveways, patios)
• Class AA — Enlargement of a dwellinghouse by construction of additional storeys

Each class specifies conditions (requirements that must be met) and limitations (types of development that are excluded). If your project meets all conditions and does not fall within any limitations, it is permitted development.

For current limits and thresholds, see our Permitted Development Rules 2026 reference.

Permitted development rights under Part 1 of the GPDO apply to dwellinghouses in England. This includes most houses, bungalows, and some maisonettes. However, there are important exclusions:

• Flats and maisonettes without their own curtilage — Part 1 PD rights apply only to dwellinghouses, not to individual flats
• Properties created by permitted development — some buildings converted to residential use under PD (such as office-to-residential conversions under Class O or Class MA) have had their Part 1 PD rights removed by condition
• Properties with conditions removing PD rights — if your original planning permission included a condition removing PD rights, those rights do not apply

If you are unsure whether your property has PD rights, a Lawful Development Certificate application is the definitive way to find out.

An Article 4 direction is an order made by a local planning authority that withdraws specific permitted development rights in a defined area. When an Article 4 direction is in place, you need to apply for planning permission for works that would otherwise be PD.

Article 4 directions are commonly used in:

• Conservation areas — to control changes to the external appearance of buildings
• Areas with specific character concerns — to prevent loss of housing through conversions, or to maintain the character of a particular street or neighbourhood

You can check whether your property is affected by an Article 4 direction by contacting your local planning authority or using our free PD checker, which flags known Article 4 areas.

Properties in certain designated areas face additional restrictions on permitted development:

• Conservation areas — PD rights are more limited. For example, you cannot add a dormer to a roof slope facing a highway, and cladding the exterior requires planning permission
• Listed buildings — PD rights under Part 1 do not apply to listed buildings. Any alteration that affects the character of a listed building requires both planning permission and listed building consent
• Areas of Outstanding Natural Beauty (AONBs) — also known as National Landscapes, these have the same additional restrictions as conservation areas
• National Parks and the Broads — same restrictions as AONBs and conservation areas
• World Heritage Sites — additional restrictions apply

These areas are collectively referred to as designated land in the GPDO. The specific restrictions vary by GPDO class.

Each GPDO class contains two types of rules:

• Limitations — these define what is excluded from PD rights. If your project falls within a limitation, it is not permitted development at all. For example, a Class A limitation excludes development on Article 1(5) land (designated land) that involves side extensions or any cladding
• Conditions — these define requirements that must be met for the development to be PD. For example, a Class A condition requires that the height of the extension at the eaves must not exceed the height of the eaves of the original house

Understanding the difference matters because limitations remove PD rights entirely, while conditions set the rules within which PD rights operate.

If you want formal written confirmation that your project is permitted development, you should apply for a Lawful Development Certificate (LDC) from your local planning authority. This costs £274 and provides legal proof of your PD rights.

An LDC is not legally required before you start building, but it is strongly recommended — especially if you plan to sell, remortgage, or insure your property in the future. Without one, you rely on the buyer’s solicitor accepting your own assessment that the work was PD, which can cause delays or problems at the point of sale.

For a quick initial assessment, use our free PD checker to get a rule-by-rule breakdown of your project against the relevant GPDO class.