What Is a Right of Light and How Does It Arise Under English Law?

By Neil Goddard · 29 May 2026

A right of light is a legal right that lets a property owner receive natural daylight through specific openings in their building, usually windows. It is one of the oldest easements in English property law, and it can have real consequences for anyone living next to a new development.

The most common way a right of light comes into existence is through long use. Under the Prescription Act 1832, if a building has received natural light through a defined window or opening continuously for 20 years or more, the owner of that building acquires a legal right to keep receiving that light. The right does not need to be written into the title deeds. It arises automatically once the 20-year period is met.

A few things are worth being clear about here. The 20 years must be uninterrupted. If the light is blocked for a significant stretch during that period, the clock can reset. The Rights of Light Act 1959 introduced a mechanism called a light obstruction notice, which lets a neighbouring landowner notionally block the light on paper, without physically building anything. This is often used by developers to prevent rights from crystallising.

The right also attaches to a specific opening, not the building as a whole. A window that has been bricked up does not accrue any rights during the time it is sealed. If you open a new window, the 20-year period starts from the day that window first lets in light.

Rights of light can also arise through express grant, where a deed or lease specifically creates the right, or through implication, where it is reasonably necessary for the use of the property. These situations are less common but they do occur.

It is also worth knowing that a right of light is not a right to sunshine, and it is not a right to a view. What it protects is the level of natural illumination reaching the inside of a room through a particular window. The legal test asks whether the light remaining after a proposed development would still be sufficient for the ordinary use of that room. A living room, a bedroom, and a commercial office all have different thresholds, and technical assessments are carried out to measure this.

If a neighbouring development reduces the light below that threshold, the property owner may have grounds for a claim. The available remedies include financial compensation and, in some cases, a court order requiring part of the development to be altered or taken down. Courts have discretion over which remedy to award, and the outcome depends heavily on the specific facts.

For anyone who owns a property near a proposed or ongoing development, the starting point is understanding whether a right of light exists and whether it is likely to be affected. That assessment requires a specialist, but knowing the basics helps you ask the right questions early on.

Reference: Prescription Act 1832, section 3; Rights of Light Act 1959