What is a right to light?
A right to light is an easement: a property right that allows a homeowner to receive natural light. It means another person's building work should not unduly shade the property, which protects both quality of life and property value.
Why does natural light matter?
Natural light does more than light a room: sunlight is linked with well-being and with regulating the body's daily rhythms.
Where does the right to light come from?
Disputes over access to light and air appear in historical documents and property records, and the principle can be traced through old English common law.
The Prescription Act 1832
The Prescription Act 1832 provided that if a property enjoyed uninterrupted natural light for 20 years, that light became a legal right. This 20-year rule has shaped property disputes and litigation ever since.
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Does planning permission override a right to light?
No. Homeowners often assume that planning permission granted for a neighbouring building automatically overrides their right to light, but it does not.
Planning permission and the right to light serve different purposes. A building can have valid planning permission yet still infringe another property's right to light, and having permission does not remove the possible legal consequences.
What can you do if a development blocks your light?
- Start a conversation. Begin with constructive communication. The other party may not know about the right or understand the effect of the work.
- Take professional advice. Property rights can be complex. Experienced professionals can explain the possible courses of action, whether a claim is likely to succeed and how the right applies in the particular case.
- Consider legal action. Where agreement cannot be reached, a homeowner may seek an injunction to stop the construction or, in some cases, compensation for the loss of property value or quality of life.
What to do next
- Note how long the property has enjoyed its current light, since the 20-year rule is central.
- Do not assume that a neighbour's planning permission settles the matter; it does not automatically override a right to light.
- If light may be blocked, raise it with the other party first.
- Take professional advice on the options and the strength of any claim before considering legal action.
What a survey can — and cannot — tell you
A building survey provides an informed assessment of the visible condition of a property. Inspections are non-intrusive and limited to areas that are accessible at the time of inspection.
Surveyors can give insight into a right to light: the possible courses of action, whether a claim is feasible and how the right applies to a particular property.
- The windows and rooms that receive natural light
- Neighbouring buildings and construction visible at the time of inspection
However, there are limitations to what a survey can determine without intrusive investigation.
- Whether light has been enjoyed without interruption for 20 years
- Whether a neighbouring development will infringe a right to light
- Legal remedies, such as injunctions or compensation, which are matters for legal action
Where higher-risk indicators are identified, further specialist or intrusive investigation may be recommended.
Frequently asked questions
What is a right to light?
It is an easement, a property right that allows a property to receive natural light, so that another person's building work does not unduly shade it.
How long does it take to gain a right to light?
Under the Prescription Act 1832, light enjoyed without interruption for 20 years can become a legal right.
Can a neighbour with planning permission block a property's light?
Planning permission does not automatically override a right to light. A building can have valid permission and still infringe it.
What can be done if a right to light is infringed?
Start by talking to the other party and take professional advice. If agreement cannot be reached, a homeowner may seek an injunction to stop the construction or, in some cases, compensation.
