Conservation Rooflights and Planning Permissions

Installing a rooflight can be a transformative addition to your home, ushering in natural light and enhancing the overall ambiance. Understanding the intricacies of planning permissions is crucial to ensure a seamless installation process.

Permitted Developments for Rooflights

In most cases, a rooflight installation falls under permitted developments, obviating the need for planning permission. However, specific criteria must be met to qualify:

  • The rooflight should not protrude above the highest point of the existing roof.
  • Any installed windows must maintain a distance less than 150mm above the current roof plane.
  • Side-facing windows require obscured glazing for privacy.
  • Openable windows must not be situated lower than 1.7m above the floor.


Failure to meet these conditions might necessitate additional planning permissions.

Conservation Rooflights and Planning Permissions Stella Rooflights

Listed Properties and Conservation Areas

Installing conservation rooflights in listed properties or areas with Article 4 Directions introduces additional considerations. An Article 4 Direction, issued by local planning authorities, restricts permitted development rights to safeguard the character of an area. If applicable, obtaining planning permissions becomes imperative, and consultation with planning authorities is advised.

Building Regulations Approval

While planning permissions might not be a major hurdle, obtaining approval under Building Regulations is likely. Key considerations include:

  • Structural alterations to the roof, often involving modifications to rafters or joists.
  • Demonstrating energy efficiency to prevent excess heat loss.
  • Ensuring the roof’s capacity to bear the weight of the new rooflight.


Consulting the Conservation Officer

Local Conservation Officers play a pivotal role in decision-making for conservation rooflight installations. They evaluate factors such as the property’s original characteristics, surroundings, and the local area’s character. Traditional metal frames, potential glazing bars, and flush integration within the roof line may be prerequisites.

Comprehensive knowledge of planning permissions, considerations for listed properties, and adherence to Building Regulations are vital for a successful rooflight installation. By meeting outlined criteria and consulting with relevant authorities, the process can be streamlined, allowing you to enjoy the benefits of a rooflight without unnecessary hurdles.

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The Ultimate Guide to Conservation Rooflights

Independent expert advice for architects, builders and homeowners