Daylight & Sunlight Assessments
Expert assessments to ensure new developments receive adequate natural light, comply with planning standards, and protect neighbouring properties.
Request a QuoteUnderstanding Daylight & Sunlight Assessments
Assessments evaluate how much natural light new buildings and outdoor spaces receive. They help ensure comfortable interiors, minimise overshadowing of neighbours, and guide urban developments toward sustainable, light-filled design.
Our Assessment Process
1. Site & Design Review
Evaluate layouts, window orientation, and surrounding structures for daylight access.
2. Light Modelling
Simulate daylight (VSC, NSL) and sunlight (APSH) for rooms and external spaces.
3. Impact Assessment
Analyse potential effects on neighbouring properties and amenity spaces.
4. Recommendations
Provide mitigation strategies to optimise natural light and support planning approval.
Key Factors Assessed
- Vertical Sky Component (VSC) – Measures daylight visible from windows.
- No Sky Line (NSL) – Evaluates daylight distribution within rooms.
- Annual Probable Sunlight Hours (APSH) – Calculates sunlight exposure for rooms and gardens.
- Overshadowing – Assesses impact of new buildings on neighbours.
- External Amenity Spaces – Ensures gardens, courtyards, and playgrounds receive sunlight.
Planning Compliance
Our assessments align with BRE Guidelines (BR209) and provide evidence for local planning authorities while protecting neighbours’ access to light.
Assessment Methods
We use 3D modelling, CAD software, and advanced simulations to deliver accurate results for both new developments and existing properties.
Optimised Layouts
Position windows and rooms to maximise daylight and sunlight exposure.
Shading Solutions
Reduce glare while maintaining adequate natural light inside rooms.
Neighbour Impact Management
Minimise overshadowing of adjacent properties and amenity spaces.
Outdoor Space Enhancement
Ensure gardens and courtyards maintain usable sunlight throughout the year.