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At Anstey Horne, we provide expert Daylight and Sunlight Assessments in London, helping developers, architects, and planning consultants ensure that new developments meet the highest standards of amenity and compliance.

What Is a Daylight &amp; Sunlight Assessment?

A Daylight and Sunlight Assessment in London evaluates how a proposed development will impact natural light levels in existing and new buildings. 

In densely developed urban areas like London, access to natural light is a critical planning consideration. These assessments form a vital part of the planning process and are often required by local planning authorities.

Why Are Daylight &amp; Sunlight Assessments Important?

London’s compact, high-density environment makes it essential to balance new development with the preservation of natural light for neighbouring properties. A well-prepared daylight and sunlight assessment can:

Support a planning application with robust technical evidence

Demonstrate compliance with BRE Guidelines (BR209)

Mitigate the risk of planning objections or appeals

Safeguard neighbouring amenity and avoid planning objections

Our Daylight and Sunlight Assessment London service includes comprehensive analysis and reporting in line with the latest edition of the BRE Guide: <a href="https://bregroup.com/store/bookshop/site-layout-planning-for-daylight-and-sunlight-a-guide-to-good-practice-br-209-2022-edition" target="_blank" rel="noreferrer noopener">Site Layout Planning for Daylight and Sunlight – A Guide to Good Practice (BR209, 2022)</a>. We evaluate:

1. <a href="https://www.ansteyhorne.co.uk/news/vertical-sky-component-vsc">Vertical Sky Component (VSC)</a>: Measures daylight reaching windows

2. <a href="https://www.ansteyhorne.co.uk/news/no-sky-line">No Sky Line (NSL)</a>: Assesses daylight distribution within rooms

3. <a href="https://www.ansteyhorne.co.uk/news/annual-probable-sunlight-hours-apsh">Annual Probable Sunlight Hours (APSH)</a>: Quantifies sunlight availability to windows

4. Overshadowing Analysis: Determines sunlight access to gardens and open spaces

5. <a href="https://www.ansteyhorne.co.uk/news/daylight-and-sunlight-assessment-solar-panels">Solar Panel Impacts</a>: Evaluates potential overshadowing of renewable installations

Who Needs a Daylight and Sunlight Assessment?

Your proposed development is near residential buildings

You’re submitting a planning application for a new building, extension, or change of use

The scheme could potentially reduce daylight or sunlight to neighbouring properties

The local planning authority has requested one

Our reports are frequently submitted as part of planning applications across all London boroughs, with particular experience in high-density, sensitive, and heritage contexts.

We are one of the UK’s most experienced consultants in the field of daylight and sunlight. With a heritage spanning over two centuries, Anstey Horne combines deep technical knowledge with an in-depth understanding of planning policy and urban design.

Clear and reliable reports tailored to your project

Fully compliant assessments in accordance with BRE, BS EN 17037 and local authority standards

Expert witness services and strategic advice

Residential (single dwellings to large-scale mixed-use)

<a href="https://www.ansteyhorne.co.uk/services/daylight-and-sunlight-assessment">Detailed Daylight &amp; Sunlight Assessments</a>

Maximum Development Envelopes &amp; Optimisation

<a href="https://www.ansteyhorne.co.uk/news/internal-daylight-sunlight-assessments-a-complete-guide">Internal Daylight &amp; Sunlight Assessment</a>

<a href="https://www.ansteyhorne.co.uk/news/daylight-and-sunlight-gardens-and-amenity-spaces-bre-guidance-for-outdoor-areas">Hours in Sun for Amenity Space</a>

<a href="https://www.ansteyhorne.co.uk/news/what-is-climate-based-daylight-modelling">Climate Based Assessment</a>

<a href="https://www.ansteyhorne.co.uk/services/solar-glare">Solar Glare</a>

<a href="https://www.ansteyhorne.co.uk/services/solar-panel-assessments">Solar Panel Assessments</a>

Technical adviser to Local Planning Authorities

<a href="https://www.ansteyhorne.co.uk/news/new-bre-guidelines-daylight-and-sunlight">New British Standard EN17037 View Out Assessment</a>

Contact - Daylight &amp; Sunlight Assessments London

For a Daylight and Sunlight assessment advice from one of our London surveyors, please call our Enquiry line in <a href="tel:020%204534%203138">020 4534 3138</a>.

We cover all of London and the South East. We have live Daylight and Sunlight projects in London, Brighton, Hastings, Canterbury, Chichester and Guildford.

See links to our recent projects in London at <a href="https://www.ansteyhorne.co.uk/news/daylight-sunlight-dagenham-dock">Dagenham Dock</a>, <a href="https://www.ansteyhorne.co.uk/projects/daylight-sunlight-harrow-road">Harrow Road </a> and <a href="https://www.ansteyhorne.co.uk/projects/daylight-sunlight-stevenage-town">Stevenage Town Centre</a>.

For more information on all aspects of a Daylight and Sunlight Assessments see the <a href="https://www.ansteyhorne.co.uk/blogs/daylight-and-sunlight-assessment-london">collection of articles on our blog page</a>.

For details of our specialist Daylight &amp; Sunlight surveyors near you see our <a href="https://www.ansteyhorne.co.uk/services/daylight-sunlight-birmingham">Birmingham</a>, <a href="https://www.ansteyhorne.co.uk/services/daylight-sunlight-manchester">Manchester</a>, <a href="https://www.ansteyhorne.co.uk/services/daylight-and-sunlight-assessment-bristol">Bristol</a>, <a href="https://www.ansteyhorne.co.uk/services/daylight-and-sunlight-assessment-brighton">Brighton</a>, <a href="https://www.ansteyhorne.co.uk/services/daylight-and-sunlight-assessment-norwich-2">Norwich </a>&amp; <a href="https://www.ansteyhorne.co.uk/contact-us#plymouth">Plymouth</a> office details.

Contact us

For advice on Daylight &amp; Sunlight direct from one of our surveyors, please call our Enquiry Line on <a href="tel:020 4534 3138">020 4534 3138</a>.
If you would like us to call you, please fill in our <a href="https://www.ansteyhorne.co.uk/contact-us#contact">Contact Us</a> form and we will call you back.

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