Daylight & Sunlight Assessments for Developers
Daylight and sunlight reports led by a former London developer, built to help your scheme through planning.
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All the reports you need, from early stage to planning.
Internal Daylight Reports
BS EN 17037 assessments of SDA and SE for residential and commercial spaces.
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Permitted Development Conversions
Internal Daylight and sunlight assessments to support permitted development applications.
Maximum Envelope Testing
How high can you go? We test limits and optimise development potential.
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Technical expertise, commercial focus.
— Over 400 reports completed across the UK
— Fast turnaround, typically 4-5 working days
— Fixed fee agreed before you commit
— Practical advice that protects unit numbers and viability
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A proven process that delivers.
01 Receive Plans — CAD, PDF and 3D models.
02 3D Modelling — accurate SketchUp models.
03 Specialist Analysis — BRE-approved software.
04 Quality Review — checked by our senior team.
05 Defensible Report — clear, planning-ready.
Added value at every stage.
Reduce planning risk
Increase unit numbers
Protect project viability
Frequently asked
questions
Everything you need to know before ordering a report.
Still need help?
Please reach us at info@sunlightassessments.co.uk
if you cannot find an answer to your question.
What is the target compliance rate for scheme performance?
While there is no fixed pass mark, schemes are generally expected to achieve a high level of compliance. A small number of non-compliant rooms is often acceptable, particularly on constrained urban sites, provided the majority of habitable rooms meet the recommended daylight and sunlight targets.
Should surrounding schemes be included to show cumulative effects?
Yes, where relevant. Existing buildings and approved developments in the surrounding area can have a significant influence on daylight and sunlight levels and should be considered to ensure the assessment reflects the likely built environment at the time the scheme is completed.
Can you assess multiple design options to help us choose the best scheme?
Yes, we can test several massing or layout options in parallel so you can compare their daylight and sunlight performance alongside other design and commercial factors before committing to a final scheme.
How are daylight and sunlight assessments priced for developments?
Every report is a fixed fee, agreed before you commit. Development fees depend on the number of units and neighbouring properties that need testing, and whether you need a neighbour impact report, an internal (scheme performance) report, or both.
Use the instant calculator for a quick estimate, or send us your plans for a confirmed fixed-fee quote.
Ready to take your scheme to planning?
Send us your drawings and we'll show you where your scheme stands and how to strengthen the case, with a fixed fee before you commit.
or call 01962 809155
Specialist daylight, sunlight and overshadowing assessments for planning and development across the UK.
FOR ALL NEW ENQUIRIES - please fill out the contact form.
37/39 Southgate Street, Winchester Hampshire SO23 9EH
15189362
