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Daylight
Calculations

Daylight Calculations for Planning & BREEAM

What are Daylight Calculations and why are they necessary?

Daylight Calculations provide an objective way to assess how much natural light will be available within a building, as well as how efficiently that daylight is used. These calculations are used for a wide range of purposes—demonstrating compliance for planning, achieving BREEAM credits, meeting sector-specific requirements, and improving the design and wellbeing of building occupants. Daylight assessments can also identify the risk of glare, supporting both comfort and performance.


Many planning authorities require Daylight Calculations for projects in sensitive settings, especially in sectors such as healthcare, education, and residential development. They are a key element of the BREEAM Visual Comfort Assessment (HEA 01) and may also be requested for building design optimisation or to support applications where daylight is a material consideration.


By modelling the daylight performance of a proposed building, we can provide 3D visualisations and clear graphical outputs, so you understand the expected internal conditions. This supports better decisions, reduces project risk, and can unlock improvements to both environmental performance and occupant wellbeing.


Good daylight not only lowers energy costs by reducing reliance on artificial lighting, but is proven to support emotional health and productivity.

Send us your project details and we’ll send a quote

Our Daylight Calculation services

Detailed analysis of light levels in line with planning and BREEAM requirements, including HEA 01 Visual Comfort. Icon

Daylight factor and illuminance assessments

Detailed analysis of light levels in line with planning and BREEAM requirements, including HEA 01 Visual Comfort.
Assessment of potential glare issues and recommendations to address risks at the design stage. Icon

Glare risk evaluation

Assessment of potential glare issues and recommendations to address risks at the design stage.
Realistic visualisations and graphical representations, providing a clear picture for clients, design teams, and local authorities. Icon

3D daylight modelling

Realistic visualisations and graphical representations, providing a clear picture for clients, design teams, and local authorities.
Reports tailored for submission to planning departments, responding directly to the relevant standards or planning conditions. Icon

Planning application support

Reports tailored for submission to planning departments, responding directly to the relevant standards or planning conditions.
Fully compliant evidence packs for BREEAM credits, ensuring a straightforward route to certification. Icon

BREEAM evidence and documentation

Fully compliant evidence packs for BREEAM credits, ensuring a straightforward route to certification.
Practical recommendations to optimise daylight and balance comfort, energy use, and cost. Icon

Specification and design advice

Practical recommendations to optimise daylight and balance comfort, energy use, and cost.
Standard and expedited options available, with clear communication throughout. Icon

Rapid turnaround

Standard and expedited options available, with clear communication throughout.
Detailed analysis of light levels in line with planning and BREEAM requirements, including HEA 01 Visual Comfort. Icon

Daylight factor and illuminance assessments

Detailed analysis of light levels in line with planning and BREEAM requirements, including HEA 01 Visual Comfort.
Assessment of potential glare issues and recommendations to address risks at the design stage. Icon

Glare risk evaluation

Assessment of potential glare issues and recommendations to address risks at the design stage.
Realistic visualisations and graphical representations, providing a clear picture for clients, design teams, and local authorities. Icon

3D daylight modelling

Realistic visualisations and graphical representations, providing a clear picture for clients, design teams, and local authorities.
Reports tailored for submission to planning departments, responding directly to the relevant standards or planning conditions. Icon

Planning application support

Reports tailored for submission to planning departments, responding directly to the relevant standards or planning conditions.
Fully compliant evidence packs for BREEAM credits, ensuring a straightforward route to certification. Icon

BREEAM evidence and documentation

Fully compliant evidence packs for BREEAM credits, ensuring a straightforward route to certification.
Practical recommendations to optimise daylight and balance comfort, energy use, and cost. Icon

Specification and design advice

Practical recommendations to optimise daylight and balance comfort, energy use, and cost.
Standard and expedited options available, with clear communication throughout. Icon

Rapid turnaround

Standard and expedited options available, with clear communication throughout.

Our Daylight Calculation process

01

Project scoping and brief
We review your plans, project goals, and any planning or BREEAM requirements, then provide a clear proposal and quote.

02

Daylight modelling and assessment
Using industry-leading software, we model daylight levels, evaluate performance, and identify opportunities for improvement.

03

Glare and comfort analysis
We assess for risks such as excessive glare and ensure recommendations support both wellbeing and compliance.

04

Reporting and submission
Comprehensive reports and graphical outputs are produced for inclusion in planning submissions or BREEAM assessments.

05

Follow-up and ongoing advice
Our team remains available for queries or further advice, helping you respond to feedback or optimise designs if required.
Why enevo for Daylight Calculations? Image
Why enevo for Daylight Calculations? Icon

Why enevo for Daylight Calculations?

  • Industry expertise: Our consultants combine deep knowledge of daylight modelling, planning, and compliance with hands-on experience in architecture, engineering, and construction.

  • Value-focused approach: We apply the ‘Fabric First’ principle to reduce build costs and avoid unnecessary technologies, including a free specification review on every project.

  • Guaranteed compliance: 100% pass guarantee on all our compliance services—free guidance provided to help you achieve a pass as efficiently as possible.

  • Fast and reliable: Standard turnaround is rapid, with 24-hour delivery available when needed. New build EPCs can be produced on the same day as your air test.

  • Comprehensive service: We offer complementary services such as BREEAM, Thermal Modelling, SAP Calculations, and SBEM, giving you a single partner for all compliance needs.

  • Trusted by clients: Award-winning, approachable, and committed to saving you time, money, and stress at every stage.

Enquire Now About Our Daylight Calculations Service

Enquire Now

Enquire Now About Our Daylight Calculations Service

Enquire Now

How can we help you
with your project?

Testimonial IconTrusted, Time And Time Again

5 Star Rating

Harry gave me excellent advice and clear understanding on what BREEAM means as well about the specific accredited assessing required by professionals like Harry.

Angela Singh

5 Star Rating

Very efficient and professional service. Cant recommend enevo enough, glad I chose them for my project.

William Brannon

5 Star Rating

Very impressive on all aspects of energy calcs. Responsive and cost competitive. Highly recommended

Nick Spencer

5 Star Rating

enevo are always helpful, friendly and efficient in carrying out SAP calculations for our clients.

Lizzie Hicks

5 Star Rating

Dan at enevo has completed for us SBEM Calculations and EPC Certificates for 6 commercial units on an industrial estate. The cost of the works was very competitive and the service we received was second to none. With very limited time to get these works completed Dan worked round the clock (and into his annual leave!!) to ensure that our completion date was achieved with very little notice. Would highly recommend!

Mollie Belton

5 Star Rating

We have always found enevo to provide an excellent service in the preparation of SAP Calculations and Assessments as well as EPC Certificates for projects that they have worked on for us. They are also reasonably priced so we would certainly recommend them to anyone looking for this type of service.

Martin Booker

5 Star Rating

Used enevo from start to completion of our recent project of 2No. new builds. Services included SAP/EPC and property air testing. Great service, understanding of requirements and cost. Person friendly company and good with communication.

Mark Radcliffe

5 Star Rating

Very efficient, personal, professional service, with a quick report turnaround. Highly recommended if you're a self-builder trying to navigate the complexities of the latest regulations.

Edward Broadhead

5 Star Rating

Always efficient and prompt service, enevo are an asset to my company, having used their services on multiple developments I wouldn't hesitate to recommend them.

Mac Chappell

5 Star Rating

Great service with a fast turnaround. Communication was excellent throughout. Richard the engineer was polite and professional. Will certainly be using enevo again.

ECO PROPERTY DEVELOPMENTS LTD

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We’re Ready To Help

Daylight Calculations for Planning & BREEAM

We’re Ready To Help

Daylight Calculations for Planning & BREEAM

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