Daylight and Sunlight Surveyor in Portsmouth

Daylight and sunlight reports support planning applications across Portsmouth, particularly on the dense Victorian terraced housing, naval heritage sites, and the regeneration of city centre and waterfront plots. Reports follow the BRE guidelines (2022 edition) and cover the technical analysis, design context, and any massing advice that helps the scheme work within Portsmouth City Council expectations.

Planning-Stage Light Studies in Portsmouth

Portsmouth is one of the most densely populated cities in the UK, and the planning environment reflects that. Portsmouth City Council reviews a steady caseload of city centre regeneration, mid-rise residential blocks, Victorian terraced infill and rear extensions, and waterfront mixed-use proposals across Southsea, Cosham, and the Old Portsmouth area. Daylight and sunlight assessments come up regularly because existing density on most streets means new buildings often affect neighbouring properties or amenity space.

Our team prepares these reports under RICS regulation from our Hampshire office, with BRE 209 (2022) as the working reference. Site attendance across Portsmouth runs faster than for London-led practices, and where works cross a shared boundary, party wall services sit alongside the daylight piece. For larger developments that could affect a neighbour's legal entitlement to light, rights of light assessments sit alongside the planning piece.

Daylight + Sunlight

Using the knowledge we have gained throughout our involvement in projects of differing size and complexities, we are able to apply the criteria within the BRE guidelines and produce comprehensive reports to accompany a planning application.

When assessing daylight and sunlight, we work with a professional team to try and achieve the best outcome for a site, whilst respecting the neighbouring properties’ access to daylight and sunlight. We will also provide advice on how the design of potential residential accommodation can ensure access to good levels of daylight and sunlight.

Services Provided

  • Initial Site Appraisal

  • Daylight + Sunlight Analysis

  • Overshadowing Analysis

  • Sunpath Analysis

  • Assess the impact of existing trees on a proposed development

  • Produce detailed reports to accompany planning applications

What does a daylight and sunlight surveyor do in Portsmouth?

The work covers the proposed scheme drawings, an initial site appraisal, and a 3D model of the development and the affected neighbouring properties. The BRE 209 analysis then runs Vertical Sky Component for daylight, Annual Probable Sunlight Hours for sunlight, and No Sky Line where room geometry matters to the result for the proposed scheme.

Overshadowing analysis on ground-level amenity tests the 21 March sun position recommended in the guidance. Sunpath studies cover seasonal access where these add useful evidence, particularly on south-facing seafront plots and the courtyards within the denser Victorian terraced streets. Trees within the impact zone are factored in where they materially affect the outcome.

A typical turnaround is 2 to 3 weeks from instruction. Calls are answered by a qualified surveyor rather than a call centre, and a free initial assessment sets out scope before any fee is committed. This is a bespoke surveying service shaped to each scheme.

I have worked with CHP for a number of years, obtaining advice from them with regard to daylight and sunlight. They provide exactly what our clients require and work closely with us to resolve any issues, should they arise.

- Andrew Ryley , DLBP

What happens if a Portsmouth scheme falls short of BRE 209 targets?

Falling short of BRE 209 reference values does not block consent on its own. The figures are guidance and need to be read against the local context. Portsmouth City Council will look at existing density, the orientation of neighbouring properties, and whether the design has done what it reasonably can to protect light access on what are often constrained inner city or terraced plots where existing form is tight and small changes in massing can shift the result.

A well-argued report sets out the shortfall, explains the cause, and shows the design steps taken to mitigate it. Reports are turned around in 2 to 3 weeks. The free initial assessment is the way in for borderline cases or for early advice on whether a full study is needed at this stage.

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Head Office
2-6 Boundary Row
London, SE1 8HP

Essex Office
2-6 Boundary Row
London, SE1 8HP


020 3714 4090

Get in touch.

Head Office
2-6 Boundary Row
London, SE1 8HP

Essex Office
2nd Floor, 10 High Street
Wickford, Essex
SS12 9AZ


020 3714 4090
enquiries@chpsurveyors.com