Daylight and Sunlight Assessments in Redbridge

Most of the daylight and sunlight work we do in Redbridge is on semi-detached and detached houses in Woodford Green, South Woodford, Wanstead and Barkingside, where side extensions, first-floor rear extensions and loft conversions sit a few metres from a neighbour's flank windows and conservatory. The other recurring job is the backland plot: a new house squeezed onto garden land behind an existing one, with neighbours on three sides. We also see conversions and small blocks of flats around Ilford, Gants Hill and Seven Kings, where the council wants both the neighbours and the new homes tested.

Redbridge officers tend to ask for a BRE assessment once a scheme clearly projects beyond a neighbour's rear wall or adds a storey beside a side window. Just as often it is the homeowner or architect who wants the report before submission, so that a neighbour's concern about loss of light can be answered with numbers rather than reassurance. Both of the examples below started that way.

Recent daylight and sunlight assessments in Redbridge

21 Kings Avenue, Woodford Green, IG8: side and rear extensions to a semi

A replacement single-storey side extension and a single and part first-floor rear extension, with an independent report wanted for the neighbours on both sides. One neighbour's rear orangery, missing from the survey drawings, was built into the model from aerial imagery and planning records. Four side-facing windows at one neighbour first appeared to fall short of the sunlight guideline, but the neighbour's floor plan showed they serve a toilet, a store and a hallway, which BRE does not require to be tested. All habitable rooms and both gardens met the guidelines, reported separately for each household.

Planning application 1277/25 was approved on 21 October 2025.

Backland plot off Ridgeway, Woodford Green: new detached house

A new detached house on land behind an existing home, with a bungalow and two houses on Ridgeway wrapping around the plot. The architect needed a neighbour report to submit with the planning application. We tested the windows and gardens of all three neighbours for VSC, annual and winter sunlight, and sun on the ground on 21 March. No shortfalls were recorded, and the report was issued in September 2025 for the practice to submit with its planning application.

What Redbridge planning officers look for

Redbridge determines applications against the Redbridge Local Plan 2015 to 2030, adopted in March 2018, read with the London Plan. Its "Achieving Quality Design" policies cover good design and local character alongside household extensions, basements and heritage, and the thread running through them is that development must protect the living conditions of neighbouring occupiers, including daylight, sunlight and outlook.

For houses, the detail sits in the Housing Design SPD, which replaced the 2012 Householder Design Guide. It expects extensions to be subordinate to the host building and to consider loss of outlook, overshadowing and sense of enclosure to neighbouring homes and gardens. Where a proposal is likely to affect a neighbour's light, officers expect the impact to be demonstrated against BRE 209 (2022 edition), the national guidance for daylight and sunlight. The adopted Local Plan is at redbridge.gov.uk/planning-and-building/planning-policies/local-plan and the SPDs, including the Housing Design SPD, at redbridge.gov.uk/planning-and-building/planning-policies/supplementary-planning-documents.

When you need an assessment in Redbridge

• Two-storey or first-floor side extensions on the semi-detached streets of Woodford Green, Barkingside and Clayhall, where the neighbour's side windows are a few metres away
• Deep rear extensions on the Wanstead and South Woodford terraces, particularly where a neighbour has a conservatory or orangery against the shared fence
• Backland and garden-plot houses with neighbours on more than one side, which Redbridge officers almost always expect to see tested
• Flats and conversions around Ilford Lane, Gants Hill and Seven Kings, where the new homes' own daylight is assessed as well as the neighbours'
• Any scheme where a neighbour has already raised a concern about loss of light, whether or not the council has asked for a report

How we work

You send drawings and photographs; we build the 3D model of your scheme and the surrounding houses ourselves, so no site survey is needed in most cases. The fee is fixed and agreed up front, and the report usually takes 4–5 working days from receiving everything we need. Our daylight and sunlight assessment page explains the service in full. Every report runs the four BRE tests:

• VSC (vertical sky component) for daylight at each neighbouring window
• NSL (no-sky line) for daylight distribution within rooms
• APSH (annual and winter probable sunlight hours) for windows facing within 90 degrees of south
• Sun on ground for gardens: two hours of sun across at least half the area on 21 March

The methods are explained on our VSC, NSL and APSH page and the thresholds on our BRE guidelines page.

Frequently asked questions in Redbridge

My neighbour has a conservatory right on the boundary. Does it get tested?

Yes. BRE treats conservatory glazing as windows to a habitable room if the conservatory is lived in, and we model the garden behind it for the sun-on-ground test. Where there is no drawing of it, we build it from aerial imagery, as we did at Kings Avenue.

Can I get a separate report for each neighbour?

Yes. For a scheme with neighbours on both sides we test both for one fee, and if you would rather hand each household only their own results we split the report into two documents at no extra charge.

Does Redbridge need a report for a backland house in Woodford or Wanstead?

Expect to provide one. A new dwelling on garden land usually has existing homes on two or three sides, and officers want the windows and gardens of each tested against BRE 209 before they will weigh the amenity impact. We can run a quick first look on massing drawings before the design is fixed.

Get a fixed-fee quote

Send us your drawings through our contact page or try the price calculator for an instant figure. You can also call Nick on 01962 809155 or email nick@sunlightassessments.co.uk; if your site is over the borough boundary, see our Waltham Forest page.