Daylight and sunlight report in Southwark

Flats, tenants and why the neighbour count is high

Households in Southwark are mostly flats, and only 28.9 per cent of them own their home. A single rear addition to a house can face windows of several flats in the block behind, and the BRE tests are applied room by room. A bedroom that already sees little sky has less to lose before the guideline is breached, which is why existing low light is often the deciding fact.

The council's Householder development SPD sets the form officers expect for alterations. We test that form against real window positions, and report whether a design inside the guidance still takes meaningful light from a neighbour.

Gardens are scarce, with 17.6 per cent of the borough's land in domestic gardens in the Greater London Authority's survey. Overshadowing of a small yard has a large effect on its usability, so the garden test deserves attention.

Heritage and Article 4: the controls that do bite here

Southwark publishes 53 conservation areas and holds 480 Article 4 directions. Historic England lists 919 entries in the borough and 36 places on the Heritage at Risk Register fall inside it.

Those numbers matter more than any validation line. Under an Article 4 direction, work that would otherwise be permitted development needs a planning application, and a planning application invites neighbour comment on light. The conservation area and the listed building also limit how far a design can be reshaped when the daylight result is poor, so we look for subtle changes, such as eaves height or the position of a window, before a larger one.

If you are not sure whether your road is covered, the free check looks it up first.

What Southwark grants

In the latest published year the council decided 558 householder applications and granted 94.8 per cent of them, with 95.3 per cent on time. Smaller schemes were granted at 90.2 per cent across 560 decisions.

High grant rates do not mean objections are ignored. They suggest that applications reach the council in good shape, and light evidence is part of good shape. For the wider argument, our planning consultant service in Southwark can run the case, while the basement impact assessment in Southwark covers the ground and water side of any dig.

How we build the report

We survey your house, photograph the surrounding elevations and build a three-dimensional model of the street as it is. Then we add the proposal and run the tests: vertical sky component at the neighbouring windows, daylight distribution in their rooms, sunlight hours where orientation calls for it, and overshadowing of gardens.

The written report names each window and gives plain-English findings. The BRE guide is advisory and London policy asks for flexibility on dense sites, so we say where a shortfall might be reasonable in the context. A second chartered technologist checks the geometry before issue.

Our planning drawings in Southwark come from the same model, so a change to the roof moves the drawings and the light figures together.

Cost and next step

There is no list price. We give a fixed fee after a free constraints check, based on the neighbouring windows to be tested and the site. Send the address and a sketch.

Our daylight and sunlight overview explains the method, and the architectural drawings page for Southwark lists our other work in the borough. Neighbours differ in what they ask for: see Lambeth and Lewisham.