We have recently been commissioned to undertake a sunlight and daylight assessment in North London (N4).
The project is relatively small involving a roof extension.
We have been provided with plan for the proposal, as well as detailed elevations, and we will prepare a before and after comparison of sunlighting and daylighting conditions.
The BRE209 guide suggests that 20% reduction in lighting levels is acceptable, most projects fall within the 20% allowance.
If you are looking for an environmental consultant in London to undertake a Sunlight and Daylight Assessment then please call or email Southwest Environmental limited we would be very happy to assist and we can also provide design advice.