Rights of light - What a minefield this topic is when developing or extending
a property. This is potentially one of the most subjective Planning issues
their is. Most Planning Departments will have guidance but I guarantee it
will be specific in parts and definitely woolly or non specific in other
areas leaving the subject wide open to interpretation.
One of the most common areas for debate is with regard to side windows on
neighbouring properties. The general rule of thumb is whether or not the
neighbours side window is a principal or secondary window. If if is the only
principal window for a neighbours room then the chances are the Planners
will pay great attention to your development or extension. They will want
to be satisfied that the window is not interrupted from skylight by your
building project. Secondary side windows on the other hand to habitable rooms
or windows to non habitable rooms are far less contentious and are often
ignored by Planning Departments in their impact assessments. However, this
is only a rule of thumb and surprises do sometimes occur. These surprises
often arise from neighbour induced objections where the Planning Officer
is forced to stick out his neck and make a case to support your scheme against
that of the neighbours vitriol - you don't see many headless Planning Officers
these days do you - you get my point.
What about the scientific proving of light issues I hear you ask to override
the Planning Officers negative opinion? Well yes their is guidance from the
BRE called 'Site layout planning for daylight and sunlight - A guide to good
practice' by PJ Littlefair. However, this £55 document is seriously
complicated should the need arise for proving diagrams using Waldram diagrams.
The novice will never understand it and the same applies to most Planning
and Appeal Officers so you are advised to avoid the scientific approach like
the plague. Even the official chapters of the guide clearly state that...."The
advice given here is not mandatory and this document should not be seen as
an instrument of Planning Policy" However, the guidance on whether or not
your building works actually obstruct the light to the neighbours window
is actually very useful in proving to the Planners that you DO NOT need to
prove by calculation any loss of light. You would be surprised when you do
work out this 25 degree vertical reference line of light just how close some
new buildings can actually go to the troublesome windows. Therefore, if your
getting resistance to you scheme on light issues, go get this BRE Guide first
from any good stationers or the BRE direct - it could be the best £55
you have spent in helping to get your scheme recommended for approval.
In most rights of light issues, the pragmatic and practical assessment approach
is often more productive than the scientific process unless you are dealing
with a freshly qualified Development Control Officer who can often recall
the theory of these Waldram Diagrams with distinct ease, I would stick to
the commonly understood simplistic approach of 'fact and Degree' in your
negotiations.
From a legal stand point, most solicitors will advise you of the 20 year
rule where a neighbour has a prescriptive right to light if they have enjoyed
'uninterrupted' light for a continuous 20 year period. Now solicitors love
the BRE scientific approach as it is a potential fee earning category for
them in defending upset neighbours or for fighting a scheme through the appeal
process for a developer. Unless you have a large pocket for to absorb abortive
fees stay well clear of these sharks and only use them as a last resort.
The conclusion to side windows and right of light is this - Most neighbours
that have a side window facing your development or extension will complain
to the Planning Officer. Just because you chat over the fence every weekend
when hanging out the washing will not automatically preclude that neighbour
from complaining during the consultation process. Therefore completing a
risk assessment of these windows first is vital . If you discover a neighbours
principal window to a habitable room on the side of the property adjacent
your own building works DO NOT IGNORE IT. Adjust the design of the new building
to take this window into account. There are other clever tactics and arguments
you can employ that could allow closer development if there is no other option
for your scheme.
Our 'Maximum Build Planning Guide' explains further side window issues in
more detail and sets out various risk assessment procedures and tactics that
you can incorporate within your scheme when dealing with rights of light
issues. I would not advocate submitting any Planning scheme until you have
assessed these affecting side windows and prepared your defence - you have
been warned.
Our 'Maximum Build Planning Guide' explains further the tactics involved
when developing land or a site for residential use and how to give yourself
the best chance of being granted planning permission.