Daylight, Sunlight and Amenity – Page 5
BRE 209 tests, the 45-degree rule, overshadowing, overlooking and neighbour amenity.
Daylight, Sunlight and Amenity articles – page 5
391 articlesDaylight evidence for a roof extension on a terrace
Roof extensions sit above the windows they are accused of harming. The cases that matter are dormer cheeks near the party line, neighbouring rooflights and stepped terraces.
When a neighbour's tree is the cause of the shading
An easement of light can only be acquired against a building, so a shading tree gives you no enforceable right. The high hedges procedure is the one statutory route, and it excludes single trees.
Assessing dormer windows for overlooking and outlook
A dormer lifts the eye level above fences and hedges, which is why loft conversions attract privacy objections. The answer is a drawn sight line, not an assertion.
Daylight reporting for a listed building's fixed windows
A listed building's windows are fixed geometry, so every adjustment has to come out of the proposal. How to run the assessment, separate amenity loss from heritage harm, and present a shortfall credibly.
Modelling a neighbour's room you cannot get inside
Vertical sky component and sunlight hours need no internal access. Daylight distribution does, so here is how to derive an assumed layout from external evidence and test it so a decision maker can rely on it.
Sunlight to a neighbouring conservatory
Loss of light to a conservatory usually carries less weight than to a living room, but not none. How to assess it honestly and design the extension that gets permitted.
What a daylight report can credit for internal finishes
Reflectance is a real input and the one most often pushed too far. Defensible values, when light well finishes can be credited, and how to declare the assumptions.
Assigning room use in daylight reports without floor plans
The assumed use of a neighbour's room decides which BRE 209 test applies. A repeatable method for assigning uses from outside, and for defending the schedule.
Assessing daylight against a consented scheme next door
An extant permission next door changes what your daylight results mean. Assess against the built situation first, then add the consented case and label both.
Assessing daylight to a neighbour's rear extension rooflight
Rooflights serving a neighbour's single storey extension are the hardest daylight case in a terrace, because the standard vertical window tests do not transfer.
Rights of light compared with planning daylight tests
A planning permission is no answer to a rights of light injunction. The two regimes measure different things and the civil one has to be dealt with before you build.
Daylight in student and co-living accommodation
Daylight standards work on room function, not planning use class, so a study bedroom's classification is the applicant's choice to justify. What holds up, and when the layout has to change.
Overshadowing of a communal amenity deck
Half the usable area needs two hours of sun at the equinox, and on a courtyard podium that is decided by massing rather than landscape. How to map light zones and lay out the deck to them.
Trees, daylight and the assessment nobody agrees on
A tree blocking light is usually outside the planning system altogether. The four routes that do exist, what each can achieve, and why daylight assessments report results with and without trees.
Daylight assessments at appeal: what inspectors test
Appeal decisions on daylight turn on model inputs, honest reporting and the weight given to each affected room. How to set an alternative target value and survive cross-examination on it.
Sunlight to a north facing garden
A garden on the north side of a house sits in its own shadow, so the absolute sun on ground test is often failed before anything is built. The case then turns on how much of the remaining sunlit area a proposal removes.
Daylight in deep plan flats with a single window
A side-lit room goes dark at the rear once depth outruns head height. The fixes that work are reducing depth and adding a second aspect, not widening the window.
Amenity conditions on plant near bedroom windows
A condition limiting plant rating level at the nearest sensitive facade binds whatever the supplier promised. Design to the night time background, isolate the vibration path, and offer measurable condition wording yourself.
Re-running the daylight model for a section 73 change
Screen the amendment against four geometric parameters before commissioning anything. Where reassessment is needed, the approved scheme is the comparator that answers the planning question.
Privacy in a mews where windows face under 18 metres
The 21 metre convention has no statutory source. Where facing windows sit under 18 metres apart, the case is made with annotated sight lines, staggered openings and a plan that puts the right rooms on the right elevation.
Daylight to a school classroom next door
Classroom windows attract the vertical sky component and no sky line tests, while the sunlight criteria written for living rooms carry little weight. The playground overshadowing study is the one that decides objections.
Overbearing effect and how it differs from lost light
Overbearing effect is a site judgement about mass, outlook is about what fills the window, and daylight loss is a calculation. Loss of a view is not a planning consideration at all.
Sunlight to allotments and community gardens
Growing space counts as amenity space, so the BRE two hour test on 21 March applies. A community group can produce a usable shadow plot without specialist software.
Balcony overshadowing of the flat below
BRE 209 asks for the vertical sky component to be calculated with and without an overhanging balcony. That pair separates your balcony from your massing and changes the design conversation.
Not sure which documents your council will ask for?
Enter your postcode and PlanScope recommends the right reports for your project, then drafts them in minutes.
Enter your postcode on PlanScope