The four-step 'Tenacity test' for view sharing requires assessment of: (1) the value of the views affected; (2) from what part of the property views are obtained; (3) the extent of the impact; and (4) the reasonableness of the proposal causing the impact. A development that breaches planning controls faces a lower threshold for view impact to be considered unreasonable — even a moderate impact may be unreasonable where there is non-compliance. A slope of under 10% is not 'significantly sloping' for the purposes of height standard exceptions. Compliance with a maximum height limit does not entitle an applicant to a building envelope at that height over the whole site.
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