CATHERINE MANNING 10 DURHAM PLACE LONDON SW3 4ET 17 August 2015 Mr Graham Stallwood Executive Director Planning and Borough Development Royal Borough of Kensington and Chelsea Town Hall Hornton Street London W8 7NX Dear Mr Stallwood, Your reference: PP/15/04516 Proposed Basement at 5/6 Durham Place I write to object to the above Planning Application and to endorse the detailed letter of objection of Mr and Mrs Boynton of 42 St Leonard’s Terrace. This is the third planning application for a basement at 5/6 Durham Place. I have objected to the two previous applications and there is nothing in this third application to remove my objections, which concern the dangers to a beautiful, historic but unlisted property, the water table, nearby trees and finally the evident breaches to the Council’s basement policy. The terrace of Durham Place is dated 1790 and usually structures of this age and architectural interest are listed, therefore experience of building a basement (of such a depth) under such a property is very limited. The other owners of properties in Durham Place will confirm the structural fragility of the houses and the effects of building works on neighbours. The risks to the integrity of the whole terrace seem to me to be too great to permit this application to go ahead. Durham Place is close to the Thames and is in Flood Zone 3, where the Council’s flood policies recommend that no basements should be constructed. The basement is planned to descend 7m below ground level, in an area where the water table is at 4.7m. The pumping that will be required during the building works will be have to be continuous and even when the basement is 1 built, the displacement of the water, the run off and risks of flooding make a basement in this area inadvisable. The excavation work involved in the basement will affect a number of large and important trees, both the London plane tree at the north entrance to the terrace and the plane and sycamore in the gardens behind. The noise, the dust, the vibration of the excavation works, the constant flow of lorries removing debris and delivering supplies are very well known and it is not surprising that neighbours who thought they were in a conservation zone surrounded by historic buildings and so immune from basement mania should object to them. Finally, the planning application appears to contravene the Council’s own planning policy for basements (Basements Planning Policy: Partial Review of the Core Strategy. Policy CL7) on a number of points: A building which already has a basement in place before 1948 is permitted an additional single storey basement, ‘single storey’ being defined as one that cannot be subdivided to create additional floors in the future. This planning application clearly contravenes this requirement. A single storey of 7m suggests a room of Pharaonic proportions. (Para 34.3.52) Para 34.3.61 points out that basements can ‘harm the historic integrity and pose risks of structural damage to the building.’ This is a risk in the case of an eighteenth century terrace of which 5/6 Durham Place is a part. Para 34.3.63 states that ‘archaeological remains are a finite and fragile resource’ yet nothing in the planning application addresses the question of the Roman well in the garden, in which the water rises and falls with the tides. Para 34.3.70 recommends consultation with neighbours. A very slapdash construction traffic management plan (a cut and paste job with streets nowhere near Durham Place named in it) was sent to nearby Residents’ Associations, but nothing to the neighbours, even in Durham Place itself which consists of 10 houses and one apartment house: hardly too great a task to undertake. For all of the above reasons I call upon the Planning Committee to reject the planning application for a basement for 5/6 Durham Place. Yours sincerely, Catherine Manning 2