Dennis Carlton-Conway of Pinner Hill had challenged the Harrow LBC's decision to give planning permission to his neighbours, Mr and Mrs Al-Bustani, also on Southacre Way.
Mr Carlton-Conway had claimed that the extension proposal conflicted with a local planning policy that required some planning applications to be dealt with by a full planning committee, rather than by the chief planning officer acting under his delegated powers to determine proposals on his own.
He had sought to have the council's approval for the planned extension quashed, and reconsidered by a full planning committee.
He claimed that Southacre Way was a modest three house development, on land adjacent to green belt land and described as an area of special character and a conservation area and argued that the planned extension conflicted with planning policy under the local Unitary Development Plan, and with the council's own guidelines.
He claimed that in the circumstances consent could only be given by the members of the council's appropriate planning committee and that the planning officer had exceeded his powers in granting consent.
His challenge centred on claims that the extension in question was a two-storey extension and that such developments could not be decided by the planning officer alone.
However, dismissing the challenge and making the costs order the judge said that in his judgment the planning officer was entitled reasonably to conclude that the proposed extension was not a two storey extension within the meaning of the council's Guidelines on House Extensions.
He continued: 'It follows that Mr Jones (the planning officer) had authority to grant the planning permission in this case.
STRAND NEWS SERVICE