137 Marsh Lane, London, NW7 4EY

Main issues, as the Inspector framed them

• whether the development amounts to inappropriate development in the Green Belt having regard to the Framework and relevant development plan policies
• the effect on the openness of the Green Belt
• the effect on the character and appearance of the area, including whether the development preserves or enhances the character or appearance of the Mill Hill Conservation Area, and the effect on the setting of any listed building
• if the development is inappropriate, whether any harm by reason of inappropriateness, and any other harm, is clearly outweighed by other considerations, so as to amount to the very special circumstances required to justify the development

What decided it

The outbuilding's poor design and rudimentary appearance causes less than substantial harm to the heritage assets that is not outweighed by the operational and economic benefits it provides, as alternative provision could achieve the same benefits while respecting the sensitive location.