"home industry" means an industry carried on in a building (other than a dwelling-house or a dwelling in a residential flat building) under the following circumstances:
(a) the building does not occupy a floor space exceeding 50 square metres and is erected within the curtilage of the dwelling-house or residential flat building occupied by the person carrying on the industry oron adjoining land owned by that person; and
(b) the industry does not-
(i) interferes with the amentiy of the locality by reason of the emission of noise, vibration, smell, fumes, smoke, vapour, steam, soot, ash, dust, waste water, waste products or grit, oil or otherwise; or
(ii) involves exposure to view from any adjacent premises or from any public place of any unsightly matter; or
(iii) require the provision of any essential service main of a greater capacity than that available in the locality.