The mayor has two months from receipt of the application to check whether the income and housing conditions set out in 1° and 2° of article L. 434-7 have been met. He has an equal period, if the matter has been referred to him for this purpose by the Prefect or, in Paris, by the Police Prefect, to issue an opinion the respect for the essential principles governing family life in France, as provided for in 3° of the same article.