What is the ruling on renting out

Q: I work for the Arab Construction Company. The company is currently constructing a tourist city called Al-Salam Tourist Village which includes villas, flats and beach resorts overlooking the sea at Al-`Ajamy district in Alexandria. This village is designated as a summer resort for the district-goers. The village is located among other resorts or more precisely all the coastal areas at Al-`Ajamy district are used as summer resorts. People who come to these resorts never behave with proper Islamic decorum. Lack of jealousy is deeply planted in them as men and women swim in the sea together in the so called "bikini". It is noteworthy to mention that Al-`Ajamy district is located at the far end of Alexandria and the inhabitants of that district are notorious for a higher degree of moral decline and disobedience of Allah, Lord of all creation (Part No. 14; Page No. 440) than inhabitants of downtown districts. Moral decline has even reached the streets surrounding the resorts and tourist villages. The owner of the company asked the opinion of Shaykh Muhammad Husayn who permitted the purchasing and renting of the village provided that purchasing or renting of the flats should be investigated. The maximum effort done as a means of investigation was to ensure that purchase agreements of the flats were not concluded with Christians. Purchase contracts have to be concluded only with Muslims, regardless of their being conservative or not. The seemingly conservative Muslims who buy villas or flats at this village are as few as can be counted on the fingers of one hand. The majority of buyers seem to lack absolute respect for the Shari`ah of Allah, some of them shave their beards, others are smokers, others allow their wives to go to such a far extreme of displaying their charms. As we know, in Egypt people are suffering from a housing crisis. Besides, buyers will not purchase housing units at this tourist village for the purpose of residence because they are sold to be transferred in a person's possession. Only few people can afford to buy such housing units. They can afford to buy other housing units downtown at the same price for the purpose of residence. Thus the housing units at these tourist villages are only rented out as summer resorts. It is difficult to live in them during the winter because of the lack of services and severe low weather temperature dictated by the location. The questions are: 1-What is the ruling on the construction of such towns and villages where corruption is predominant? 2- What is the ruling on workers at these construction companies? It should be noted that the company (Part No. 14; Page No. 441) has other projects inside the country. 3- What is the ruling on employees at the construction site, be they engineers, contractors, or ordinary employees? 4- What is the ruling on the architect who designs such towns?