CHAPTER II. OF THE SOURCES OF THE GENERAL OR PUBLIC REVENUE OF THE SOCIETY.

The building-rent is the interest or profit of the capital expended in building the house. In order to put the trade of a builder upon a level with other trades, it is necessary that this rent should be sufficient, first, to pay him the same interest which he would have got for his capital, if he had lent it upon good security; and, secondly, to keep the house in constant repair, or, what comes to the same thing, to replace, within a certain term of years, the capital which had been employed in building it. The building-rent, or the ordinary profit of building, is, therefore, everywhere regulated by the ordinary interest of money. Where the market rate of interest is four per cent. the rent of a house, which, over and above paying the ground-rent, affords six or six and a-half per cent. upon the whole expense of building, may, perhaps, afford a sufficient profit to the builder. Where the market rate of interest is five per cent. it may perhaps require seven or seven and a half per cent. If, in proportion to the interest of money, the trade of the builders affords at any time much greater profit than this, it will soon draw so much capital from other trades as will reduce the profit to its proper level.