The Wealth of Nations by Part 2 Chapter 1 Page 11

houses, well built and properly taken care of, may last many centuries. Though the period of their total consumption, however, is more distant, they are still as really a stock reserved for immediate consumption as either clothes or household furniture.

The second of the three portions into which the general stock of the society divides itself, is the fixed capital, of which the characteristic is, that it affords a revenue or profit without circulating or changing masters. It consists chiefly of the four following articles:

First, of all useful machines and instruments of trade which facilitate and abridge labour:

Secondly, of all those profitable buildings which are the means of procuring a revenue, not only to their proprietor who lets them for a rent,