The following calculations are based on the construction of two hundred and fifty (250) two-story houses in a continuous row. This also includes a continuous glass enclosed roof promenade 10 ft. wide and 8 ft. high. The estimate gives the complete construction of these buildings, including the tunnel for the proposed monorail road, also a central power plant, including kitchen, laundry and such other equipments as may be necessary for the proper maintenance of such an establishment. It further includes all mains, pipes, wires, so that when the plant is completed it would be ready to turn over to the occupant in a completely finished condition. Each house will be equipped with hot water heat furnished from a central station; electric lights, electric power, telephone connected with central station, vacuum sweeping system, complete plumbing and water supply. The calculations which are given herewith are fairly close and without doubt under proper management and accessible facilities for getting material the work can be done for the estimate given. 250 houses, 21´ wide × 20´ deep, with seven rooms well furnished as per illustration @ $1,800 each $450,000 Five coöperative centers, tower-like in effect 50,000 Wiring houses based on $50 per house 12,500 Heating, ” ” ” $150 ” ” 37,500 Plumbing, ” ” ” $125 ” ” 21,250 Laundry machinery 8,000 Cooking apparatus 12,000 Boiler plant and heating apparatus 40,000 Refrigerating plant 10,000 Electric plant and switchboard, telephone 40,000 Wiring, feeder mains, etc. 12,000 Brick Chimney 4,000 Sewerage system 20,000 Water supply and mains for irrigation and domestic use 40,000 Gas and vacuum producers and holders 10,000 ------- One mile of house--equipped $777,250 Cost per house--equipped $3,109 The principal fixed charges for labor, coal, interest on the investment would be as follows: Chief engineer $2,400 Two (2) assistant engineers, $80 per month, $960 each 1,920 Four (4) firemen, $60 per month, $240 each 2,880 Two (2) extra men, $50 per month 1,200 Chef, $75 per month 900 Three (3) cooks, $40 per month 1,440 Four (4) helpers, $20 per month 720 One (1) laundryman, $100 per month 1,200 Ten (10) women, $20 per month 2,400 ------ Total labor cost $15,060