First step before to start construction is to get quantities of materials required and the total cost of materials and also that of the labour.By doing so you are saved from many problems and be able to complete your project within your budget.The format of estimated cost is like this;
Desc. Qty. Rate Amount
Excavation 5000 5 25000
Bricks 50000 10 500000
Cement 1200 600 720000
Steel 13 ton 90000 1170000
Sand 3500 22 42000
Crush 5500 48 264000
Doors 20 25000 500000
Windows 12 30000 360000
Paint works 15000 25 375000
S0 & so--
In this way get calculated all quantities.These quantities are of a 10 marla house and rates are ones prevailing in islamabad. However quantities are estimated as exact quantities are calculated from working drawings