standard in cm.e.g if u have a room of 550 x 550 cm, for the foundation calculate as follow:P = 550 + 550 +550 +550 = 2200 cmR = depend on land and other factors, take for example 4 rows as per standardnow u have B = 2200/46 * 4 = 191 blocks- from foundation to win level 4 rows, from win to lint level 5 rows, after lint 2 rows try it! 2 Likes Re: Cost Of Building A House In Nigeria by ajileko: 6: