Hi! We are converting an old coachouse and have just knocked a hole through from one room into the (soon to be) downstairs loo. There is an existing lintel and a difference in height between the 2 rooms of about 52 cm and we are planning to put 3 steps down. My question is this: do these 3 steps consititue a staircase under building regs (we have problems with the height of the lintel- will be just below 2m on the final step as we pass under it. Any advice gratefully recieved. Cheers Cath