Hi,   We're about to start our project - 250m² 1.5 story house with basement on a sloping site in Holywood, Co. Down.   Drawings all done, just waiting for planning to come through. My background is an engineer/project manager in the water industry, so I'm planning on using a lot of innovative, rapid, and non-traditional construction methods - focus on safe, rapid construction and simplicity and reduced dependence on trades. We're also aiming for passive levels of insulation