That is one of my current head problems. I have worked with wood for about 30 years. Without being a big head, i could build a timber frame without problem. I could do it out of 6x2 or better still wood i beams which i think are under utilised in this country. (Think Peter Stark) I dont work, so have plenty of time, and my designed house is basically a square with a double story porch on the front. It would be a doddle to build in timber. Now, blocks etc i just havn't done. I think i could, but i would be bloody slow......The chances are that i wont stay when completed, as i have no need for 5 beds, and 5 bathrooms, so will be looking to sell. My head says do it in timber in the 1/2 acre garden. ( i could build the frame in 2 weeks). But my brain says, do it in blockwork, as if you dont you are going to have an issue trying to flog it for north of £1.5million. People, as well as mortgage lenders still seem to have that "Proper, masonary house" mentality...... Or am i wrong ?