I am hoping to move house soon and if so will want to replace the old wooden garage at the property with a new one. I want the new garage to double up as a workshop and be around 1.5 x width of a standard single garage. I am hoping for some advice with regards to materials to help me work out a cost. I'd like the inner walls to be block, but a strong block that can take heavy shelves and brackets etc rather than the plaster type. Is concrete the best / cheapest option ? I then want an insulated cavity and probably block or brick outer walls. The house brick is a dark red rough surface 1960's brick which I think is still available. What would normally work out cheapest, brick or block and pebbledash both taking materials and labour into account ? Are there any other options ? Also the outer side of one wall will be in accessible once built due next doors garage so could not be rendered. Is there any solution here ? Will bare blocks soak moisture through ? I wouldn't want to sacrifice the quality of build in the name of economy but funds will be limited on this one as the wife wants a kitchen. If I get this property the garage is the first job so any advice will be very gladly recieved.