I wrote a program once for the original IBM PC that calculates material quantities and costs based on the pricing at a local lumberyard. I'm not even sure where the code is now. It would be an interesting project to enhance because it could go out on the web and fetch materials and prices from vendors like Lowes and calculate price variations hourly. But as another poster mentioned here, you need to consider the timing. In house construction timing is a very important factor in controlling costs. From the excavator to the roofer, you need to plan and time the work of a large number of specialists plus usually a crew of laborers. I don't know what to suggest these days. Bob Cochran Greenbelt, Maryland, USA Frank Cox wrote: > Does anyone have any recommendations for construction estimating software? > >