ABC | Hi! I can develop a single form, linked to background pages, which you can use to calculate your project costs. I have not worked in construction, but have worked in industries like shipping, where tables of value (fuel price at locations, distances between locations, etc) where stored in one sheet, and the form would automatically pull the values. For example, if the customer typed in "New York, NY" and "San Francisco, CA" in the main form, the distance between them automatically reads from a table, and distance-based calculations like fuel costs are calculated as well. I believe this is the behavior you'd like correct?
If you have any questions, feel free to ask! I have been doing Excel work for a long time, and have enjoyed many repeat customers due to the speed and quality of my work.
Thanks,
Cristian