Job Management System (JMS)

I am currently using a Microsoft Excell file as a Template and copy this for each house i build The file consists of books which make up all the documentation needed to fascilitate the construction of residential houses. There are between 100 & 200 books per file of which a lot of mathematical formulaes exist between them The books consist of items such as job details, job data, estimates and budgets, contract docs, addendas, specifications, order forms etc I also have a separate file which contains appox 100 books being pricing data which i want to integrate Im looking for someone that has had experience in developing something like this before, knowing a bit about construction would be an advantage to understanding the documentation. Knowledge of something like the Databuild software package would give you good insight. Current Goals from here are to: 1. Generate a windows friendly program maintaining current cababilities (Budgets, Schedules, Orders etc) 2. Integrate the Price book into the JMS 3. Integrate other electronic items, client correspondance, house plans, house photos etc End Goal to produce a Job Management System cabable of documenting, tracking and recording progress on construciton of up to 1000 homes a year with multi user cabability. I dont know exactly how much work is involved but i expect that once a platform has been created and is serving its primary goals it will require ongoing development and adjustments