Construction Business App with CRM Integration

I want to make an app for Construction business also should integrate CRM, ERP and similar things. The app should also be linked on the domain so that all the data can be viewed on the desktop via cloud. This app will also have different models which will be dealing with customer lead generation, customer data stages of construction with Site photograph, day-to-day reports, monthly and quarterly reports must have flexibility to fetch any data. Any time also must have many number of users with different roles. It should be a role based module. That must have entire construction management module, which will include inventory Management, Daily report, Daily attendance of staff and labour and other necessary things related to construction management