Customer Account Management

For? residential construction: allow customers to log into my website (hosted remotely) for the following reasons: 1. login name and password to their individual project account 2. view and add to project management/ progress notes between builder and customer (like a project specific note pad or blog) 3. Update me via e-mail when a client adds to a blog 4. allow client to view invoices, change orders, statements (like a credit card/ bank? site) 5. allow client to view history of invoices and payments (like a credit card/? bank? site) 6. allow clients to pay bills online with bank account transfer or credit card