Friends, family, neighbors, co-workers, former customers (my 'day job' is construction) who I do work for at thier 2nd, 3rd, or 4th homes on the lakes in our area that are 400K and up.

If you do a search you will find that they are very similar to these custom built homes at a far, far lower price, comparable sizes, equal quality and readily available through many manufactured home builders.

The card would give customers a 10% discount.

Repair Estimation/Budgeting - Ability to create detailed Scopes of Work & repair costs budgetsBudget Tracking - Ability to track your actual expenses against your initial budgetScheduling - Ability to create a project plan & track project progressChecklists/To Dos - Ability to track daily to-dos and checklists of items that need to be completedCalendars - Ideally all of your Schedules & To-Dos feed into a Calendar that you can use to manage all of your projects in one location.Document Management - Place to store project documents and photosHere are some Project Management tools that you might consider:Trello/Zoho Projects/Basecamp  - General project management software that includes tasks, Gantt scheduling, calendars, project forums, document storage & team collaboration toolsBuilderTrend / Co-Construct - These tools are built specifically for custom homebuilders/remodelers and have a lot of functionality. 

How much time do you dedicate to it?

Most of the time you talk to people overseas in customer service departments, the defective item sent back in takes weeks to get to the warehouse or it get's lost at the warehouse etc.

They provide a custom built Podio work space that I think should solve a lot of the problems you are having.

Where will I put my two big screen tv's and my custom furniture? 

I have always been a top producer in automotive and I really contribute that to never meeting a customer but a friend and sticking to the philosophy of treating every customer and situation as if I were dealing with my own Mother.

@Libby Baugher Setup the properties as class and customer, for duplex you can set up each unit as sub-class and sub-customer.