You seem to have gotten some pretty good advice. From my experience, all of it is true. I worked at home on special projects for many months and I was far more productive at home than in the office. However, I am also the type of person to be working on a project at 10pm (or later) at night to finish it up or when the 'spirit moves me' so to speak. I had worked for the govt for 5 years before they sent me home to get some stuff out fast and be able to 'focus' on the projects. I knocked it out in months and the results speak for themselves.

However, it has also been my experience that if a supervisor does not like having developers off-campus then it will not work no matter what. Some supervisors feel they do not have 'control' over those off-site employees (usually insecure supervisors feel this way, because in reality they always have 'control' and can exert it whenever they choose). Other times the supervisor may feel pressured by on-site jealous employees that are not allowed to work off-site to accomplish tasks who may make snide comments on everything that COULD be negative about the situation whether it is true or not. Many scale employees feel that if they cannot work out of their home, then no-one should be able to and will actually try to destroy the situation in whatever way they can without any stats. Working out of the home has its benefits, but it also has it drawbacks for the employee. I never worked so many hours as I did when working out of my home. I would get tied up in a specific routine or function and keep going til I knocked it out sometimes in the middle of the night. There is no reason to get up and leave when the day is over if you are already at home!

The knowledge, experience, and reliability of the employee make it work. That means the supervisor has to know or have reasonable trust (from references or experience) in the employee before it should be tackled by either. It is the supervisor's responsibility to know the project well-enough to determine if the off-site employee is being productive or not and whether it is cost-effective for the employee to be offsite. It is the employee's responsibility to keep the supervisor informed throughout the process and present clear results on a recurring basis throughout the process. Good communication is key.