I've done a couple of forum searches and referred to the official sites like this one:
http://www.bfm.admin.ch/content/bfm/...willigung.html

However, I have seen my question answered both ways, and I am wondering if anyone could clue me in to what may be best in my situation, or a better resource (such as an office to call or something).

I am non-Eu (USA) and planning to move to Basel for an indefinite period of time. I will likely not have a work contract upon arrival. See my last post:
Online job-hunting

Am I expected to arrive in Switzerland permit in-hand? I will not have an apartment set up by then, as I would like to secure a job first.

I have read of people applying for their permits upon arrival, but I feel this is risky.

Does anyone have insight on this subject?

I'm not exactly sure what your question is.

My story: I moved here for work. My company had to apply with the immigration office in Switzerland for permission for me to come. Then I had to go to the nearest Swiss consulate to apply for the visa (as far as I know, I believe you need to do this in your home country.....but I'm not 100% sure). When I arrived in Switzerland, then I had to go the capital of my canton, and a few weeks later, my work permit arrived.

That being said, I have an unlimited work contract, and was only granted an L permit. So I wouldn't bet on getting a B permit, at least not right away.

Like I said, I'm not sure exactly what the question was, but I hope that helps to provide some insight.

Good luck!

If you are non-EU and without a valid permit you won't be allowed to stay beyond 90 days. You won't be allowed to become a resident or look for work or take over an apartment.

The only way to do all this is to secure a job (and therefore a permit) before you come.

It's tough, I know, but the only way if you are non-EU, short of marrying one of the locals.

I'm a bit confused on what basis you are coming to Basel for and "indefinite period of time"?

As an American citizen you are allowed to stay for 90 days as a tourist. That means you can't work. If you want to work you will have to have a permit in hand before you arrive. Your employer will have to apply for this for you. So, you'd have to find a job before you arrive.

You can try an au pair organization if that's the road you want to go.