Now, in addition to making your broadcast area a comfortable place for you to do your show daily (or whenever), you need a place to put your computer(s) and monitor(s).
I noted in an earlier post, I had been using at least five types of computers and then i was able to slim that down to a laptop with a dual monitor setup, a microphone, headset, etc. Your personal preferences come into play here. Will you use just a table? If so, it should be about 5 feet long and about 3 feet deep, to fit a normal setup, like I mentioned, probably best with two monitors. I preferred to elevate them, so you may want to leave room for a shelf of some sort. That way you can put the monitors up, and still save a bit of space with the pc/laptop in front of that setup.
I started my first show in my bedroom, using just my wife's recondition desk that she used to store her cosmetics, make-up mirror, etc. I had to rearrange things a bit, but it worked.
Now, like most folks, my house has most rooms carpeted. And the chair in front of the broadcast area, can be a bit dicey when trying to stay mobile, even when in the middle of a broadcast, one, tends to move about, and that chair can get stuck. The other half has a shop in our basement where she stands a lot during the day.
She has mats that are easier to stand on all days. I recommend a small plastic mat that goes under the chair you are using.