it is generally better to move beans to a new location each year. Diseases and pests build up in the soil and can reduce production. With that said, I've grown beans in the same location two years in a row with no more problems than usual.

Not 100% sure about this, but I would think that legumes would be the things to worry about least when it comes to rotation--because they help the soil so much as nitrogen fixers. I still would try to rotate them regularly but I think two consecutive years would be fine.

That should be OK and I have done it without problems but now that I have more trellis installed I try to alternate my available trellis space between cucumbers and pole beans or peas.

This year I planted in the same area as last year. They are producing as well as, if not better than last year. I plan to move my bean patch to another area next year.

Every year I ponder this question. Putting up and taking down poles and trellis for several hundred feet of beans is a chore I'd love to eliminate. Every year I wonder if I couldn't make permanent beds and leave the trellis up year round? I could rotate with cukes or something. The only problem is, I don't need 300' of cukes.

Small home gardeners usually don't have to worry about crop rotation. It's certainly a good practice, though,so if you have the space for it, do it. If you don't, it may be harder to do.

Nutrients can be regained by using fertilizers or compost, so the other problem for growing in the same area is pests and disease.

I don't have the room for crop rotation and I've grown beans in the same area for many years. Beans is probably the plant I'd be least concerned about rotating. One of the least nutrient demanding plants to grow imo. I never do pole beans tho, they don't freeze well.

What about with a raised bed? Does moving peas/beans to a different section make any difference in that kind of controlled environment?

"I never do pole beans tho, they don't freeze well."

It sounds like you had a bad experience... but it might have just been an unfortunate choice of variety. There is a great deal of diversity in beans, and there are beans that freeze well - and freeze poorly - in both bush and pole habits. I have found the 'filet' beans (both bush and pole) to be some of the best for freezing. "Emerite" and "Fortex" are pole filet beans, and "Emerite" in particular is outstanding both canned and frozen.

But back to the topic... Rotation is a good policy with almost all vegetables, since it reduces insect & disease pressure, and lessens the chance of a mineral deficiency. That being said, beans are more forgiving than most vegetables, if grown repeatedly in the same location. You might get quite a few good years that way; but if you have a serious disease issue, then it would be best to plant elsewhere for a year or two, provided that there is space to do so.