Size Right size cage for 3 boars?

Just so you know, adding a third boar to an established pair is a crap shoot. You may wind up with your original pair unbonded, or you could even get three singles, none of whom will live with the other. But if you're going to do it, the younger they all are the better, IMO.

I wouldn't do three boars in a 2x4 cage.

Why is the loft so much larger than the cage?

Well the 2x4 is technically the basement and the 2x5 would be the main area, but if getting 1 more boar is risky then I guess I will just stay with 2.

Two's company, three's a crowd. One will always be a 3rd wheel.

I don't think a huge loft will make much of a difference; it's the overall floor space of the main level that counts. If you somehow manage to make it work between 3 boars, you'd probably need at least a 2x7 cage.

I have three boars. They were all bonded when I bought them from their previous owner tho. Thankfully even though I have a way too small cage they don't fight a whole lot. I guess it just depends on the guinea pigs. If I had 40 bucks to build them I new cage they would have a 3x6 at least!

My 3 boars are currently in a 2 X 5 cage and are happy but once I get more room I would like to add a little 2x2 section for their kitchen so the 2x5 is dedicated play area. I also use fleece exclusively and I was able to make a liner with 3 pads in one afternoon.

That said I have to agree with the other posters that adding another pig can disrupt you established pair so if you find that having them all together you can always section of part of a larger cage so they can still interact without getting into scuffles.

Thank you everyone! I'm still considering a 3rd pig but my cage plans have changed. I Think I will put my current 2x4 next to a 2x5 so they have a 2x9 in total. That way, if they do fight I can section it into 3 2x3's or just a 2x4 and a 2x5 if my current pair still get along, which I'm pretty sure they will.