Aye aye, sir!

Is there a maximum height/depth to a village?

I’ve looked about but can only find official references about horizontal (distance of furthest bed or 32 blocks). I did see someone say 3 blocks below and 5 blocks above but I’m not sure if that applies since the new Minecraft update.

My village is so populated now (and enclosed in battlements within a 64 x 64 area) that I’m having to dig basement extensions in house for more room.