Posted by TeddyB_SC on August 07, 2007 at 22:17:29:
Not to me. I have a single wide on top of a septic tank and another that has a large deck on top of it.
A little more work to get the lid off, but no big deal.
Septic tank under MH violates current codes, but that’s how it was when I bought it and I haven’t had any problems so far.
I’m not sure where you are from so I’m hoping that this is not some code requirement for your area.