One odd thing I've noticed though is the header (although I don't have one) shows a box (dotted line) at the top that is further to the left and right than the form below it.

When you say align left what do you want aligned left? If you want everything shifted left as far as possible remove all of the left padding from the elements in the form builder.

Thanks Eric. I checked every element in the form and the left padding was set to 0 or 4, other than on the Captcha (which was 28). I changed the Captcha padding to 0 and it moved to where I want the entire form to be, but every other element still appears as if there's a 28px padding.

It's not critical for the PC version, but when viewed on a phone, a bit of the form gets cut off on the right.

It's probably not the form causing the issue but a break point for the containing element. Try taking your form out of the <p></p> tags.

Thanks Eric. I have done that now, but no cigar.
This is the location of the form now:
http://www.corporatehousinglocators.com … tions.html

I'm going to try putting a new, test form in with just a few fields and see how it justifies.