Here are some ground grading info as laid down by the conference. We would be ok - see point b below...

1.1 Security of Tenure1.2 Ground Share 

• A:
  The club must either:
  • (a) own the freehold of the ground, or
  • (b) have a leasehold interest in the ground for a minimum of ten years, or
  • (c) possess an agreement for the use of the ground which is acceptable to The Football Association.

As for sharing.......lots of info. Perhaps Team Bath did not have a long term plan in place?

• A:
  • (a) Ground sharing is permitted, but not in order to gain promotion or to avoid relegation. A ground sharing agreement should ideally have been in place for at least one full season prior to the grading inspection. (Consideration will be given, by the Football Conference Board, if the home ground of any club becomes untenable due to fire, flood or any other valid cause.)
  • (b) The Football Conference Board must approve any existing ground share agreement.
  • (c) The Football Conference Board will not generally approve any ground sharing arrangement where the club plays its matches outside the conurbation, as defined by the Football Conference Board, from which the club takes its name or with which it is traditionally otherwise associated
  • (d) Where there is a ground share between two football clubs, priority of fixtures must be given to the club playing at the highest level within the National League System. Any proposed ground share agreement with a Football League club would be considered on its merits.
  • (e) Where a ground share is in place with another sport e.g. Athletics, Cricket, Rugby Union, Rugby League etc, the football club must have priority of fixtures and full use of all the facilities on match days.
  • (f) No application for a ground share agreement will be accepted during the first three years of a club being elected into membership of the Football Conference, unless the conditions of paragraph 1.2 i) apply
  • (g) Any ground share application by a member club that does not fall within the conditions of paragraph 2 i) must be for a minimum of ten years with no option to amend the terms during the first three years of a ground share approved by the Football Conference Board.
  • (h) No application will be accepted from a club applying for membership of the Football Conference who is in a ground share arrangement as a sub-tenant or second user or similar arrangements where the club is not the leaseholder, own the freehold, or license agreement holder or main tenant.
  • (i) Short term ground sharing agreements will only be accepted if a club is moving to a new ground or their existing ground is being re-built or refurbished or deemed unusable due to fire, flood or other causes. The club must provide the Football Conference Board with confirmation that any new work proposed has full planning permission, that construction contracts with start and finish dates have been awarded subject to ground sharing approval and that the fundingis in place.
  • For avoidance of doubt, the term short term refers to a period of not more than 12 months unless otherwise approved by the Football Conference Board.