15. The guarantee of a plan applies to a building that has no beneficiary at the end of the work, provided that acceptance of the building occurs within 24 months after the end of the work.
The guarantee pertaining to faulty design, construction or production of the work, or the unfavourable nature of the ground within the meaning of article 2118 of the Civil Code is nevertheless limited to the remaining term of the guarantee.
The guarantee of completion after acceptance of the building does not apply, however, if the beneficiary and the contractor agree that the building is sold in the state of completion it has attained at the date of the contract.