There is no need to amend the AI, if the transfer is merely to another floor of the same building, inasmuch as locating the principal office of the corporation in this circumstance, will still be possible.
However, if the change of address is from one building to another building, even if within the same municipality or city, CRMD requires an amendment of the AI. This is so, because if the change of address resulting from the change of building is not properly reflected, a difficulty arises in locating the principal office as a necessary consequence of the transfer. Thus, it is not enough to reflect such change merely in the GIS, especially since not all corporations regularly comply with this reportorial requirement.
source: http://www.sec.gov.ph/investorinfo/opinions/ogc/cy%202012/12-12.pdf
