I. Except where otherwise provided, a permanent, enclosed commercial building located within this state, easily accessible and open to the public at all reasonable times, and at which the business of a dealer may be lawfully carried on in accordance with the terms of all applicable building codes, zoning, and other land-use regulatory ordinances.II. As it applies to a wholesale dealer as described in RSA 261:140-a, a building or structure that complies with RSA 259:29-a or a suitable building or structure which is occupied as a business office or a residence, owned or leased by the applicant and designated as an office or place where his official business is conducted, where legal mail is received and where records pertaining to the business are maintained as required by the commissioner.III. As it applies to a retail vehicle dealer:(a) A business location where the retail vehicle dealer conducts sales during normal business hours; and(b) Such business location is a permanent physical structure that has at least 750 square feet or is primarily dedicated to the business of selling vehicles; and(c) The business location clearly and conspicuously displays the business name of the dealer in letters no less than 10 inches in height, unless prohibited by local zoning; such business signage shall be clearly visible from a traveling vehicle on the adjacent public way, unless an obstruction exists which cannot be remedied.