No signs, advertisements, billboards, solicitation, or advertising structure or materials of any kind shall be displayed or placed upon any lot without the prior written approval of the ARB; provided, however, street numbers and name signs on lots without the prior written approval. No signs advertising a dwelling unit for sale or lease shall be placed upon any lot or in the windows of any dwelling unit. No declarant or the association may enter upon any lot and remove and destroy any sign which violates this section. This section shall not apply to the declarant or to any residential builder doing business in the property provided that any such builder first obtains declarant's written approval of any such structure or materials prior to installing same, such approval to the granted or denied by the declarant in declarants sole discretion.