Provide proper agreements and covenants running with the land and in favor of the citizens of Galax, requiring membership in such a nonprofit entity. Such agreements and covenants shall include, among other things, that any assessments, charges and costs of maintenance of the open space shall constitute a pro rata lien upon the individual townhouse lots, inferior in lien and dignity only to taxes and bona fide duly recorded first and second mortgages or deeds of trust on the townhouse lot. Covenants shall also prohibit the denuding, disturbing or defacing of said open space without prior approval of the Town Council after recommendation by the Planning Commission.