Bennett OghifoMembers of the Building Collapse Prevention Guild Iru – Victoria Island Cell have expressed professional concerns over the imperfect sub-soil investigations in the coastal region of Lagos State. Adefemi Afolabi (an Architect); the General Secretary, BCPG Iru – Victoria Island Cell, QS Taiwo Ayanboade, (a Quantity Surveyor); and the Public Relations Officer, BCPG Iru – Victoria Island Cell, Engr. Lack of effective regulatory monitoring of geotechnical practice in Lagos State portends future incidents of building collapse in Iru – Victoria Island LCDA. “The essence of conducting soil tests in Lagos State is merely to comply with the regulation. “For a result oriented approach, field work monitoring with enforcement teams is inevitable in the aspirations for the satisfactory sub-soil investigations.