The paper sought to evaluate the practice of collaboration for the provision of valuation service in Nigeria with a view to strengthening the profession for global practice. Questionnaires were distributed randomly on 270 practising estate surveying firms in Lagos state. Data were analysed with the aid of descriptive statistics of frequency distribution, mean and relative importance index. The findings are that a large proportion of the firms are attracted together by the need to meet the client’s requirements for transparency of service, followed by the need for them to build their requisite technical ability for efficient service delivery. Further findings are that works are apportioned on the basis of professed technical ability while fee is shared on the basis of the involvement of the firms. The problems of unequal yoking and disagreement of fee sharing is no uncommon. The study advised that the adoption and utilisation of standards will ensure uniformity of service provision.