Introduction – Origin and Development of the Concept of ADR – Arbitration Institutions – The Nigerian Institute of Chartered Arbitrators (NICArb) – The International Centre for Arbitration and ADR (ICAA) – The Nigerian Society of Construction Industry Arbitrators (SCIArb) – The Multi-Door Courthouse – Negotiation and Conciliation Management Group (NCMG) – The Society of Construction Law Nigeria (SCLN) – ADR Agreements Mediation Settlement Agreement – Conciliation Settlement Agreement – Arbitral Awards – Application of ADR Mechanisms – Limitations on the Use of ADR – Conclusion – References.