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Defence Estate Quality Management System (DEQMS) Davis Langdon Certification Services

Managing Facility Maintenance, Defects and Warranty Issues
Pre & Post Project Defect Liability Period (DLP)

The Instructions for Managing Facility Maintenance, Defects and Warranty Issues Pre & Post Project Defect Liability Period provide direction for establishing Defect Liability Period (DLP) maintenance arrangements, and managing warranty and latent defect issues for Capital Facilities Infrastructure (CFI) and Estate Works Program (EWP) projects.

DLP is the period which commences at works completion or a stage signified by issue of a completion certificate or equivalent by the contract administrator in accordance with the construction contract and continues for the period specified in the contract (generally 12 months). A further DLP often applies to work performed by the contractor in rectifying defects. The agent and/or contractor assigned to conduct DLP maintenance on the completed works is to be determined prior to issuing tenders for the construction works.

Where there is operational or economic benefit to have EMOS perform some or all DLP maintenance, the PM / PMCA must liaise with the Estate Maintenance Operations Services (EMOS) and establish an agreed outcome before the works are tendered. Further guidance on establishing DLP maintenance arrangements and engaging EMOS engagement is provided in the instruction.


Feedback should be sent to the DEPU group email address eigservicedelivery.esddepu@defence.gov.au

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Version Control
Last Updated: October 2020
Technical Authority: ESD
Subject Matter Expert: DEPU