For anyone estimating Defence construction work. The contract already tells you who carries each risk, and most of it is in places people do not read. Site information. Defence provides it, but it does not form part of the contract and carries no guarantee as to accuracy or adequacy. You also warrant you did not rely on those things, and there is a bar on claims arising out of that information. Treat it as a starting point for your own investigations. Latent conditions. The definition is narrow. Ground conditions at the site only, excluding inclement weather, and only where they differ materially from what a prudent, competent and experienced contractor should have anticipated. Notice must be immediate and in writing, and extra costs are only recoverable from after the notice is given. Worth noting there is a separate optional special condition covering hazardous substances and asbestos, which is broader, but it only applies if it was included in your contract. Site access. If Defence fails to hand over the site on time at the start, the contract says that is not a breach. Your entitlement is extra costs and an extension of time. Delay damages are a separate thing, they apply only to a breach by the Commonwealth, and they are capped at a daily amount in the Contract Particulars. Worth noting that a later interruption to access is a different question and can be a breach. Security Alert System. A change in level can increase your price by your extra costs or decrease it by any savings. The baseline level is in the Contract Particulars. And the thread through the last three. Each is an entitlement subject to the notice rules in clause 12. Written notice within 21 days of the event, detailed claim within 21 days of that notice, updates every 28 days while it continues. Fail and the price is not adjusted and you are barred. Site information sits outside that, because the contract bars claims about it altogether. Two questions for the group. Which of these four has actually cost you money? And does anyone routinely check the delay damages cap in the Particulars before pricing?