What is OS1?

• A. An Official Search that creates a priority period
• B. An environmental risk assessment
• C. A type of property survey
• D. A title insurance policy

Answer: (A)

OS1 is the Official Search with Priority. It’s a form used in conveyancing that goes to the Local Authority as part of the Local Land Charges search. By submitting this form, you create a priority period—usually around six weeks—during which the Local Authority’s search results are reserved for your transaction. This gives the buyer a protected window to obtain and rely on the LLC results while the purchase proceeds, helping to identify any charges or restrictions before settlement. It isn’t an environmental risk assessment, a property survey, or a title insurance policy.