In land ownership records, OS1 and OS2 refer to which concepts?

• A. OS1 relates to the whole title and OS2 is used for part of land
• B. OS1 is a mortgage reference; OS2 is a leasehold
• C. OS1 is a title plan; OS2 is a mortgage deed
• D. OS1 is an abstract of title; OS2 is a transfer deed

Answer: (A)

OS1 and OS2 are plan references used in land ownership records to indicate the scope of the land being described. The main idea is about whether the plan relates to the entire title or only a portion of it.

OS1 is used for the whole title, showing the boundaries of the entire registered property. OS2 is used when the matter concerns only a part of the land, with a plan that delineates the specific parcel within the broader title. These are not mortgage references, leases, abstracts, or transfer deeds; they’re about which plan accompanies the title and what area it describes.

So, the correct understanding is that OS1 relates to the whole title, while OS2 is used for a part of land.