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Power to acquire protected structure. 
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71.—(1) A planning authority may acquire, by agreement or compulsorily, any protected structure situated within its functional area if— 
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(a) it appears to the planning authority that it is necessary to do so for the protection of the structure, and 
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(b) in the case of a compulsory acquisition, the structure is not lawfully occupied as a dwelling house by any person other than a person employed as a caretaker. 
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(2) In this section and sections 72 to 77, a reference to a protected structure shall be construed to include a reference to any land which— 
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(a) forms part of the attendant ground of that structure, and 
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(b) is, in the planning authority's opinion, necessary to secure the protection of that structure, 
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whether or not the land lies within the curtilage of the structure or is specified as a feature in the record of protected structures. 
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