Due diligence of construction documents is generally only relevant either for properties built within 12 years of the date of purchase or, for older properties, where construction works have been carried out during the previous 12-year period, although this period should be treated as a practical minimum only, as extended limitation periods for certain building safety-related claims may justify a wider review for property which is for, or includes, residential use. See Practice Note: The construction due diligence process. This Checklist sets out a list of the key points which need to be considered following receipt of the construction documents in relation to the property. The documents should be initially reviewed and these key issues considered before raising any pre-contract enquiries with the seller. For an example of a list of pre-contract enquiries, see: Construction pre-contract enquiries—checklist. Documents • (1) Check that a full suite of construction documents in relation to the construction of the property and/or in respect of works carried out in the past 12 years, or such longer period as appropriate,