EBU Single Rulebook Q&A 27 January 2016 2016_2599 Treatment of retail exposures secured by property under IRB

How should institutions treat a retail exposure for an SME that has a minor property collateral (and thus it is partly secured by immovable property) but the purpose of this loan is not property/mortgage finance? Are the correlation coefficient prescribed in Article 154(3) and the minimum LGD requirement in Article 164(4) applicable for the full exposure?