This guy appears to suggest that all settlement visa applicants would need such a report. In that sense it is misleading.
"The UKBA recently issued an information guide which stated that a property inspection report is required for all applications leading to/for the purposes of settlement. These include applications for:
· Spouses and civil partners;
· Fiancé(e)s and proposed civil partner;
· Unmarried and same-sex partners;
· Children;
· Parents, grandparents and other dependent relatives."
