"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.
The link to the UKBA website for supporting documents required for all settlement applicants can be found by clicking here.
A property inspection report is THE ONLY document in the UKBA supporting documents information guide which proves to the Entry Clearance Officer that you have Obtain[ed] an independent assessment of the number of rooms and occupants of the proposed accommodation. A report from a suitably qualified body certifying that a personal inspection has been carried out and giving details of accommodation inspected is usually acceptable for this purpose. Above all, the Entry Clearance officer must be satisfied that the accommodation will not become overcrowded within the definition of the Housing Act 1985 or that it will not contravene public health regulations."
http://www.propertyinspectionreport.co.uk/