Landmark Advisory has compiled an unofficial list of average rents across Dubai as an alternative to the official rent index. The index will be published every two months and will act as a guide for tenants and landlords alongside the official index by the Real Estate Regulatory Agency (Rera). Data from the published index reflects a fall in rentals of up to 45%. 'Our index is mostly to act as a guide for tenants looking to rent in different areas of Dubai,’ said Charles Neil, CEO of Landmark Advisory.