What the Index measures
Gross yield uses price and annual rent. Net yield goes further: service charges, management, vacancy and acquisition costs are deducted or added to the cost basis. The result is a planning number, not a projected return.
Release state
Q3 2026 data verification is in progress. The first release requires at least 20 buildings in each of two communities, 12 months of transaction and rent history, and a visible source tier on every row.
Why no headline ranking yet
The transaction and Ejari layers are accessible. Building-level service charges are not available to a brokerage by API. Amberstone is compiling the missing layer building by building and will not fill coverage gaps with estimates.
Every number carries provenance
Mollak-verified
Approved building budget obtained and matched to the canonical building record.
HighestOA-confirmed
Confirmed directly by the building’s owners-association management company.
HighOwner-supplied
Provided by an owner and checked for year, area basis and inclusions.
IndicativeInsufficient data
No number is published. The gap remains visible rather than estimated.
NoneUse your own assumptions now
Until the dataset is released, the calculator lets you model a property with building-specific inputs you already hold.
Open calculator ↗Begin with the full acquisition basis
Purchase price is not total cash invested. The model keeps transfer, registration, agency, finance and other transaction-specific costs visible, using current confirmed figures for the actual purchase rather than a permanent generic percentage.
Use achieved rent, adjusted honestly
Current asking rent is a signal, not settled income. The Index prioritises registered tenancy evidence, then adjusts for the exact building, layout, condition, furnishing, floor, view and realistic time between tenants.
Make annual drag impossible to hide
Approved service charges, management, cooling where relevant, insurance, maintenance and vacancy belong beside rent. Each omitted line makes the property appear stronger without making ownership any better.
Liquidity is an ownership metric
A net-income scenario is incomplete without the next buyer. Registered sale depth, competing listings, future handovers, unit type and price band help explain whether capital may be released on a practical timetable.
Every scenario carries a sensitivity range
Rent, vacancy and operating costs are not fixed forever. Amberstone shows how the result changes when income softens, vacancy extends or annual charges rise, so a decision is not balanced on one optimistic input.
What the Index will never promise
It will not predict a guaranteed return, disguise missing data or rank communities from incomplete averages. Its job is narrower and more useful: make the ownership equation comparable, traceable and difficult to oversell.
Open methodology
See every input.
The source hierarchy, formula, matching method and known limitations are part of the product—not a footnote.
Read the methodology ↗