# Which Dubai property source should your AI answer use? > Source: > Published: 2026-10-26 05:00:00+00:00 A fluent AI answer can still use the wrong kind of property evidence. Before asking a model to summarize a Dubai property source, define the question: are you describing a sales-price series, comparing a rental benchmark, or asking about one particular property? Those outputs are different. Putting them into the same dashboard does not make their meanings interchangeable. Dubai Land Department's [Residential Sales Price Index page](https://dubailand.gov.ae/en/open-data/residential-properties-price-index-rppi/) separates property segments and reporting periods. Its historical reference periods should stay historical: the date a website was updated is not necessarily the period the observations describe. The linked [2020 methodology](https://dubailand.gov.ae/media/qnslugbi/the-dubai-house-price-index-methodology.pdf) explains why the mix of properties sold matters and describes a hedonic approach using recorded characteristics. This is a description of that published methodology, not a claim that every present-day index uses an unchanged model. The same index page includes restrictions on commercial use, including pricing, investment decisions and performance measurement. I am linking to the explanation and notice here, not reproducing its series or deriving a property's price from it. Public visibility alone does not establish permission to redistribute data or build a commercial feature around it. The [Smart Rental Index FAQ](https://dubailand.gov.ae/media/thwlcxn4/smart_rental_index_en.pdf) describes building-related characteristics and registered rental contracts among its inputs, and specifies coverage limits, including an exclusion for DIFC. A rental benchmark does not, by itself, supply an acquisition price, operating costs, financing or realized occupancy for a particular property. My conclusion is limited: that source alone cannot establish the property's investment return. This is not a determination of anyone's permitted rent increase. DLD also has a separate [Property Valuation service](https://dubailand.gov.ae/en/eservices/property-valuation), with an application, supporting documents and review before a valuation certificate is issued. A model-generated paragraph linking to the service is not such a certificate. This is my proposed record format, not an official DLD form: ``` { "question": "What claim am I trying to support?", "source_and_purpose": "Which document or service addresses it?", "observation_period": null, "coverage_and_exclusions": null, "measure_and_units": null, "method_and_use_limits": null, "access_date": "2026-10-17", "unresolved": [] } ``` The nulls are intentional. Missing fields should remain missing until evidence fills them. An instruction to produce a confident summary should not turn an unknown period into a current observation or a market segment into an inspected apartment. For a product, the useful first output may be a source-selection note with the gaps visible. That gives the next reviewer something to inspect before a number becomes a recommendation. The [full source-selection guide](https://a-samadi.com/writing/which-dubai-property-source.html) includes the distinctions, limits and proposed evidence card. Source review: 17 October 2026. This educational article is not a current market report, property valuation, rent-dispute decision or investment recommendation. AI assisted drafting and source comparison. No personal transaction, customer outcome or tested company system is claimed.