The phrase first phase is easy to miss when a project page shows the full vision. For Sei Saadiyat it changes the scope of what a buyer is looking at, and therefore what a seller can fairly claim about an offered unit.
The rendering shows a proposed setting, not a verified construction status.
Two counts with different meanings
Aldar's September launch says the first phase contains 265 homes in two buildings. Its project page describes 778 homes across six residential buildings. The first number defines a release. The second describes the planned complete scheme. Neither is a live count of units available for purchase today.
The same distinction applies to facilities. A project wide amenity list does not, by itself, tell a first phase buyer when each space will open. Ask for the current phase schedule and what access is included with the named home.
How to use that distinction
A buyer should locate the exact building and floor before relying on a masterplan image. Check the matched floor plan, orientation, surroundings and whether nearby buildings are planned for later phases. A seller or broker should identify the unit as a first phase home only when the developer's records support it, and should never infer a current availability count from the original launch announcement.
Aldar's current page says handover commences from Q4 2030. It does not guarantee the completion quarter for every home. The practical purpose of this article is to keep the release boundary visible while evaluating a specific home, not to predict its price or future return. The Sei project guide covers the full development.