Atitlan Desarrollos Inmobiliarios (ATDI) and Caledonian, a leading developer in the high-end residential segment and unique assets, have formalized an alliance to create an ambitious real estate division, whose first project is the complex The St. Regis Residences – Casares – Costa del Sol.

Located in Finca Cortesin — recognized as one of the 50 best hotels in the world — the project is being developed in collaboration with global hotel leader Marriott, standing out both for the uniqueness of the location and the solidity of the partners involved.

This agreement marks ATDI’s first venture into the ‘branded residences’ segment, a category increasingly widespread in Spain’s real estate market. For The St. Regis project, developer Caledonian already had the participation of U.S.-based real estate fund Harbert Management Corporation (HMC).

According to Agustín Pérez, CEO of ATDI, “We are delighted to enter a sector with great growth potential in Spain alongside a developer with proven experience and one of the most internationally recognized brands.”

For Enrique López Sastre, Sales & Marketing Director of Caledonian, “This alliance with ATDI not only reinforces our commitment to excellence, but also marks the beginning of a highly ambitious long-term collaboration. The St. Regis Residences is the first of many projects we aspire to develop together, with the goal of positioning a new product category in the market.”

A UNIQUE PROJECT

St. Regis Residences – Casares – Costa del Sol consists of 46 spacious units with open-plan layouts, where a typical living room measures 90 m². It also includes a 1,200 m² building with amenities such as a bar, lounges, library, complete spa with indoor pool, gym, cinema, and more.

One of the project’s key distinctions will be the inclusion of the iconic The Signature Butler Service from St. Regis, which transforms each residence into a luxury hotel experience. This highly personalized service for owners can meet any need in the home at any time (24/7) with exceptional quality.

For the development of these branded residences, Caledonian has engaged world-renowned professionals such as architects Marcio Kogan and Suzana Glogowski (Studio MK27), interior designer Lázaro Rosa-Violán, and landscape architect Isabel Duprat.

The project, which began construction in 2025, comprises nine buildings and will be delivered in two phases. The first, including four residential buildings and the common areas building, is scheduled for the first quarter of 2028; the second, for the second quarter of 2029. The total investment for both phases will exceed €120 million.

The St. Regis Residences – Casares – Costa del Sol is one of Marriott’s flagship projects, a cornerstone for its growing branded residences division and its strategy to strengthen its presence in Europe, where it already has properties in Mallorca, Rome, Florence, and Belgrade.

The strong interest in the project is reflected in its sales performance, with 25% of the 46 residences sold since the Sales Gallery opened on April 1.

The agreement between ATDI and Caledonian lays the groundwork for a strategic collaboration aimed at redefining the concept of prime residential living in Spain, combining innovation, design, and operational excellence.