Properties What We Do Our Process The Group Private Enquiry

Aegean Prestige

Ultra-Prestige
Real Estate & Development

Greece  ·  Mediterranean  ·  Global

A private platform dedicated exclusively to exceptional residential estates, significant development sites and branded residence acquisitions — for private buyers, investors and developers who require the highest level of access and discretion.

Private Enquiry What We Do

Our Philosophy

"We do not list properties. We present opportunities."

Aegean Prestige — John Kosmas, Founding Principle

I
Absolute Exclusivity

We operate at the apex of the market. Every property in our portfolio is exceptional — not by price alone, but by rarity, location, provenance or development potential. We carry a small number of mandates at any time.

II
Discretion as Standard

Many of our transactions are never publicly announced. We operate at the level where privacy is not a preference — it is a requirement. Our clients' identities and interests are protected at every stage.

III
Access, Not Volume

Our network has been built over 35 years across family offices, developers, landowners and private capital. The most significant opportunities never reach the open market. They move through relationships.

IV
Integrated Expertise

As part of Thalassa Private, we draw on deep specialist expertise across hospitality investment, development delivery, advisory and private capital — bringing far more than a real estate transaction to each mandate.

What We Do

Three Disciplines.
One Standard.

Aegean Prestige operates exclusively at the apex of the real estate market — prestige residences, significant development sites and branded residence acquisitions. Nothing else.

01

Ultra-Prestige Residences

Exceptional coastal estates, landmark villas and architecturally significant residences across Greece, the Mediterranean and select global markets. Properties of genuine rarity — many available only through private introduction.

  • Seafront and coastal estates
  • Landmark island villas
  • Architecturally significant residences
  • Off-market private mandates
  • Athens Riviera prestige
02

Development Sites

Significant development opportunities — hotel and resort sites, landowner partnerships, prime coastal land and mixed-use development positions across Greece and the Mediterranean. Sourced, structured and delivered through the broader Thalassa Private platform.

  • Hotel and resort development sites
  • Prime coastal and island land
  • Landowner joint venture structures
  • Mixed-use development positions
  • Off-plan and pre-permit opportunities
03

Branded Residences

Privileged access to the world's most coveted branded residence developments — curated for private buyers and investors who understand that the most desirable properties are never publicly available at the point of maximum opportunity.

  • Five-star branded residence collections
  • Pre-launch and off-plan access
  • Hotel-managed private ownership
  • Resort-integrated branded suites
  • Investment and lifestyle aligned

Development Sites — Featured Focus

From Land to
Destination

Aegean Prestige works in close partnership with Aegean Developments — the development delivery arm of Thalassa Private — to provide landowners, investors and developers with an integrated pathway from site acquisition through to full project delivery.

This is not simply real estate brokerage. It is a complete development advisory service for those with exceptional sites who require the right development partner, capital structure and delivery platform.

Discuss Your Site
◆
Site Origination

We source development-grade sites through our network — often before they reach the open market — and present them exclusively to aligned development partners.

◆
Landowner Partnerships

For landowners with exceptional sites, we structure joint venture and profit-share arrangements with Aegean Developments to unlock full development value.

◆
Capital Introduction

Through GHAP Global and the Thalassa Private investor network, we connect development opportunities with aligned private capital and institutional partners.

◆
Full Delivery Platform

Aegean Developments provides the complete development management capability — feasibility, permits, construction management and operational handover.

Our Portfolio

Our Portfolio is Not
Publicly Listed.

We work discreetly. Our current portfolio of prestige residences, development sites and branded residence opportunities is shared exclusively with qualified buyers, developers and investors on private introduction.

This is a deliberate choice. The most exceptional opportunities are never publicly advertised — and neither are ours. If you are the right person for a particular opportunity, you will know it when you see it. To see it, you need to reach out first.

Request Private Access Introduce Yourself

I

Prestige Residences

Exceptional coastal estates, landmark villas and architecturally significant residences. Greece, Mediterranean and select global markets.

II

Development Sites

Hotel and resort sites, prime coastal land and mixed-use development positions. Landowner partnerships available through Aegean Developments.

III

Branded Residences

Pre-launch and off-plan access to the world's most coveted branded residence developments — at the point of maximum opportunity, before public availability.

Our Process

Considered. Discreet.
Precisely Managed.

Every mandate we accept follows a structured process — designed to protect our clients' interests, maintain absolute confidentiality and deliver the right outcome without unnecessary exposure.

01
Private Introduction

An initial private conversation to understand objectives, timeline, capital position and preferences. No obligation. All discussions treated in strict confidence.

02
Curated Matching

We identify relevant on-market and off-market opportunities — drawing on the full Thalassa Private network and 35 years of relationships across Greece and international markets.

03
Due Diligence & Advisory

Detailed assessment of selected opportunities — market analysis, site review, legal due diligence coordination and investment structuring where required.

04
Negotiation & Structuring

We negotiate exclusively in our client's interest — managing price, terms, structure and timeline with commercial discipline and precision.

05
Completion & Beyond

Transaction management through to legal completion — and ongoing advisory where required, including development partnership and asset management referrals.

Leadership

John Kosmas — Founder

John Kosmas

Founder  ·  CPA  ·  Global Investment Dealmaker

John Kosmas founded Aegean Prestige to serve a specific need he encountered repeatedly across 35 years of international deal-making — private buyers, landowners and investors at the top of the market who required a different kind of real estate partner. Not a portal. Not an agency. A trusted advisor who understands both the asset and the transaction.

As a CPA and global investment dealmaker, John has led and advised on high-value property, hospitality and strategic investment transactions across Asia, Europe and the Middle East — working with family offices, institutional investors and private capital providers who value precision, discretion and relationships above all.

Aegean Prestige operates at the intersection of where John has spent his career — exceptional assets, private capital and the trust that comes from doing things properly.

CPA Property Investment Capital Markets Development Advisory Family Office Advisory 35+ Years Experience
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Private Enquiry

A Conversation
In Confidence

Whether you are a private buyer seeking an exceptional residence, a developer or landowner with a significant site, or an investor looking for off-market opportunities — we welcome a private, no-obligation conversation. All enquiries are treated with absolute discretion.

✉Emailenquire@aegeanone.com
☎Phone+30 6955 693 008
◉HeadquartersAthens, Greece
inLinkedInJohn Kosmas
⊕GroupAegean Private
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We respond within one business day. All enquiries treated with absolute discretion.