Twenty one

Company Profile

TWENTY ONE was founded in 2009 when two executives with valuable experience in the Real Estate and Construction field, decided to join forces.

Georgios C. Papageorgiou, Economist with past participation in high scale construction projects in Greece and South-east Europe.

Konstantinos Panagiotidis, Mecahnical Engineer, experienced in Real Estate as a Director of Development in a multinational group of companies.

Activity / Services

The company provides complete services covering all aspects of construction and real estate management.

Organization and Management of Projects

  • Project Design
  • Tendering
  • Supervision of subcontractors / workforce
  • Procurement / material management
  • Monitoring schedules
  • Audit
  • Crisis management
  • Risk management


  • Construction of private and business areas
  • Special constructions
  • Renovations


  • Architectural designs
  • Static designs
  • Electrical-mechanical studies
  • Interior space studies
  • Exterior space studies
  • Electrical installations

Real Estate Management

  • Management of Shopping Centers
  • Real Estate Management
  • Maintenance of stores / business areas
  • Market study
  • Expansion strategy


  • Certificates of energy permissibility
  • Energy solutions with photo voltaic
  • Environment and energy efficient design of buildings


  • Furniture construction
  • Supply of infrastructure for offices / stores.


Fully catering current requirements and needs of the market, TWENTY ONE capitalizes the specialist market insight of its executives with key aim to achieve the highest performance in each investment.

Undertaking the design and the complete supervision of each project, we offer to you complete services making your life easier by solving any problem before it reaches you. By utilizing reliable partners but also by researching daily for new business partnerships, we ensure the most affordable and the same time quality ensuring solutions.


Many businesses and individuals have trusted TWENTY ONE. Recent collaborations include:

    • MetLife Alico –
    • Hennes & Mauritz (H&M) –
    • Shopping center Avenue –
    • Shopping center River West –
    • Protech SA –
    • 3MSSL –
    • Mark Aalen opticians –
    • Sanyo Hellas Holdings –
    • Pharmacon –
    • Swatch –
    • Farmers Republic –
    • Triumph –


Georgios G. Papageorgiou

Georgios Papageorgiou initiated his carrer in the Real Estate field in 2005 by participating in an investment partnership in order to develop a business park and a residential complex in the area of Pipera in Bucharest.

Then, he actively participated in the expansion of the new diagnostic unit and the construction of a clinic of the diagnostic center Iatropolis MRI. From 2006 until 2009 he was actively involved in the supervision of the construction of the shopping center Avenue in Maroussi. At the same time, an office building of 1800 sq.m was developed in Kifissias Avenue.

He is also involved in the construction of residential complexes in Ekali and Porto Cheli. He holds a BSC Business Economics from Queen Mary University London and a MSc in Real Estate Investment from Cass Business School. He is a graduate of Athens College.

Konstantinos G. Panagiotidis

Konstantinos Panagiotidis has been active in the field of Real Estate since 2005 having acquired valuable experience in Greek and European Real Estate Sales.

He was Director of Network Development in the multinational group Ιnditex in the Greek market (Zara Hellas), from 2006 until 2010. He undertook the strategic design and the realization of developing a network for new group chains throughout Greece.

Since September 2012 he participates as a project manager in a partnership that has undertaken the construction of a network of stores for the company ZARA in Australia and New Zealand.

He has also worked in a project of the company Burtol Associates, which involved the construction of residential house in the area golf of Glyfada in a property of 20,000 sq.m. The project consisted of 10 maisonettes and 7 apartment buildings. He holds a BEng (Hons) in Mechanical Engineering from City University London and a MSc in Real Estate Investment from Cass Business School. He is a graduate of Athens College.