Founded in 1999, D.N.KAT offers a full range of design-build residential and commercial construction services in every major industry sector. Over the years, our core value has always been to satisfy our customers most demanding needs and requirements.
Our team of fully-licensed professionals under the guidance of Nikolaos Papakonstantinou has in-depth expertise in all aspects of construction, management, development, architecture and engineering. We apply cutting-edge construction methods and technologies to ensure that our clients’ projects, large or small, are built to meet and exceed their expectations.
But, most of all, D.N.KAT provides timely, personalized service, open communication and responsiveness to customer needs, top-quality workmanship and affordability.
We are committed to
- Project implementation according to the agreed budget
- Use of construction and architectural solutions according to the budget
- Continuous coordination and day to day supervision of the project
- Keeping track of the timetable
- Economic, inventive and fast construction
- Working with new and innovative materials
- Keeping updated with all international trends in the field of construction and technology












Relying on our capable and specialized executives but also on our many years of multifaceted know-how, we successfully meet the requirements of the modern market, recognizing the (new) current reality.
We provide solutions wherever needed and complete the projects on schedule with excellent quality work & materials.
We have built strong partnerships and have been maintenance partners of OTE, National Bank of Greece, t Bank of Attica, and the QUEST group (Infoquest, Briq, Cardlink etc.) for many years.
DNKATServices

Supervision and Project Management

Design of static and electrical engineering specification plans and issuance of building permits

Construction and reconstruction of residential and commercial spaces

Electromechanical projects of low and medium voltage

Design, licensing and construction of photovoltaic projects

Maintenance of buildings and electrical engineering installations
Among our clients are the following companies:
AKTOR SA & AKTOR FM
NATIONAL BANK OF GREECE
BANK OF ATTICA
QUEST GROUP
BITROU GROUP
OTE SA / ΟΤΕ ESTATE
GERMANOS SA
REDEX
J & P
COFFEE ISLAND
EVEREST
OPAP
BRIQ Properties
RECKITT BENKISER SA
KROP O.E.
S. MENTEKIDIS SA
F & K LEMONIS SA
HAITOGLOU SA
BODY TRAINER STUDIOS
ATHINAIKI DOMIKI SA
ARCON CONSTRUCTIONS ΑΤΕ
DOKIS SA
PATSEAS SA
I. ZERVOU BUSINESS GROUP
EYAGGELOS STASINOPOYLOS
PETZETAKI FAMILY
A&G PAPPER
PRINCE OLIVER
TYPE CENTER SA
TEXTONIC PHILANTHROPIC FOUNDATION
ANATOLITIKO EDESMA
LEKTOR ΑΤΕ
We have collaborated with several architectural offices such as:
Theofanis Bobotis
Paris Liakos
Evangelos Stylianidis
Katerina Mavromichali
Konstantinos Daflos