Wandeegroup CEO

Mario Kleff ™


Wandeegroup Asia Co Ltd

Wandee Real Estate & Services Co Ltd

Wandeegroup (Thailand) Co Ltd


21st November 1967

Boppard Rhineland-Palatinate, Germany

Birth name

Mario Werner Kleff

Artist and brand name

Mario Kleff ™ – trademark pending

Thai name

Thiti Teerachin (ธิติ ธีรชินทร์)


Nittaya Wongsin


Jiang Li Wongsin

Banù Çaĝiran

Lale Çaĝiran

Tara Arabella de Buitléir

Miró Dollinger †


Waraporn Na-Lampang


Leopard Fasai, female

Leopard Typhoon, male

Female leopad Fasai
Leopardess Fasai
Male leopard Typhoon
Leopard Typhoon


"Mario Kleff - I experience the most precious connection life has to offer. The relationship with the leopards Fasai and Typhoon is based on unspeakable trust and love. But it also brings great responsibility and limitations."

CEO Mario Kleff operate the Wandeegroup in Pattaya


A story about a man who became the most awarded architect in Pattaya in 2010.

"The new condominium project on Pratumnak Hill, Wong Amat or Jomtien Beach... designed by Mario Kleff," this is to read on almost advertisements or in Pattaya's real estate magazines, over the last years. But the exemplary architect designer got many other project on the payroll, outside this town.

He is in charge of numerous architectural designs across Thailand, from Phuket over Bangkok to Chiang Mai and abroad, and today can grace to be responsible on projects worth billions of baht. It all started in 2002 when Kleff built his first house in Bangkok...


Within the years 2004 to 2015, Mario Kleff together with Nittaya Wongsin have delivered an exceptional mix of building designs and continuously business opportunity for developer and estates here in Pattaya. With his ideas, Mario pushed the boundaries not only on the architectural field, but came up with many innovative structural engineering solutions that requires support from the highest Authority level and advanced Thai engineers from Bangkok. Mario Kleff was recommended a PhD in architecture by Pichet Uthaiwattananota, Head of the Pattaya Construction Department.

At the Wandeegroup head office Mario's creative visions basically takes place and the designer himself ordered companies from the UK and the USA to build for him latest supercomputers which are not available on the current Thailand market. "I decided to invest a few hundred thousand dollars more to bring our client a much better result on presenting their new developments perfectly to clients", he said.

The task of architects and 3-D designers at this time is to present these developments in the most attractive way but also as fast as possible. In March 2009, Mario and his junior architect Saksit Vongaram have pushed a new record of designing over ten condominium buildings within just one month. Now, at this point a few words from the developers:

...Architect Mario Kleff immediately gave us the confidence that not only could he complement the existing development with a stunning design concept for the Condominium Hotel but he could also handle all of the dealings and requirements of the Thailand planning authorities to obtain all of the necessary licences and permits. Two days later at our second with Mario at Wandeegroup he not only produced a stunning design but also came up with the entire concept of naming the new project “The Wave” at Talay Sawan. On our third meeting with Mario at the end of week one he produced the full set of construction blueprints and has already submitted all documents to the relevant authorities.

This is certainly a first in our 25 years of development experience. The professionalism and attention to detail of the architect Mario Kleff is unparalleled in Thailand and certainly makes life for the developer so much easier and provides the end customer with a modern unique quality home...’

John Sheehan, Managing Director of Bang Saray Development Co., Ltd.

Nittaya's husband Mario believes that the best time to plan for these larger, more imaginative projects is right now. “The expected change in regulations affecting property development will mean more overseas buyers will be attracted to Pattaya,” he said.  “Developers need to understand that unique circumstances apply to Pattaya. The place is just out of infancy and is heading towards being a mature city. The job of the developer therefore is to provide this new city with what it really needs – properties tailored to the various social groupings that will inevitably evolve here.”


A quick glance at the Wandeegroup order book and you might be forgiven for thinking there is no economic crisis. With numerous projects under way and many more contracts signed in the first quarter of 2009, the Wandeegroup has been confirmed as the architects’ practice with the most planning designs submitted to the Pattaya construction department.


‘The Wandeegroup is the leading architect firm which has submitted and received the highest amount of construction permits in 2007-2009. Their exemplary knowledge on architect law and engineering requires support and approval by advanced engineers such as Thai Professor Somsak Khumplew, who is a master professional in steel and concrete construction."

Pattaya City Planning and Construction Department

‘Many estates in Pattaya know that Mario Kleff, CEO of the Wandeegroup, is the architect on Heights Holdings projects. Mario Kleff designed the Wong Amat Tower with over 360 units, followed by the Club Royal condominium with over 400 units on Wong Amat Beach, the Laguna Heights on Long Beach, the Park Royal Series with Park Royal 1, Park Royal 2 and Park Royal 3 on Pratamnak Hill, while he was also working on other big projects here in town like TAG Group's Skypark and Parkside Shopping and started up his own property development The Touch. Mario Kleff designed Laguna Bay 1 & 2 and laid out plans for the future developments of Heights Holdings. Watch a Laguna Bay commercial on YouTube. What brings him up to being a top architect is not the fact he has received exemplary honoree, but the fact he can deliver any project fast and unique on demand.’

Haim Bar-David, CEO Heights Holdings 

View award winning architecture from Mario Kleff and read about his early life.

Quotation Mark

Developing high quality real estate is of great importance to reflect your rank within."

Mario Kleff, CEO

Logo Wandeegroup and Wandee Real Estate & Services

Official logotype of Wandeegroup Asia Company Limited and Wandee Real Estate and Services Company Limited. 2003 - present


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Wandeegroup Asia Company Limited

Facebook website: Wandeegroup Asia Co. Ltd.

Wandee Real Estate & Services Company Limited


Business name: Wandeegroup Asia Co., Ltd.

Company registration number: 0205564017941

Objectives: Building design, construction and consulting


Juristic person type: Limited company

Date of incorporation: 11 June 2021

Registered capital: THB 5,000,000.00

Board of directors: Thiti Teerachin

CEO: Mario Kleff

Business name: Wandee Real Estate and Service Co., Ltd.

Company registration number: 0205546012534

Objectives: Broker business consulting

Website: Wandee Real Estate and Service Co., Ltd.

Juristic person type: Limited company

Date of incorporation: 10 Sep 2003

Registered capital: THB 300,000,000.00

Board of directors: Bhumeth Issarasilp

CEO: Mario Kleff

Business name: Wandee Super Span Co., Ltd.

Company registration number: 0205565031514

Objectives: Post tensioning concrete, steel beam design and construction

Website: Wandee Super Span ™

Juristic person type: Limited company

Date of incorporation: 05 Aug 2022

Registered capital: THB 2,000,000.00

Board of directors: Saranya Wongsasintan

CEO: Mario Kleff


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