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Nittaya Wongsin: Steering Wandeegroup with Trust & Honesty

In the uncertain waters of today's property market, mutual honesty and trust seem to be the lighthouse guiding the way. Nittaya Wongsin, a stalwart in Pattaya's business world, voices her strong beliefs on how businesses ought to conduct themselves, especially when the going gets tough.

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Building Business on Trust and Honesty

Build Pattaya | News, October 01, 2023

Everywhere you look, from Pattaya to the global stage, the property market faces challenges. Yet, it's precisely during these trying times that Nittaya believes businesses should tighten their bonds of trust with their customers. A genuine, open, and trustworthy relationship is the foundation that will benefit everyone involved.

Editor's Note

In this feature, we delve into the views and life journey of Nittaya Wongsin, Joint MD of Wandeegroup. Her insights on mutual trust and honesty in the business landscape of Pattaya offer a timely perspective for companies operating in challenging times.

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Behind Wandeegroup’s Success: A Dynamic Duo

While her husband, Mario Kleff, is busy transforming Pattaya's architectural landscape, Nittaya manages the day-to-day operations at Wandeegroup. With nearly 150 employees and billions in contracts, her leadership is pivotal. Together, they strike a balance—Mario's passion for design complemented by Nittaya's pragmatic approach to business.

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Journey of a Business Magnate

Born in Pattaya to an influential family of Chinese descent, Nittaya's journey took her from the halls of international universities to the corridors of the Stock Exchange of Thailand. Her diverse career, spanning roles in Japanese construction to the marketing world of Avon, enriched her with invaluable experiences. These have been instrumental in shaping the Wandeegroup we see today.

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Challenges and the Need for Trust

In the course of her role, Nittaya has observed a significant challenge: businesses not being forthright about their financial health. She ardently believes that open communication is the cornerstone of a good partnership. In an industry riddled with financial intricacies, transparency and trust are more essential than ever.

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Complementary Partnerships

Mario praises Nittaya's grounding influence on him and credits her for forging key community relationships. Their partnership is a testament to the power of combining vision with pragmatism. Both have learned from each other, leading to the massive success of their venture.

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Wandeegroup's Impressive Portfolio (2007-2009)

In a short span, Wandeegroup has delivered an impressive array of projects


  • Sky Park Twin Towers TH, high-rise building
  • Park Side Shopping TH, multi-story department store
  • The Wong Amat Tower or W-Tower TH, high-rise building
  • The Baptist N.Y., high-rise building
  • J.R. Towers TH, high-rise buildings
  • Suan Sawarn TH, 13 condominium buildings, low rise
  • Club Royal TH, 6 condominium buildings, low rise
  • Leto Residence TH, condominium building, low rise
  • Laguna Heights TH, condominium building, low rise
  • The Wave TH, 2 buildings (condominium/hotel), low rise, low rise
  • Park Royal Series TH, 6 condominium buildings, low rise, low rise
  • South Beach TH, condominium building, low rise
  • On The Hill TH, condominium building, low rise
  • Premier Boutique TH, condominium building, low rise
  • I-Condo or Home Boutique TH, 2 condominium buildings, low rise
  • Marraka Residence TH, condominium building, low rise


  • Wing House TH
  • Zen House TH
  • Koi House TH
  • Leonardo House TH
  • Capsule House TH
  • Japanese House I, II and III TH
  • Falling Rain TH
  • Zig Zack House TH
  • Waterfall House TH
  • Star House TH
  • Bird House TH
  • The Japanese Townhouse TH
  • Village (3 buildings) TH
  • Resort (43 buildings) TH
  • Showroom Wong Amat Tower TH
  • Church, multi-story TH
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In the fluctuating world of business, Nittaya Wongsin's emphasis on mutual trust and honesty stands out. It's a timely reminder for all businesses, big or small, that genuine relationships are at the heart of sustained success.

MK Mario Kleff

Construction & Architecture

In Pattaya City, architect Mario Kleff leads in building quality. From modern condominiums to ultra luxury villas, choose Wandeegroup Asia for unparalleled construction and innovation. For expert concrete post-tensioning Wandee Super Span Co Ltd.

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Who is Nittaya Wongsin?

Nittaya Wongsin is the Joint MD of Wandeegroup, emphasizing the importance of trust and honesty in the business world of Pattaya.

What role does Mario Kleff play in Wandeegroup?

Mario Kleff, as the fellow Joint MD of Wandeegroup, focuses on architectural designs, changing Pattaya's skyline with innovative constructions.

Why does Nittaya Wongsin stress the importance of mutual trust in business?

Nittaya believes that in challenging times, especially in the property market, businesses should foster genuine, open, and trustworthy relationships with their customers.

What has been a significant challenge observed by Nittaya in the property business?

She notes that many businesses are not forthright about their financial health, leading to a lack of transparency and trust in the industry.

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From 2006 to 2012, the visionary Mario Kleff, leading his esteemed Wandeegroup, crafted a remarkable portfolio of over 50 condominium buildings. In this period, their prolific output remained unmatched, setting them apart as the preeminent builder and architect of their time in Pattaya.