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About Us

Transforming the lives of the disadvantage households, by building sustainable social, affordable and mid-range homes, creating life changing opportunities and a positive impact on local communities and the people within them.

This will be achieved through :

  • Building social and affordable housing.
  • Creating training and apprenticeship opportunities.
  • Creating employment and new business opportunities.

OTSIT Group is creating a legacy by addressing Southeast Asia’s rising population, 1 billion people, through Sustainable Renewable Smart Communities.

Increased urbanization, scarcity of resources and climate change will be transformed through renewable and sustainable solutions linking community and industry, working together.

Community : Building more than housing , creating communities.

Schools, recreation, health and child care facilities and community spaces are integral to all of our projects.

Support : Through the provision of education and the creation of employment individuals and families will be supported to create new opportunities.

Our Partner

Our Team

Our Team

This is our dedicated and caring team

George Attewell

Group CEO

George started his career as a carpenter, spending the next 15 years working and running residencial and commercial building sites throughout London.

Steven Luk

Acting CFO

Steven Luk has more 20 years of working experience in audit, tax-compliance and consultancy, which includes an international accounting firm (which is part of the current Big 4) before becoming the founder of Coleads Business Consultants Pte Ltd in 1996.

Dr Irene S. M. Lee

Renewable Energy Director

Dr Irene S. M. Lee is presently an entrepreneur in the renewable energy/solar industry, in the development and building of renewable energy solutions for eco cities, residential, commercial, industrial, micro grid and utility scale projects in Asia and other countries.

Sacha Schwarzkopf

Design and Planning Lead

Bringing more than 25+ years of experience, Urban Designer Sacha Schwarzkopf’s expertise extends from planning and conceptual design through schematic design and construction administration.

Adam Ellis

Construction Manager Housing

Adam has 20+ years’ experience in construction and lead crews all over the world in both developing and developed worlds.

Mima Irma Hutabarat

Vetiver System Director

Irma Hutabarat first came to national prominence when she headed the Committee funded by ADB that led to the formation of the National Anti-Corruption Commission.



Have a project in mind? We'd love to hear about it. Contact us by phone or email and we'll get in touch.

Our Office

Ruko De Mansion Blok CD1 Kunciran

Kec. Pinang, Kota Tangerang, Banten 15143

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+62 21 50914756