As a professional construction service company, PT. Tirta Restu Ayunda have joined few profesional associations such as GAPEKSINDO, GAPKAINDO and KADIN.

1. GAPEKSINDO
GAPEKSINDO is an organizational forum for companies working in the field of construction service which includes architectural, civil, mechanical, electrical engineering and environmental masterplanning.

2. GAPKAINDO
GAPKAINDO is a professional association which act as a forum for Indonesian Water Contractor Businesses which established, located and performed its activities in the Republic of Indonesia's Law Region. Individuals or businesses, whether corporated or non-corporated. Whether alone or together via agreement to perform business activity in the Economic Sector as well moving in the business field of Construction Service and Goods Supplying which relates to the business of construction service.

3. KADIN (Kamar Dagang dan Industri Indonesia)
KADIN act as a forum as well as a communication, information, representation, consultation, facilitation and advocation platform for Indonesian businesses, between businesses and the governments, and between foreign and local businesses.