The Institute of Surveyors of Trinidad and Tobago (ISTT) was established as a non-governmental organization in 1996 upon the amalgamation of the Land Surveyors Association of Trinidad and Tobago (1948), Quantity Surveyor's Society of Trinidad and Tobago (1963) and ProVal (the Association of the Valuation Surveyors) (1975). The Institute plays a pivotal role in providing the Minister with responsibility for Lands and Land Surveying advice on several types of nominees that enable the enactment of the Land Surveyors Act 33 of 1996 (Act).

The ISTT membership is comprised of professionals in the fields of Valuation Surveying, Quantity Surveying and Land Surveying. Land Surveying also includes the sub areas of hydrography, engineering, cadastral and land management, photogrammetry, cartography and geodesy.

The ISTT provides for the registration of Full Members, Associate Members, Student Members and Honourary Life Members who are engaged in the various levels in the profession of surveying within the Republic of Trinidad and Tobago. It also serves as the main stakeholder representing local surveying professionals and provides training, dissemination of information to the public and advice to both surveyors and the public.

The institute is run by a Board of Directors, elected from its Full Members on an annual basis.

President Joseph Affoo Quantity Surveyor 292-9111
President Elect Lenny Hanomansingh Land Surveyor 620-4777
Immediate Past President Sunil Lalloo Land & Valuation Surveyor 238-3697
Vice President Dinelle Ramkoon Land & Valuation Surveyor 466-8446
Secretary Shiva Kissoon Valuation Surveyor 390-6411
Treasurer Marlene Agge Valuation Surveyor 299-8999
Public Relations Officer Nicholas Westmaas Land Surveyor 688-9602
Assistant Secretary Abraham Derry Valuation Surveyor 737-3113
Assistant Treasurer Marlon Jackson Quantity Surveyor 387-2828
Member Colin Charles Quantity Surveyor 681-0997
Member Dexter Davis Land Surveyor
Member Paula Drakes Land Surveyor 756-8830
Member Lizabeth-Ann Hamilton Land Surveyor 686-4195
Member Ria Ramos Valuation Surveyor 762-1938
Member Nigel Ramsey Quantity Surveyor 352-0528
Member Michael Samms Quantity Surveyor 678-6116
Member Robert Williams Quantity Surveyor 747-9521