Geospatial Surveying, Engineering & Construction Services

Our History

Construction Technological Services (CTS) was established in 1994 by our founder and former Managing Director, Mr. D.M. Thilakarathne. Initially, Mr. Thilakarathne founded CTS to provide specialist engineering survey-related services to clients in the private and public sectors. In 2013 we developed a strong relationship with the public sector in their irrigation engineering projects.

Subsequently, the company was involved in the engineering survey and design aspects. As a result, CTS has adopted the most advanced technologies in engineering surveys and strengthened its human resources with the most experienced and capable workforce.

Being involved in such nationally significant projects meant that interest in our company and the services we offer expanded substantially, enabling us to become the multi-disciplined engineering consultancy we are today.

The growth and success of CTS is driven by an absolute focus on two groups of people; our clients and our employees. We intend to form long-standing partnerships with our clients, supporting them with industry-leading solutions to their problems and an unrivaled level of service. In addition, we recruit the best people in our industry, support them in developing their skills and encourage them to grow with the business.


Construction Technological Services

Our Strengths


Years in Business


Projects Completed


Satisfied Clients



A Corporate Member of
International Federation of Surveyors (FIG)

We are a proud corporate member of the International Federation of Surveyors. FIG is the UN-recognized global organization for the profession of surveying and related disciplines.

FIG Corporate News

FIG Corporate Member Registry

Civil Engineering Consultancy Services

CTS Provides Engineering Consultancy services for Construction Projects. This includes conducting preliminary surveys, environmental and social impact assessments, initial estimation and design, bathymetric surveys, topographic surveys and construction services. In Addition, CTS provides design and estimate services for Irrigation projects.

Drone Surveying

Using Unmanned Aerial Vehicles (UAV) for Surveying has driven modern surveying into the next era. It's relative cost-effectiveness and the capability to capture data with multiple sensors such as RGB, multispectral cameras, or LiDAR sensors has allowed surveyors to bring surveying into the 21st century. In addition, drones can capture data in hazardous, hard-to-reach places with unparallel detail and accuracy. CTS has been an early adapter and the pioneer in the Sri Lanka drone survey segment.  


Structural and Geodetic monitoring is vital in keeping lives safe while increasing environmental well-being. CTS provides tailor-made manual and automated monitoring systems for projects depending on their client's needs. CTS uses modern geodetic and geotechnical instrumentation and software to monitor and study structures. In addition, CTS has established monitoring systems for structures with national importance.

GIS Related Services

Every industry in the modern-day world uses location-based data to communicate, perform analysis, share information and solve complex problems. CTS can develop, collect, and analyse spatial data with custom GIS solutions for any industry. GIS solutions and remote sensing data can elevate information and analysis for any enterprise with impeccable accuracy.

ISO 9001:2015 Certified Company

We have obtained the ISO 9001:2015 Quality standard certification for our quality management process. We are dedicated to providing the best quality service for all our local and overseas clients. We adhere to international business standards, ethics and best practices.

Our Vision

To be the professional most efficient consulting organization in the engineering sector.

Our Mission

To be an internationally recognized Consulting firm, maintaining optimum performance and accuracy in all aspects of construction phases through assigning the best professionals and the use of state of the art technology.

Our Goal

Our goal is to become a major engineering consultancy service provider in Sri Lanka while developing our business in other countries.

Our Clients


Our Professionals

Ruwan Dissanayake

Managing Director
Ruwan is a Geographic Information Systems (GIS) Specialist with 14 years of professional experience. He possesses extensive expertise in Conventional terrestrial surveying, Drone Surveying, Bathymetric surveying, Structural monitoring, Geographic Information Systems (GIS) and Remote Sensing. Ruwan holds a Master's Degree in Geoinformatics from the university of Colombo and a bachelor's degree from Northumbria University England.

D.M. Thilakaratne

Chief Surveyor
Thilak is a professional surveyor with over 40 years of experience. He has been involved in many projects of international and national importance. Thilak is a registered, licenced surveyor who graduated from the University of Moratuwa and the Institute of Surveying & Mapping, Diyathalawa (ISMD).

D.M.M.B Dissanayake

Registered Licensed Surveyor
Mr Dissanayake is a retired senior survey superintendent of surveys for the Sri Lanka Survey Department. He conducted visiting lectures at the university of Sabaragamuwa and ISMD. He is a Fellow member of the Survey Institute of Sri Lanka.

Prof. Manjula Ranagalage

Geoinformatics Consultant
Prof. Ranagalage is the Head of the Department for Environmental Management at the Faculty of Social Sciences & Humanities at Rajarata University of Sri Lanka. He Provides his consultation and extensive expertise in Geospatial science for CTS when needed. He received his PhD in Science in Geo-Environmental Sciences at the University of Tsukuba. Further, he obtained MA in Geography from the University of Sri Jayewardenepura, MSc in Geo-Informatics from the University of Peradeniya, and BA Special in Geography (First class Hons) from the University of Colombo.

Eng. M.V.G. Gunewardene

Consultant Charted Engineer
Mr Gunawardene is a chartered civil engineer with experience in structural and irrigation engineering projects. He has been involved in many funded projects in Sri Lanka for the past 40 years. He obtained his civil engineering bachelor's degree and environmental water resources engineering and management postgraduate diploma from the University of Moratuwa. He provides Consultancy services for the company.
Our elite team of professionals are ready to provide the best solutions and services to you.
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