Since our inception, we have developed a trusted and reliable construction company by building lasting relationships with our clients, employees, suppliers and contractors.”

The company was initially formed in 2011 and it was first known as Ranma Construction and Engineering (PVT) Ltd. At the beginning company operation was fully focused on road construction projects of North Central province under PRDA and RDA authorities. Mainly Company was operating 2 metal crusher plants owned by the company in Madawachchiya and Kabithigollawa supplying aggregate for A9/A12 roads projects and PRDA projects. Then the company moved on to the civil construction in 2014 with the guidance of Industry well know and a pioneer Charted civil engineer Mr. Mohan Rathnayake appointed as the Chief Civil engineer. Then the company gradually moved on to civil construction such as high-rise building, commercial building, Hotels, Luxury Villas, And Homes. In addition, N B Construction joined hands with well experienced and professional consultancy firms and individual consultants who have the capacity of taking care of any size of projects consultancy.

Today N B Construction is an ICTAD C4 registered company and takes on the role of main contractor for any scale project and performs project management services to coordinates specialist trades for industrial/commercial projects. We also provide design inputs and engineering solutions as value-added services to our clients. Our objective is to provide our clients with an “I am assured” experience when we are chosen to execute their projects. Our emphasis on clear communication and follow through procedures ensures that client’s objectives are top priority in the planning and execution of all our processes.

Our Project Management & Execution Philosophies are:

  • To create detail schedule and resource plans to meet client’s project objective,
  • Communicate clearly with all project stakeholders,
  • Track project progress and fine-tune deviations,
  • Supervise closely on quality of work done
  • Complete and commission the project on time

Legal Partner

  • Weerasinghe & Co (Chartered Accountants)
  • Secretaries – A M Buddika Subhashinie
    Alagiyawanna,No. 36/1/B/9, Moden lawyer’s offfice complex. St. Sebastian hills, Colombo 12

Banking Partners

  • National Development Bank
  • Bank of Ceylon
  • HNB

NB construction is a professional builder and design and build company in Sri Lanka. We render our service with a team of professionals to increase the quality of life.


We practiced every single quality control measure to ensure the quality of delivery


Time is most important and we are guaranteed to meet the deadline.


We are flexible and providing our range of services to meet the client’ budget while prioritizing the quality of delivery

We are not just providing shelter or a building but also an environment where people can live, work and achieve.


Mainly N B construction undertakes Design and build projects including commercial buildings, residential buildings as well as renovation projects, it consists its own Charted Architect, Charted Structural and civil engineers, Charted Service engineers and Charted Quantity surveyors.



  • Architectural
    design “concept to creation” – unifying concepts in
    to a coherent and make clients’ need realistic
  • Structural Design
    design the framework for architectural design to withstand the stresses and pressures of their environment and remain safe, stable and secure through their use.
  • Service (Mechanical, Electrical, Plumbing)
    it is an important aspect in a building that
    required for create a safe and comfortable
    environment inside the building.


  • Civil Construction
  • Steel Construction
  • Electrical
  • Plumbing
  • Mechanical
  • Aluminium and Glass
  • Wood work
Project Consulting

Project Consulting

  • Structural engineering consultancy
  • Structural analysis and review
  • MEP Services
  • Architectural Consultancy

Machinery Strength

We are a power house that combines great machinery with great intellects.
It makes us independent and allows us to be cooperative with other builders by renting out our machinery strength with them.

Six wheel delivery truck




Other Power




N B Construction (Private) Limited
Registration No: PV78555
1/J/5, Sapugaskanda road, Makola, Kiribathgoda, Sri Lanka

 (+94) 11 4 848480
 (+94) 11 2 488482

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