1:2:4 Designs

1:2:4 Designs ltd was incorporated in the new millennium by a team of experienced Architects & Engineers who worked together over 16 years at a leading Consultancy firm on several land mark projects in Sri Lanka. The company was launched with the idea of exploring a new dimension in the quest to enrich the environment with its combined creative talents. Being committed to conserve the bounty of nature, 1:2:4 Designs will ensure that the built environment will harmonize with its surroundings. The selection of eco friendly material combined with energy saving technology, 1:2:4 Designs will strive to provide a sustainable construction equation to protect the resources of our planet while presenting man made structures of excellence that make life worth living.


Designs Completed

Projects Completed

our creative team

Navin Gooneratne, Founder Director of Design Consortium Ltd, which was established in 1976, and counts over 40 years of experience in the fields of Engineering, Architecture, Interior Design, Landscaping. Functioned as the Chairman/Director General of the Southern Development Authority of Sri Lanka from its inception in 1996 and was responsible for initiating the Ruhunupura Nature City, a Mega Project to create a global hub for trade & commercial centre in Southern Sri Lanka.

Roshan Chandrarathne, Post Graduate Education is in Architecture with an emphasis on Philosophy and Theory of Architecture while Under Graduate Education in Built Environment, with an emphasis on Vernacular Architecture and Principles of Organic Construction Methodology. Professional Exposure in Designing and Detailing spans both in Local and Foreign Projects in the fields of Hotels, Resorts, Institutional Buildings, Personalized Housing, Apartments and Commercial Buildings. Work experience commenced as a Junior Architect in the UDA (Urban Development Authority-Sri Lanka) from year 1996 to 1997, as a Senior Architect in a Private Sector Practice from year 1999 to 2000 and as a Chartered Architect in 1:2:4Designs (pvt) Ltd from year 2001 to date. Presently the Managing Director of 1:2:4 Designs (pvt) Ltd.



BSc (Eng), CEng, MIE (SL)
Light of Asia Foundation
SAMA International Trust
Radiance Films International
Siddhartha The Buddha
Mahathma Gandhi Center- Sri Lanka
Sakya Kingdom Trust of Sri Lanka
Musaeus College- Colombo

Roshan Chandrarathne

Principal Architect
Managing Director
B.Sc.(BE) Hons., M.Sc.(Arch), AIA(SL)
Senior Visiting Lecturer
Srilanka Institute of Information Technology(SLIIT)
City School of Architecture(CSA)
Archt. Purnima Jayasekara
Chartered Architect
B.Sc.(BE).Hons, M.Sc.(Arch), AIA(SL)
Archt. Manori Sanjeewani
Chartered Architect
B.Sc.(BE).Hons, M.Sc.(Arch), AIA(SL)

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1:2:4 Designs Pvt Ltd
1st Floor, Light Of Asia Centre,
634 Sama MW, Battaramulla, Sri Lanka

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