Structa Engineering / Colombo / Since 2017
House design, architecture and engineering for Sri Lankan living.
One ISO-certified team coordinates your home from the first site response to architecture, structure, interiors and the drawings needed to build.
2,000+house designs completed
ISO 9001:2015 certifiedcertified quality system
4.9/5 163 Google reviewsA complete residential design practice
Not a façade first.
A whole home, resolved together.
Good house design begins with your land and the way your family lives. Structa brings architects, engineers, designers and quantity surveying expertise into one process so decisions connect from room layout to the structure and services behind the walls.
How Structa began
01
Every project begins with the site.
Services / coordinated set
Every drawing your home needs.
From outside to inside
A home is one connected system.
Three layers, one design intent—from the form you see to the details you live with and the engineering you rely on.
Carry the idea into daily life.
Make every decision buildable.
Why homeowners choose Structa
Design ambition, grounded in engineering discipline.
Structa started with structural work in 2017 and expanded into residential design and build. That engineering foundation still shapes how every home is resolved.
Why Structa- 01
One coordinated team
Architecture, structure, services, interiors and quantities are developed as one connected drawing set.
- 02
Designed for Sri Lanka
Plans respond to tropical light, ventilation, rainfall, privacy, local approvals and the reality of your site.
- 03
See it before you build
3D visualisation makes space, proportion and materials easier to understand before construction begins.
- 04
A documented quality system
Structa’s ISO 9001:2015 certification supports a consistent, accountable design process.
Independent recognition
Internationally recognised.
Locally accountable.
Structa’s architectural, construction and interior-design work received two honours at the National Architecture and Interior Design Excellence Awards, Global Edition. The firm’s leadership was also profiled by CEO Magazine Sri Lanka in its Dare to Lead edition.
Trusted & Innovative Architectural Design, Construction & Interior Design Firm of the Year
National Architecture and Interior Design Excellence Awards, Global Edition — Residential, Commercial & Futuristic Design Approach.
Verify the recognition30 Under 30 Trendsetter & Creative Designer of the Year
Awarded to Structa founder Eng. Rajmohan Rajragavan for creative design and leadership.
Verify the recognitionCEO Magazine Sri Lanka — Dare to Lead
Eng. Rajmohan Rajragavan was profiled in “Building Dreams, One Structure at a Time”.
Verify the recognition4.9/5Google rating from 163 reviews
Awards, clients and company storyHouse design directions
Made for tropical light, shade and landscape.
Explore visual directions across compact, urban, single-storey and contemporary tropical homes. Images are design references; completed projects are presented separately.
Free house-design library
2,000+
Years of house-design thinking, open to explore.
Browse the growing visual archive for free, save useful directions and bring the ideas you like into your first consultation.
Explore house designsDesign packages
Choose the right level of documentation for your home.
Silver covers design and approval, Gold adds engineering and the Bank BOQ, and Platinum documents the whole house. Compare every deliverable side by side.
Compare design packagesIndependent client feedback
Rated 4.9/5 on Google.
“Excellent coordination, timely delivery. Highly recommend.”
“Superb design was done by the team. Love the work.”
“Professional, creative, and detail-oriented.”
People behind the drawings
A multidisciplinary team, not a hand-off chain.
Leadership, architecture, design, quantity surveying and client coordination work around the same project information.
Meet the full team
What house design services does Structa provide in Sri Lanka?
Structa coordinates house planning, architectural design, 3D visualisation, structural engineering, interior design, electrical and plumbing drawings, approval documentation and BOQs according to the selected package.
Can Structa design for land outside Colombo?
Yes. Structa is based in Colombo and serves homeowners across Sri Lanka. Start with your location, land information and requirements so the team can advise on the next step.
Can I browse house designs before starting a custom project?
Yes. The free house-design library provides a growing set of visual references that can help you identify styles and ideas before a consultation.
Does Structa handle both architecture and structural engineering?
Yes. Coordinating architecture and structural engineering within the same design workflow is a central part of Structa’s service.
Begin with a conversation