Elevating Sri Lankan Lifestyles and Modern Workspaces
From architectural concept, structural engineering, and municipal approvals to turnkey execution across Colombo, Galle, Kandy, and island-wide.
Designing & Building Modern Facilities with Uncompromising Quality, Comfort, and Longevity
Elara Multi-Tier Commercial Hub
Turnkey design & build completed in Colombo 07. Integrated solar facade, fair-faced concrete, and tropical biophilic architecture.
Completed Projects
Commercial complexes, boutique hotels, factories, and luxury private residences across Sri Lanka.
Structural Warranty
Complete legal deed of warranty on foundations, load-bearing concrete frames, and structural columns.
Transparent Workflow
Milestone-based progress with live webcam site feeds, weekly engineering reports, and zero hidden costs.
Fast-Track Delivery
Streamlined pre-engineered components and disciplined site management ensure on-time handover guaranteed by SLA.
Comprehensive Engineering & Turnkey Construction Solutions
We handle everything from initial soil testing and 3D architectural modeling to civil construction, interior fit-outs, and local council approvals.
Land Surveying & Geotechnical Soil Testing
Accurate topographical digital surveys, standard penetration tests (SPT), slope stability analysis, and UDA municipal zoning clearance before breaking ground.
- Digital Total Station & GPS Mapping
- Deep Core Drilling & Soil Load Capacity
- Legal Boundary & Municipal Verification
Turnkey Commercial & Structural Engineering
Heavy-duty reinforced concrete frameworks, pre-engineered steel structures, multi-storey commercial complexes, and industrial warehouse construction.
3D BIM Modeling & Architectural Design
Photorealistic exterior & interior 3D visualizations, structural clash detection, MEP schematics, and virtual walkthroughs before construction commences.
High-End Interior Architecture & Turnkey MEP Fit-Out
Bespoke corporate boardrooms, executive office suites, acoustics, central VRV air conditioning, automated BMS, architectural lighting, and premium Italian marble finishes.
Explore Our Signature Architectural Projects
Browse our curated turnkey developments. Each project can be customized to your specific land dimensions and commercial requirements.
Commercial
The Apex Innovation Tower
From LKR 48MNawala, Rajagiriya
Three-story modern commercial hub featuring acoustic double-glazed curtain walls, rooftop executive terrace, and solar integration.
Luxury Villa
The Sanctuary Tropical Pavilion
From LKR 62MThalawathugoda, Colombo
Biophilic luxury villa featuring cantilevered concrete balconies, internal water courtyards, infinity plunge pool, and natural Kumbuk louvers.
Retail & Mixed-Use
Oasis Boutique Arcade
From LKR 75MGalle Road, Colombo 03
Contemporary open-air retail arcade with high footfall pedestrian planning, tempered frameless shopfronts, and underground vehicle parking.
Commercial
Harbor Corporate Suites
From LKR 42MNegombo Coastal Highway
Streamlined corporate facility designed for maritime logistics companies. Thermal insulated facade with energy-efficient LED automation.
Luxury Villa
Hantana Hilltop Estate
From LKR 68MHantana Mountain Range, Kandy
Earthquake-resilient tiered foundation built on hillside terrain. Panoramic mist-view glazing, timber decks, and geothermal passive cooling.
Industrial & Logistics
Metro Export Logistics Hub
From LKR 89MBiyagama Industrial Zone
Heavy-load laser-screed floor slabs, 12m clear heights, pre-engineered steel portal frames, and automated docking bay bays.
Interactive Sri Lanka Construction Cost Calculator
Estimate your turnkey construction costs based on current Q4 2026 material prices (Melwire steel, Tokyo Super cement, Alumex fittings, and CIDA certified labor rates).
Receive the Full 2026 Commercial & Villa Catalog with Detailed BOQ Breakdown
Over 40 tested architectural floor plans, engineering specifications, structural material checklists, and exact square-foot pricing delivered to your inbox and WhatsApp.
Your information is kept strictly confidential under Sri Lanka Data Protection guidelines.
The Journey to Your Building — Uncompromising Construction Standards
Explore how ONE Commercial Constructions engineers durable structures built to withstand tropical humidity, heavy monsoon rains, and seismic requirements.
Designed for marshy or soft coastal soils common in Colombo and Western Province, preventing differential settlement.
Engineered for multi-storey commercial towers, ensuring absolute seismic stability and zero foundation cracking over 50+ years.
Certified Materials
We exclusively utilize SLS-certified Tokyo Super / Holcim Portland Cement and Melwire high-yield TMT 500 rebar with complete batch mill test certificates provided for every concrete pour.
Cube Compression Testing
Independent laboratory slump and 7/28-day cube crushing tests conducted on every pour, supervised by certified Quality Assurance engineers.
Tropical Anti-Corrosion
Specialized epoxy coatings and corrosion inhibitors for coastal projects in Colombo, Negombo, and Galle to resist aggressive salt-laden ocean air.
Precision 3-Phase Power
Kelani / ACL flame-retardant cabling, dedicated surge protection devices (SPD), industrial distribution boards, and clean backup generator changeover logic.
Pressure-Tested Plumbing
Food-grade high-pressure PPR and uPVC hot/cold water distribution networks, hydrostatically tested at 10 Bar for 24 hours to guarantee zero concealed leaks.
Solar PV & Net Metering
Roof-mounted tier-1 solar panel integrations engineered directly into structural rafters, drastically lowering commercial operating utility costs.
Alumex High-Performance Glazing
Curtain-wall and commercial sliding systems using tempered low-E double glass with thermal breaks to maximize daylight while minimizing heat gain.
Sri Lankan Teak & Kumbuk Timber
Kiln-dried and termite-treated endemic hardwoods with micro-porous UV exterior oil coatings for elegant, weather-resilient architectural screens.
Certificate of Conformity (COC)
Full clearance through municipal fire departments (CMA), drainage authorities, and local urban councils for immediate legal commercial operation.
Our 6 Core Commitments & Guarantees to Every Client
We operate with complete financial transparency, rigorous engineering ethics, and legally binding service-level agreements on every single development.
Fixed Estimate Without Hidden Costs
The price agreed upon in your signed BOQ is final. We absorb material price fluctuations during the project cycle so your budget stays rock solid.
CIDA C1 & IESL Chartered Engineers
Every project is managed on-site daily by qualified corporate members of the Institute of Engineers Sri Lanka (IESL) and certified CIDA personnel.
Certified SLS Materials Only
Direct supplier contracts with Tokyo Cement, Melwire Rolling, Alumex, and ACL Cables ensure zero counterfeit or substandard building components.
Guaranteed On-Time Delivery SLA
We tie contractual milestone deadlines to clear financial compensation penalties if handover dates are delayed without documented force majeure.
10-Year Structural Legal Warranty
Our structures are engineered to last generations. You receive a formal 10-year warranty deed covering columns, beams, slabs, and foundations.
Handover & COC Clearance
We handle all local authority paperwork, water & electricity connections, and obtain the final municipal Certificate of Conformity for keys-in-hand occupancy.
ONE Commercial Constructions (Pvt) Ltd
Sri Lanka's trusted partner for modern commercial architecture and high-end civil infrastructure.