Built on
51 Years of
Engineering Trust.
O A S Contracting is a multidisciplinary MEP engineering company delivering integrated building services across Saudi Arabia — from design to commissioning.
Mechanical (M)
HVAC, duct fabrication, chiller plants, firefighting systems
Electrical (E)
Medium voltage, automation, smart systems, lighting protection
Plumbing (P)
UPVC, PPR, HDPE, fuel gas piping, water supply & drainage
Engineering Excellence Rooted in Saudi Arabia
O A S Contracting is a multidisciplinary engineering and contracting company specializing in Mechanical, Electrical, and Plumbing (MEP) solutions. We deliver integrated building services that combine innovation, reliability, and efficiency for projects across Saudi Arabia.
Our team of experienced engineers, supervisors, and certified technicians covers HVAC, plumbing networks, firefighting systems, electrical installations, and smart systems. From design and estimation to execution, testing, and commissioning, we ensure every system is engineered for performance, safety, and long-term reliability.
We have a proven record of delivering turnkey MEP works for government, commercial, healthcare, hospitality, and residential clients — always compliant with Saudi Building Code and international standards.
Full-Spectrum MEP Engineering
Mechanical
HVAC systems, duct fabrication from our own factory, chiller plants, carbon steel and copper piping, and complete firefighting systems.
Electrical
Medium voltage, low current systems, small power, automation, smart building systems, and lightning protection installations.
Plumbing
UPVC, PPR, HDPE piping, fuel gas networks, water supply systems, and complete drainage infrastructure for any scale.
Design & Turnkey
Solutions
From the first sketch to the final handover — OAS manages every phase in-house. No hand-offs. No delays. One team accountable from concept to commissioning.
Start Your Project →Concept & Estimation
BOQ, feasibility study, and detailed cost plan before a single contract is signed.
Engineering Design
Full MEP and architectural design, BIM coordination, and shop drawings in-house.
Procurement & Execution
Direct procurement, certified installation teams, and zero subcontracting.
Testing & Handover
Commissioning, as-built drawings, authority approvals, and full warranty handover.
Our 7 Divisions
Turn Key
Solutions
Precruitment
Interiors
Factory
Trusted by the Kingdom's Biggest Names
Ready to Work Together?
Let's discuss your next MEP project. Our certified MEP team is ready to deliver.