SINMAR ALRIYADH CO is a privately-owned general contracting company established on 1 January 2006 in Riyadh, Saudi Arabia. Specialising in MEP (Mechanical, Electrical, and Plumbing) contracting, SINMAR has built a distinguished reputation across residential, commercial, and industrial projects throughout the Kingdom, and remains a leading name in the MEP construction field.

SINMAR provides full-scope MEP contracting services across three disciplines. Mechanical: HVAC systems, piping systems, mechanical equipment supply & installation, and fire fighting systems. Electrical: power distribution, lighting systems, and low current systems (Fire Alarm, CCTV, PABX, Public Address, Access Control, Data Network, BMS). Plumbing: water supply systems, drainage systems, gas systems, and plumbing fixtures.

SINMAR has over 20 years of presence in the MEP contracting market, with a specialized and certified team of engineers with deep experience in their respective fields. This expertise underpins SINMAR's solid track record across prestigious projects throughout Saudi Arabia.

SINMAR ALRIYADH CO holds three ISO certifications issued by QA Certification: ISO 9001:2015 (Quality Management Systems, Cert. No. 14143455), ISO 14001:2015 (Environmental Management Systems, Cert. No. 14143456), and ISO 45001:2018 (Occupational Health & Safety Management Systems, Cert. No. 14143454). All certificates are valid through 05 January 2029.

SINMAR has delivered MEP works for a wide range of prestigious clients including Qiddiya Investment Company, New Murabba Development Co., IHG (InterContinental), SELA, Royal Air Force, MAERSK, Retal Urban Development, Mohamed Al Habib Real Estate, Modern Bus Company, Matardat Holding, Binzagar Logistics, Agility Logistics, and Al Shaya, among many others.

Yes. SINMAR is an approved vendor for Saudi ARAMCO, SABIC, PetroRabigh, Al Fanar / NESMA, and is approved for projects at King Abdul Aziz Port, Dammam. These approvals reflect SINMAR's compliance with the highest industry standards and its proven capabilities on major infrastructure projects.

SINMAR offers nearly two decades of MEP contracting expertise, a certified engineering team, and a proven track record of over 75 successfully delivered projects across Saudi Arabia. The company's strength lies in excellent inter-departmental coordination — spanning engineering, procurement, planning, logistics, finance, and HR — ensuring projects are delivered on time and within budget.

Yes. SINMAR's sister company is AL TABAQAT METADADA FOR TRADING (MULTILAYERS), which supplies PE-RT/ALU multilayer pipes (MAINCOR, Germany), puddle flanges (Seamless, ERW, HDPE, uPVC), seamless and ERW pipes, and plumbing and HVAC valves. MULTILAYERS also covers low current works and software development solutions.

You can reach SINMAR at our Riyadh office: Bldg 4706 (1st Floor), Office 1, Umar Bin Abdul Aziz Road, Ar Rabwa, Riyadh, KSA. Tel: 00966-11-2923661. Email: info@sinmarmep.com. Visit us online at www.sinmarmep.com. C.R. No. 1010215217, P.O. Box 6945, Riyadh 12816.