Our vision is to build an indigenous engineering and trading company that will be the best in this country in terms of quality and effectiveness, while at the same time being able to compete effectively with the foreign companies on a global level.
This firm was registered in 1995 and commenced full business in 1997. CHIEF CORNERSTONE INVESTMENTS Limited is engaged in Building and Civil Engineering Construction works, export of agricultural products and mining/quarrying.
In the year 2011, We diversified into mining and granite quarrying activities. This has led into the establishment of a quarry along Dutse Bmuko Road in Dutse, Bwari Local Government Area of the Federal Capital Territory of Nigeria.
We have also been engaged in the export of charcoal, timber, sesame seed and palm kernel shell.

Our vision is to build an indigenous engineering and trading company that will be the best in this country in terms of quality and effectiveness, while at the same time being able to compete effectively with the foreign companies on a global level.
Our directors and engineers are professionally qualified, experienced and adequately exposed technocrats in the industry.
| No. | Owner | Cost | Status |
| 1 | Construction of Block Of Duplexes For Mrs Ruth Popoola At Gwarinpa II Estate, Abuja , FCT. | N41 million | Completed |
| 2 | Residential Development for Mr. M.O. Abimbolu at Ijebu-Igbo, Ogun State. | N8.1 Million | Completed |
| 3 | Residential Development for Alhaja M.B. Shagaya at Ruxton Road, Ikoyi, Lagos. | N8.2 Million | Completed |
| 4 | Construction of 2-No Reinforced Concrete Bridges for Ogun State Forestry Plantation Project, Area J4, Ijebu-Ode, Ogun State (A.D.B. assisted) | N3.713 Million | Completed |
| 5 | Construction of Canteen Building, 9 Blocks of Shops, 4No Toilet Buildings, Overhead Water tank and Surface tank at Karu International Market (via Abuja) in Nasarawa State | N27 Million | Completed |
| 6 | Residential Building for Mr. Ade Aruna at Alaba, Ojo L.G.A., Lagos State | N12.1 Million | Completed |
| 7 | Residential Building for MEMCO NIGERIA LTD. At Gbagada, Lagos | N15.0 Million | Completed |
| 8 | Residential Building for Mr. Victor Osadolor at Victoria Garden City, Lagos | N12.4 Million | Completed |
| 9 | Engineering Design of Panyam - Bokkos - Wamba Road in Plateau & Nasarawa States (Total length 103km including 6 bridges and many culverts) for Federal Ministry of Works, Abuja | N 69million | On-going |
| 10 | Construction of a new Church Building (for 5000 worshippers) for Redeemed Church of God, Master's Place, Gbagada, Lagos | Labour Cost = N9.50million Materials' Cost= N90.0 million |
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| 11 | Construction Of Block Of Duplexes For Mr & Mrs OLUYEMI at Plot 199, Road 4421, Gwarinpa Estate, Abuja | N60 million | |
| 12 | Construction Of Duplex & Boy's Quarters for Mr & Mrs Gbenga Oluyemi , at Victoria Garden City, Lekki Peninsula, Lagos | N53 million | Completed |
| 13 | Construction Of Block Of Duplexes For Engr. A. L. OYEDIRAN at Gwarinpa Estate II, Abuja, FCT | N50 million | |
| 14 | Renovation Of Melanby Hall, University Of Ibadan , Ibadan | N7.0 million | Completed |
| No. | Fullname | Position | Qualification | Academic History |
| 1 | ENGR. O. O. OLUYEMI | Managing Director |
B.Sc. Civil Engineering, University of Lagos M.Sc. Civil Engineering, University of Lagos M.N.S.E. 1990 F.N.S.E F.N.I.Struct.E COREN Reg. No. R4324 N.S.E. Reg. No. 04486 |
Mr. Oluyemi studied Civil Engineering at the University of Lagos between 1981 and 1986. He bagged a Master of Science degree in Civil Engineering from the Lagos University in 1988. He began employment in Ladiom Associates (Consulting Engineers) in Lagos in 1987 where he gained a wealth of experience in civil engineering designs, construction management and supervision. In 1989, Mr. Oluyemi joined the office of Hancock Ogundiya & Partners and became a Partner in 1991. Mr. O.O. Oluyemi was elected a member of the Nigerian Society of Engineers in 1990 and was registered by the Council of Registered Engineers of Nigeria (COREN) in 1991.He was elected a Fellow of the Nigerian Society of Engineers in December 2007. Mr. Oluyemi has worked on many Structural and Civil Engineering projects before joining Chief Cornerstone INVESTMENTS Limited and he is currently the Managing Director of CHIEF CORNERSTONE INVESTMENTS LIMITED. |
| 2 | MRS. ADEFUNKE OMOSALEWA OLUYEMI | Deputy Managing Director | B.Ed in French & Education |
MRS OLUYEMI studied Civil Engineering at the Lagos State University where she bagged a Bachelor of Education degree in French & Education. She earlier attended the St Andrews College of Education ,Oyo in Oyo State where she obtained the National Certificate in Education (NCE) with specialization in French & Education. In the year 1992, Mrs. OLUYEMI joined the office of LEVENTIS FOUNDATION NIGERIA LTD/GTE where she worked in several capacities till 1998. Mrs. OLUYEMI has worked on many Building projects since she joined Chief Cornerstone Investments Limited and she is currently the Deputy Managing Director of CHIEF CORNERSTONE INVESTMENTS LIMITED. She is also versatile in sourcing agricultural products for exports. |