Since our founding in 1952, we have established ourselves as the leading provider for the private and public sector in the built environment, with over 70 staffs networked across West African and wider world.

Professionally driven by the three E's; Excellence, Expertise and Efficiency, committed to improving our profession, ourselves plus our society as a whole through key principles.

Design; forms the centre of our practice.                                                         Innovation + Knowledge; learning and research are the spirit of our firm.   Sustainability; Respect for the natural world motivates our approach     Interdisciplinary Collaboration; we believe in the power of teams.     Purpose; the result of our work is to advance social well-being.

Our work begins by understanding the client's business, and brand, with a clear understanding of their challenges and the context in which they exist, we combine the knowledge, expertise and the talents of our teams to exceed their goals, setting new standards

Interstate Architects Limited has its origins in an architectural practice established by William Harvey Watkins in Bristol, England in 1900. The historic firm was involved in design of domestic, commercial and health buildings in the southwest of England.

A London office was established in 1936 to deal with the ever expanding volume of work in the field of housing in London, subsequently in 1939 Alexander Gray became a partner and the name of the firm was changed to W.H. Watkins Gray and Partners.

In 1952 the then Nigerian Government invited the firm of W.H. Watkins Gray & partners, to design a Teaching Hospital for Nigeria in Ibadan.  As a result of this an office was set up in Lagos, with work expanding to such an extent that a new independent partnership was created under the name of W.H.Watkins Gray Nigeria.

In 1972 young Nigerians were invited to join the partnership as part of an Enterprises Promotion Decree established by the then government.   It was decided in view of the intentions of the Decree that the name of the firm be changed to Interstate Architects to reflect a broader based thinking firm, working in all the States in the Country.

The firm would later be incorporated as a Limited Liability Company in 1987, becoming known as Interstate Architects Ltd (IAL). The Company has accredited members of the N.I.A (with one of its Directors on the N.I.A. board of Council) and registered members of A.R.C.O.N.



Providing a tailored design solution using BIM (Building Information Modelling) as a shared knowledge resource to support decision-making about the design from earliest conceptual stages through to construction.

The design team can provide Interior Design for private residence, corporate space, development, drawing on lifestyle to create a truly bespoke luxurious space, enhancing the building.

Landscape Design approach is aimed at creating stunning outdoor living spaces that are sustainable with the living environment and its surrounding.

Presentations of the entire design concept is made using the latest state of the art technology (Revit /3D studio Max) to provide 3D visual render Models and animation.


Working Drawings produce in BIM to (Nigerian and British) Building Regulation standard

Preliminary Cost estimates provided to ascertain the true costing for proposed scope of works


Construction Drawings produce in BIM to (Nigerian and British) Building Regulation standard



Planning Approval Application

Preparation of Tender Documents



Procurement Management

Contract Administration

Our aim is to objectively and rationally uncover the strengths and weaknesses of the existing business or proposed venture, opportunities and threats as presented by the environment, the resources required to carry through, and ultimately the prospects for success.

The two main criteria's being, cost required and value to be attained. Constructing a detailed analysis of the of the business or project.

Advising on established activities and practices, undertaken by the contracting parties, to ensure that a contract is entered into and performed in a systematic manner.
This ensures that each party fulfils its roles and responsibilities in a most efficient manner.

We provide consulting services in all aspects of tendering, award of construction works and all forms of contract for all variation of projects. 

Producing specification drawings and supervision of JCT Contracts or similar, construction supervision and cost control.

We provide intelligent property & facilities management solutions for healthcare, education, hospitality and corporate clients. Everything we do is designed to deliver the right property and facilities management choices for our customers.

Good decisions are the foundation for successful outcomes, providing advice and service delivery solutions that are uniquely customized for each of our clientele.

Our team consist of people from different backgrounds with distinctive experiences, creating a stimulating work environment, Informing our approach work and allowing for a uniquely informed perspective.

  • Tunde  Aboaba
  • Aboh, Tamara E.
  • Sola-Adebiyi, Oyeyemi
  • Adesina,  S. A
  • Olusola O. Adesina
  • Adetayo, Adebukola O.
  • Sunday A. M. Afolabi
  • Taiwo Aina
  • Adetola J. Ajetunmobi
  • Anikor, Emmanuel Moses
  • Aremu, Adekunle David
  • Lukuman B. Arowona
  • Irene Abimbola Awodipe
  • Yohana Bako
  • Fadahunsi, Olayinka Olamide.
  • Olajide Folorunsho fasanya
  • Gbadamosi, G. Ayobami
  • Tope-Ibitayo,  Oyindamola
  • Isaac, Samson Ahwuyen
  • Isimi, Kehinde C.
  • Ndubuisi N. U. Metu
  • Moses Mosokelu
  • Musa Halliru, Hadiza
  • Emmanuel A. Obaya
  • Odang, Mary O.
  • Oluwaseun O. Odeneye
  • Ogbodo,  James E.
  • Olufunke O. Ogunbiyi
  • Isaac  O. Oladipupo
  • Oloyede Kolawole
  • Olusegun A. Olu-Fredrick
  • Owoeye, Emmanuel B. 
  • Okoronkwo, Godwin
  • Shitu, Bilikisu O.

  • Isaac O. Oladipupo
  • Samuel A. Adesina
  • G.I. Omede                                                     Administration Manager
  • Isaiah O. Ayoola
  • Rasheed Sanusi                                                                       Assistant Accounting Officer 
  • Olusegun Francis Usman
    Data/Utility Officer
  • D.O. Ukah
    Confidential Secretary
  • Lanre Adebayo
    Admin Assistant
  • Chika Eleanya
  • Dorcas Ojelabi                                                                 Nkechinyere Uduma                                                             
  • Front Desk Officer

41  Colorado Close, Minister's Hill, Maitama District, Abuja

T    +234  (09)   291 4027,   672 1934,   780 9317,   413 9470


45  Murtala Muhammed International Airport Road,               Tinuose House,  Ajao Estate,  P.O.Box 1701,  Marina,  Lagos

T    +234  (01)   774 1500,  01 791 6345, 0706 350 0603


Work in Progress