Doing It Right the First Time

TCC & Associates Inc. is the inevitable result of a tested collaboration between engineers, an architect and a contractor. After years of informal collaboration and tested relationship in coordinating design, construction and project management, seasoned engineers Edmund Tawiah, PE and Bill Chin teamed up with former contractor and project management consultant, John Carson to form TCC & Associates Inc. in 2005. The company provides civil engineering design services to the developers, contractors and municipalities.

TCC & Associates, Inc. performs civil engineering, surveying, land development planning and construction management for residential and commercial developers, as well as public agencies throughout Oregon and Washington. Our professional staff is dedicated to delivering civil engineering services on schedule and within budget. Relying on our thorough knowledge of municipal and agency requirements, we are able to scope cost-effective and timely solutions that add value to the most challenging projects.

TCC & Associates is minority-owned and certified as a DBE, MBE and ESB by the State of Oregon with a registration number 5373 and State of Washington D3M9320608. The company has formed successful DBE sub-consultant partnerships with prime engineering firms on major public works projects.


TCC and Associates Portland Oregon

Civil Engineering

TCC’s civil site design encompasses all horizontally engineered and infra structures of the urban setting in the context of residential, commercial and industrial projects.

TCC and Associates Portland Oregon

Construction Mgt.

Construction bid management and protocol; including cost estimating, inspection and specification compliance.

TCC & Associates Portland Oregon


TCC provides topographic surveying, Land Partition and Boundary survey as well as ALTA survey services.

TCC & Associates Inc. Portland, Oregon


TCC provides jurisdictional planning activities related to subdivision, land partition and site development for residential, commercial and industrial projects.

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Learn about some of the recent projects we’ve worked on.