Consulting Engineers - Mechanical Electrical Plumbing

Darr & Collins, LLC Consulting Engineers is the regional leader in design of mechanical, plumbing, and electrical systems for buildings, central plants and with a focus on design-build projects, we have the experience and construction knowledge to provide timely delivery to cost-conscious and time-conscious projects.

Darr & Collins, LLC Consulting Engineers serves the healthcare, education, corporate office, government, correctional, and industrial markets. Our services include traditional MEP systems design, infrastructure assessments, master plans, medical equipment planning, sustainable/green design, LEED certification, specialty lighting, and MEP systems analysis. Our awards for innovation and sustainable design exemplify our leadership role in the industry.

Since our founding in 1995, we have progressively grown and expanded our business base thru “repeat business”. Our intent is for complete client satisfaction, resulting in built-in “repeat business”.

Darr & Collins, LLC Consulting Engineers is currently licensed to practice in 20 states. We are known in the industry for our staff continuity and ability to solve complex, engineering-intensive projects, as well as provide effective value-engineering solutions.

Darr & Collins, LLC Consulting Engineers is a full service mechanical, plumbing, and electrical engineering firm located in Oklahoma City, Oklahoma. D&C has a staff of fourteen (14) people – properly sized to produce intensive and timely results on the small projects, as well as provide dedicated staff on the large projects.

Darr & Collins, LLC Consulting Engineers provides traditional mechanical and electrical engineering services including project design, cost estimating, and construction observation.

Firm History
Darr & Collins, LLC Consulting Engineers was formed in March 1995. The original staff of four (4) people has developed into the present day 14 person firm. The firm project performance list has grown in a steady and consistent fashion throughout its entire history. Darr & Collins, LLC Consulting Engineers attributes this growth to its emphasis on progressive design and its growing reputation for strong customer service.