Civil Engineering for Colorado’s Future

Colorado’s best builders trust TJCivil to provide the critical services that keep their projects moving forward.

Over 20 years of top-quality results

TJC was founded in 1997 by Tim Masters, and with the addition of Jim Allen as a partner in 2017, we have over 50 years combined experience. You can count on us to get the job done right.

What can we help you build?

We offer innovative, efficient, and cost effective civil engineering so our clients can trust they’re getting the best results at the best price.

Civil Engineering Design

Entitlement, Zoning, and Permitting

Due Diligence and Feasibility

Project Management

Construction Administration

Cost Estimates, Pro Formas, and Scheduling

More About Our Services

We’re here to support you

Our breadth of services and depth of experience can provide you with all the tools you need to keep your projects moving forward. And because we aim to cultivate long term relationships with our clients, you can count on us to understand your requirements and quickly turn around the results you’re looking for. We want to be your partner, ready to deliver a great product at a great price, whenever you call on us.

TJC was founded in 1997 by Tim Masters as Oscar+Associates, a civil engineering firm specializing in land development, civil/site, and water resources engineering. In honor of our first 20 years, Jim Allen became a partner in the firm. Progress and growth requires a new moniker so keeping things simple, we renamed the company. Candidly, we’re not much into complicating things and Tim-Jim-Civil just didn’t sound right, so TJC became our new name.

Some Recent Projects

More Recent Projects


Tim Masters, PE

Partner + Principal

Tim is Principal at TJC with over 30 years of experience in civil/site engineering ranging in a host of various projects from residential to commercial to industrial to municipal. Tim ensures that TJC designs are efficient, practical, and sustainable. Tim’s expertise is smoothly managing the bureaucratic maze of the entitlement process. He also oversees drainage and grading on every project.

Jim Allen, PE

Project Manager

Jim is a Senior Project Manager at TJC with over 20 years of experience in civil/site engineering. Jim manages the nuts and bolts of the engineering design process ensuring that the schedule is met, and agency approvals are obtained so the development can move forward to completion.

Want to nail your next project?

Contact TJCivil to ensure your next project is built on a solid foundation. With decades of experience and a wide breadth of services, we’d love to be your civil engineering partner.

Contact Us Today