A Division of

J. Knutson & Associates, Inc. www.jknutson.com launched in 1984 as a value‑added reseller of commercial, industrial, and residential construction software. After more than a decade of hands‑on experience working directly with all types of construction companies, we saw a major gap in the market – and Contractors Software Group was born to deliver purpose‑built solutions for residential and light commercial construction companies.

We didn’t just enter the market; we helped shape it.

Our first major breakthrough, The Plus Series, quickly became our most popular fully integrated system—refining and elevating construction workflows for eight years. Building on that success, we introduced The Professional Series, engineered for companies that demand the power, speed, and reliability of a SQL‑based backend.

As we listened to the needs of smaller builders and contractors, The Simple Series emerged—an affordable, streamlined solution for teams ready to move beyond manual processes and disconnected tools like QuickBooks.

When customers asked for hosted solutions, we delivered again with our Cloud Hosted Series, giving construction companies the flexibility to run our software anywhere, anytime, on a predictable monthly plan.

In 2019, we expanded our ecosystem with CSG Central, a centralized web portal that transforms communication by giving clients, employees, and vendors real‑time access to job information. We also launched CSG Central’s Remote Time Card Entry Web App, empowering mobile crews to submit time from the field while automatically syncing with the Professional Series—eliminating re‑entry, processing payroll and tightening job cost accuracy.

Today, Contractors Software Group stands as a recognized leader in construction management technology. Our solutions have earned industry‑wide recognition, including Constructech’s Top Products award for The Simple Series and TechHome Builder’s Innovative Housing Technology Award for The Plus Series four years running.

We are the only construction software provider offering a fully integrated suite that connects sales, marketing, customer service, estimating, purchasing, scheduling, job cost accounting, and a real‑time communication portal—all from one company, all working together.

With hundreds of customers across the U.S. and Canada, our certified channel partners deliver complete sales, implementation, training, and support—making CSG a true one‑stop solution.

As construction and technology continue to evolve, our mission remains the same: innovate, integrate, and empower builders and contractors to run stronger, smarter, and more profitable businesses.