Suppose the plumbing sheet puts a drain six inches from where the floor framing plan shows the opening. Both drawings look reasonable until somebody puts them side by side. If that somebody is the plumber working on the first module, how many floors has the framing crew already built?

That’s the offsite angle on Buildcheck’s September announcement. The company raised $12 million in a Series A round led by Telescope Partners, bringing its total funding to about $18 million. Among the investors was WND Ventures, DPR Construction’s venture arm. DPR has piloted the software, giving it a contractor’s view of what the technology can do.

Buildcheck uses computer vision to read drawings across trades and flag missing information, errors, and details that disagree from one sheet to the next. The company reported more than 110 paying customers and over 150,000 sheets analyzed. DPR says the pilot helped its reviewers spend more time working through the issues that needed their judgment.

Anybody who has compared two sets of drawings knows what happens when somebody shifts the whole plan slightly on the page. The overlay lights up, and you still have to hunt for the one opening that moved. Buildcheck says Diffs can pick out meaningful revisions and describe them in plain English. A production manager could then check which floors are still on paper, which are on the framing table, and which are already sitting under finished bathrooms.

Another feature, Custom Checks, lets a company use its own quality manuals and internal standards to review each drawing revision. That could give a factory a way to apply a lesson from its last warranty call to the next job. Buildcheck is also testing code-review and value-engineering tools with customers in the U.S. and Canada.

Gary’s Observation

If I were sitting through that sales demonstration, I’d bring two drawing sets from a job we finished last year. I’d pick one where a missed revision cost us a day on the floor. Then I’d let the software find it. What I’d want to hear from my production manager is, “If you’d handed me that report on Tuesday, we could have fixed it before the second floor went together.”