Module 01
Construction plan review software
PBG Precon reads an entire drawing and specification set the way an experienced preconstruction manager does — looking for conflicts, omissions and coordination problems — and reports every finding with the sheet and the verbatim note it came from.
What plan review actually solves
Most cost overruns on a custom home or commercial fit-out are not estimating errors. They are drawing problems that nobody caught: a finish schedule that lists a material the plans never detail, a beam that lands where the architectural plan shows a window, a ceiling height that cannot happen once the mechanical chase is built, a door schedule that disagrees with the floor plan.
Those conflicts are found today by one or two people who have done it long enough to know where to look. That knowledge is slow to apply across a 90-sheet set and impossible to apply consistently across every project in a pipeline. PBG Precon encodes that review discipline and runs it against the whole set in minutes.
What the review checks
Drawing-to-schedule agreement
Door, window, finish, plumbing fixture, lighting and equipment schedules are cross-checked against what the plans and elevations actually show.
Discipline coordination
Architectural, structural, mechanical, electrical and plumbing sheets are compared for conflicts in framing, chases, ceiling heights, headers and clearances.
Missing information
Details called out but never drawn, materials specified without a location, assemblies referenced without a section, and sheets referenced but absent from the set.
Constructability
Conditions that are drawable but not buildable — insufficient framing depth, unsupported spans, trim conditions that cannot be executed, access that does not exist.
Scope-affecting ambiguity
Notes such as "by owner", "as selected", "match existing" and allowance language that will turn into a change order if nobody resolves it before bidding.
Every finding is traceable
A finding you cannot verify is worse than no finding. Every item PBG Precon reports carries the sheet number, the sheet title and the verbatim text it was drawn from, and the quote is checked character-for-character against the source document before it is shown to you. Click the citation and the viewer jumps to that sheet and highlights the evidence.
That is what makes the output usable in a real preconstruction meeting: you are not asking a team to trust a model, you are handing them a page number.
The checklist behind the review
Behind the review is a rule library — the institutional checklist that a senior preconstruction manager carries in their head. Millwork and trim conditions, envelope and flashing details, structural-to-architectural coordination, schedule completeness, and the specific things that have gone wrong on past projects.
Rules are visible, and findings are linked back to the rule that produced them, so the review is auditable and the checklist can grow with your company's experience rather than living in one person's memory.
From findings to an RFI log
Findings are severity-ranked, grouped by discipline, and exportable as an RFI log so the questions go to the architect in one organized package instead of trickling out during construction. That is the difference between a two-week clarification cycle before bidding and a change order after framing.
Frequently asked
- Does it replace a human reviewer?
- No. It does the exhaustive first pass across every sheet so the experienced reviewer spends their time judging findings instead of hunting for them.
- What file types does it read?
- PDF drawing sets, including multi-sheet sets. Sheets are indexed with their number, title and discipline as they are uploaded.
- How is this different from Bluebeam?
- Bluebeam is an excellent markup and measurement tool — it shows you the drawing. PBG Precon reads the drawing set and tells you what is wrong with it. See the workflow page for how the two coexist.
See it on your own drawing set
Create an account, upload a set, and run review, takeoff and scope on a project you are pricing now.