Runs alongside
KNTRCTR is a subcontractor bid and performance platform for heavy civil and general contractors. B2W is where you sharpen your estimate. KNTRCTR is where you sharpen your call on who’s hitting the job site, and it can run right alongside the estimating stack you already trust.
B2W is estimating software for heavy civil, and it’s built for that world, earthwork, paving, utilities, the trades where the cost database has to be dead accurate. Its real pull is the unified database, every estimator working off the same labor and equipment rates, so your numbers are consistent across the whole team. For firms already committed to the B2W platform, that consistency is the whole point.
None of what follows is a knock on that.
B2W is where your estimators build the number that goes up the chain to the owner. Sub and vendor quotes feed into that estimate, but they get there the old way, emailed in, PDF’d over, called in, then worked into your pricing. There’s no portal where your subs are bidding to you in a structured way, and there’s nothing reading those quotes for what’s buried in them. B2W’s job is to make your estimate sharp, not to run the project.
So when a sub quote comes in, it’s an input to your number. What that quote can’t carry is everything about the sub except the price.
That’s the gap KNTRCTR fills, and it sits around the estimate, not on top of it.
Your subs bid to you through KNTRCTR in a structured form, against the scope and expectations you set, with their exclusions, their extra costs, and their documents attached. When one of them emails the quote instead, drop the PDF on the package and paste the email beside it. Rex AI reads the file and the message and fills those scope lines. You confirm the total before it’s saved. That price is then in the comparison with the others, even if the sub never logged in.
The number still flows into your estimate. You keep sharpening that in B2W. KNTRCTR handles the call around the number, who’s actually hitting the job site.
A unified cost database that keeps a whole estimating team consistent is hard to build and harder to replace. If your estimators run B2W, keep them in it. This isn’t a switch.
A real bid form with structured responses to your scope and expectations, unit pricing, exclusions with a reason, and more. No decoding six different Excel formats to figure out who left what out.
Some subs won’t fill out a form. They email a PDF, and sometimes the price or the exclusions are written in the message. Drop that file on the package and paste the email next to it. Rex AI reads both and fills your scope lines, the same ones the other bidders fill in. You check the total before it’s saved. Then that bid sits with the rest of them.
When the work’s done, the reviews kick in. Quality, timeliness, safety, cleanliness, budget, whether you’d run with them again. Locked once it’s in. Keep it private to you, share it with the sub, or put it out to your peers in the network. That review feeds the next bid, so next time this sub’s number comes across your desk, you know how the last job actually went. Not from your PM’s memory. From the record.
Anyone can read the number. What’s hard is reading all the bids at once and catching what the low guy quietly left out, the exclusion that turns into a change order. Rex AI scans the whole field in under ninety seconds, then reads every attachment and lines them up against each other, so the exclusion one sub buried and another didn’t jumps out. It surfaces what’s in each bid. You still make the call.
Side by side, price against leveled price against past performance, all on one screen. Level the bids without losing the original number. See who’s really low and who just forgot half the scope.
Every job in its lifecycle, from open to awarded to complete. A teammate only sees a job if they’re on it. Need-to-know, no clutter, no digging.
Group related jobs under a project and get the aggregate, budgets, low bids, award amounts, self-perform scopes, status across every package. The view you’ve been keeping in a spreadsheet, built in.
One click and every bidder knows, winner and the rest. Then Job Kickoff opens: a shared checklist, contacts, notes, and a place to line up the insurance and contracts before anyone mobilizes. Compliance handled at award, when it actually matters, before the iron rolls.
B2W remembers what they quoted. KNTRCTR remembers how they showed up.
Keep estimating in B2W. Add the part it was never built to cover, the call on who gets on your site, and the record of how they did once they got there.
There's a lot of software in construction, and most of it is good at something. The question isn't which tool is best. It's which tool does the job you're trying to do.
KNTRCTR runs the subcontractor decision end to end. Who bids, what is really in those bids, who gets the award, and how they performed once they were on site.
Some tools live next to that lane. Some overlap with a piece of it. Bid platforms stop at award, estimating tools stop at your number, and project management platforms start after the work is already won.
What none of them do: read the bids the way Rex AI does, catching what is buried in the attachments before you make the call, take an emailed quote and put it on your scope lines, and carry a locked record of how each sub actually performed back into your next decision.
A lot of subs still email a PDF, sometimes with the price or the exclusions written in the message. These tools can store that file, or line up what someone typed into a form. They do not read the email and the PDF and fill your scope lines. In KNTRCTR you drop the file on the package and paste the email beside it. Rex AI fills those lines. You confirm the total before it is saved. Then that bid sits with the ones that came in on the form.
No. B2W sharpens the number you send up. KNTRCTR sharpens the call on who is hitting the site.
A unified cost database that keeps a whole estimating team consistent is hard to build and harder to replace. If your estimators run B2W, keep them in it.
Sub and vendor quotes feed into that estimate the old way, emailed in or sent as a PDF, then worked into your pricing. KNTRCTR sits around the estimate. Your subs bid against your scope. When the quote arrives by email, drop the file on the package and paste the message beside it. Rex AI fills the scope lines. You confirm the total before it is saved. Leveling, award, kickoff, and the review record come after. You keep sharpening the estimate in B2W.
No. KNTRCTR focuses on bid organization and subcontractor performance tracking—not estimating takeoffs, project scheduling, or cost control.
It works alongside your existing estimating tools and project management systems.
Twenty minutes, no slide deck. We will run a project end to end so you can see where KNTRCTR picks up what your current stack leaves on the table.