Runs alongside
KNTRCTR is a subcontractor bid and performance platform for heavy civil and general contractors. HeavyBid is where you build your estimate. KNTRCTR is where you build your partner decisions, and it can run right alongside the estimating stack you already trust.
HeavyBid is estimating software, and it’s good at it. Forty years good. It’s where your estimators build the number that goes up the chain to the owner or the DOT, pay items, crews, production rates, historical cost data, all of it structured so your bid is accurate and you’re not leaving money on the table. It’s a serious tool run by serious people.
None of what follows is a knock on that.
Here’s the part worth being honest about. HeavyBid’s quote management lives on the estimator’s side of the desk. Your subs aren’t logging in and bidding to you through it. They’re doing what they’ve always done, emailing you a number, sending a PDF, calling it in. HeavyBid gives your estimator a clean place to organize those quotes into folders, compare them against your self-perform costs, and drop the winner into the estimate.
So when you say you already compare bids, this is what you mean: your subs send their price the old way, and you get it into your estimate. That works. HeavyBid does it well.
What that quote can’t carry is everything about the sub except the number.
That’s the gap KNTRCTR fills, and it sits before and after the estimate, not on top of it.
Your subs can 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. For the old-school sub who still just emails it, 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, the price and the exclusions, same as the bids that came in through the form. You look it over and confirm the total before it’s saved. Nobody gets left out of the comparison just because they still bid off a fax.
The number still flows into your estimate. You keep doing that in HeavyBid. KNTRCTR handles the decision around the number.
Four decades as the standard in heavy civil estimating doesn’t happen by accident. If your estimators know HeavyBid, keep them in it. This isn’t a switch.
The estimate tells you what the job costs. It doesn’t tell you who to trust to run it. That’s a different question, and it’s the one KNTRCTR was built to answer, the whole loop, tied together:
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 the 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.
Side-by-side comparison, price, leveled price, expectation responses, and 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.
A fast scan across every bid, then a read of every attachment lined up against each other, so the exclusion one sub buried and another didn’t jumps out. Rex AI surfaces what’s in each bid. You still make the call.
Every job in its lifecycle, from open to awarded to complete. And a teammate only sees a job if they’re on it, your people stay on a need-to-know basis, 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 building by hand 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.
That review record is the piece nothing in your estimating stack does. HeavyBid remembers what they quoted. KNTRCTR remembers how they showed up.
Keep estimating in HeavyBid. Add the part it was never built to cover: the decision 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. HeavyBid is where you build your estimate. KNTRCTR is where you build your partner decisions.
Forty years as the standard in heavy civil estimating does not happen by accident. If your estimators know HeavyBid, keep them in it. This is not a switch.
HeavyBid quote management lives on the estimator side of the desk. Your subs are not logging in and bidding to you through it. They email a number or send a PDF. With KNTRCTR they can bid on a structured form. If they still just email it, drop the PDF on the package and paste the email beside it. Rex AI reads both and fills your scope lines, the price and the exclusions. You confirm the total before it is saved. The number still flows into your estimate. You keep doing that in HeavyBid.
HeavyBid remembers what they quoted. KNTRCTR remembers how they showed up.
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.