How it works

How KNTRCTR works.Organize the chaos. Keep the record.

KNTRCTR is subcontractor management software for heavy civil and general contractors.

Prime contractors post bid requests, invite the subcontractors they already work with, compare and level the bids that come back, award the work, and record how the job went.

Rex AI reads the field before you award, and that review sits beside the same company's number the next time they bid.

Subcontractors bid invited jobs free.

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See it from your side of the job.

I'm a prime contractorI'm a subcontractor

The whole process

One job.Harbour St, start to finish.

Follow Parker Civil and Northline Excavating through the same watermain. Prime sits on the left. Subs sit on the right.

Prime

Sub

  1. The job goes out

    Bid request

    Dates

    Due Mar 12, 2027 · Work Apr 12 to May 21, 2027

    Scope

    Open cut watermain replacement on Harbour St, including restoration and traffic control.

    Bid expectations

    Quote · Mobilization

    Scope · Open cut and restoration

    Rex AI checks these later.

    Prime · Post

    Write the job once. Dates, scope, and bid expectations in one request.

    Parker Civil posts Harbour St with the dates, the scope, the requirements, and the attachments. The chaos of a scattered email thread stops here.

    Bid expectations are the questions every bidder has to answer the same way, grouped under quote, timeline, or scope. Optional by default. Rex AI comes in later to check those answers, and to fill any the sub left blank from the quote they attached.

    How to compare bids side by side

  2. Invite list

    • Northline Excavating
    • Harbour Utilities
    • Riverside Civil
    • Pine Ridge CivilSent

    Prime · Invite

    Send it to the crews you already trust. Invited bids are free.

    Pull a saved list and send the whole crew in one click, or invite one company at a time. Off-platform companies can be invited by email. Northline Excavating, Harbour Utilities, Riverside Civil, Pine Ridge Civil, and Oak & Stone all get the same job.

  3. Harbour St watermain

    Posted by Parker Civil

    Submit Bid
    Private inviteFree to bid

    Bid closing

    Mar 12, 2027

    Sub · Opens

    The invite lands with the job already built. No subscription to bid.

    Northline opens Harbour St from the inbox: dates, scope, expectations, and every attachment already there. No seat and no card to bid an invited job.

  4. The bids get made

    Submit bid

    Quote

    $176,400

    Northline Excavating

    Northline-Harbour-St-quote.pdf

    Draft saved. Submit when the number is ready.

    Sub · Bid

    They bid on the same request. Save a draft. Submit when the number is ready.

    Pricing, scope, and timeline sit in one form. They attach a quote and a schedule. One click shares whether they plan to bid, need more information, or are out. Questions stay on the job, so every bidder is working from the same answer.

  5. RexAIOptional

    Against the original scope

    Traffic control is in the quote. Mobilization is not spelled out on the form.

    Subscription optional. The send stays with Northline.

    Sub · Rex AI

    Subscription optional

    Rex AI checks the draft. A leg up if they choose.

    Invited bidding stays free. Rex AI is optional for the bidder. Subscribe and it can fill the form from the quote and check the draft before it hits the comparison. A leg up, not a requirement.

    It also reads the bid against the original scope, so gaps and mismatches get caught while there is still time to fix them. Analysis only. The send stays with the bidder.

    Rex AI for subcontractors

  6. The comparison happens

    Bids (3)

    Avg $178,117
    • Harbour Utilities$168,200
    • Northline Excavating$176,400
    • Riverside Civil$189,750

    Originals stay visible after leveling.

    Prime · Compare

    The bids come back ready to compare. Level without hiding the original.

    Harbour Utilities comes in at $168,200. Northline at $176,400. Riverside Civil at $189,750. Level line items and add adjustments without hiding what the sub originally submitted. Past performance sits on the same card as the number. A quote that arrived by phone can be entered as a manual bid.

  7. RexAIStage 1

    What I am seeing

    Harbour Utilities is the low number. Mobilization looks excluded. Northline covers the scope.

    Filled Mobilization from the quote PDF.

    Talk to Rex AI

    Prime · Rex AI

    Rex AI reads the whole field. Price, scope, attachments, and the reviews already on file.

    Rex AI scans the field in one pass: price spread, completeness, scope coverage, attachments, and the reviews already on file. What I'm Seeing sits on the job and updates as bids come in. Ask Rex AI in the chat if you want to go deeper. Analysis only. The award stays yours.

    If a sub attached a quote but left bid expectations blank, Rex AI can fill those answers from the document so the comparison still has a complete row.

    Rex AI for primes

  8. The award is made

    Award

    Awarded to

    Northline Excavating

    $176,400

    • Insurance certificate on file
    • Contract uploaded
    • Site contacts shared

    Prime · Award

    You award. Kickoff opens. Winner and non-winners are notified at the same time.

    Parker Civil awards Harbour St to Northline Excavating. Kickoff is the handoff after that: contacts, contracts, insurance, notes, and a shared checklist both companies work from.

  9. You were awarded

    Harbour St watermain

    Parker Civil · $176,400

    Harbour Utilities and Riverside Civil were notified at the same time.

    Sub · Notified

    The result lands on the same job. Awarded, or not, with the record attached.

    Northline sees the award on Harbour St. Harbour Utilities and Riverside Civil are notified at the same time. The number they submitted stays on the job.

  10. The review is completed

    Performance review

    Northline Excavating · Harbour St watermain

    4.6

    Quality of Work

    Timeliness

    Communication

    Safety Compliance

    Double-blind until both sides are in.

    Prime · Review

    The review you write today sits next to their number the next time they bid.

    Record how the job went across ten categories. Keep it internal, share it with the sub, or publish the scores to the network. Written comments are never published with public scores. When the estimator who wrote it moves on, the record does not go with them.

    How reviews work

  11. Performance review

    Northline Excavating · Harbour St watermain

    4.6

    Quality of Work

    Timeliness

    Communication

    Safety Compliance

    Double-blind until both sides are in.

    Sub · Review

    You review the prime. They review you. Neither side sees it until both are in.

    Northline writes the other half of the Harbour St record. Double-blind: neither review is visible until both have been submitted. The next time this company appears on a bid, that score sits beside the number, and Rex AI reads it as part of the field scan.

The terms on this page

Plain definitions for the words that show up in the product.

Bid request.
The job a prime contractor posts. Dates, scope, requirements, expectations, and attachments in one place.
Bid expectation.
A specific thing the prime wants answered the same way by every bidder, grouped under quote, timeline or scope. Optional by default. Subcontractors can attach a quote instead. Rex AI can fill the answer from that document on the draft, or later on the comparison if the sub left it blank.
Bid leveling.
Adjusting bids to a common basis so they can be compared fairly, usually because bidders included or excluded different items. On KNTRCTR the leveled figure sits next to the original, and the original is never hidden.
Bid adjustment.
A specific add or deduct applied to one bid during leveling, with the reason recorded.
Exclusion.
A line a subcontractor formally does not carry, submitted with a reason so the bid stays complete rather than looking incomplete.
Manual bid.
A quote that arrived by phone or email, entered by the prime on the sub's behalf so it sits in the same comparison as everything else.
Share status.
A one-click signal from a bidder: planning to bid, needs more information, or cannot bid.
Job kickoff.
The handoff after award. Contacts, contracts, insurance, notes and a shared checklist that both companies work from.
Your Reviews.
Reviews your company wrote. They sit on your bids even when you keep them internal. They do not feed Market Reviews unless you make the review public.
Market Reviews.
Published review scores on the KNTRCTR network. Other primes can see this average at bid time. Written comments are not published with the public scores.
Locked review.
A performance review that can no longer be edited once both sides have submitted, or once 90 days pass from the review request. After lock, both companies have to agree for KNTRCTR support to unlock it.
Double-blind review.
Neither the prime nor the sub sees the other's review until both have been submitted.
Invited job.
A job a company was sent directly. Bidding on it is free.
Public job.
A job posted to the KNTRCTR network rather than to a named list. Bidding on public jobs requires a subscription.

FAQ

How the job runs.

What is KNTRCTR and how does it work?

It's the system of record for the subs you work with, and the way you get jobs out to them.

Send bid invites in a few clicks. Subs see the job, submit pricing, and you compare apples to apples in one view.

When you award, the job kickoff is there to organize the crew for the site. Every interaction builds a track record on the company that earned it.

Bid invites go out in minutes, not hours. Award decisions get made on data, not memory. The next time you're picking subs, you've got real history to pull from.

Reading this FAQ is helpful, but you should step on to our job site with a demo (below). Easier to show you than tell you.

Is this a public bid board?

No. Jobs are private by default. You control who gets invited.

This platform is about structured relationships, not blasting work into the open web.

Once you are in the system, in addition to inviting your existing subs (optional), you have the option to post a job as "Public." This only means it is public within the system and other KNTRCTR users can see the job. It is not posted on the open web.

Private vs public jobs

What happens after a job is awarded?

All bidders are notified by email about the decision. The awarded company knows they won, and everyone else knows the job is decided.

The job stays in one workspace on KNTRCTR: scope and attachments, bids, and the job discussion thread.

After award, Job Kickoff is a dedicated space for start-of-work handoff.

The job moves through clear stages (for example awarded, in progress, completed).

When the work wraps, peer reviews and performance history stay tied to that job and that company, so your next award isn't based on memory alone.

No more relying on scattered updates when you award the next sewer, grading, or utilities contract.

How is this different from using email?

Email does not track who viewed your request. Email does not standardize bid expectations. Email does not preserve performance history.

Job Discussion and Job Kickoff keep conversation and handoff on the job—so fewer lost attachments and fewer "which thread was that?" moments.

KNTRCTR turns scattered communication into a structured and searchable record.

More questions

One job.From the invite to the record.

Posting, bidding, Rex AI, award, and the review all stay attached to the work they came from. That is the workflow. That is KNTRCTR.

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