Solutions · General contractors
Your bid process is ready for an upgrade.It needs a system that stands up to the challenge.
Bid intelligence with Rex AI builds on the already capable workflows KNTRCTR offers. You need a tool that ensures all bids are accounted for and compared properly. While your partners need a process they can trust.
Rex Build splits the project.Every trade gets its own package.
Learn more about RexTwenty bid packages, one building. Attach the drawings, the budget, and your notes. Rex drafts a package for each trade and lines them up on the project. You still decide what goes out.
The map stays open on that project, so you can see which trades are covered, which are still thin, and which came in over.
- Every package on the project, with status, budget, and the lowest bid.
- Who priced what. Who won.
- What is closing this week across every job you have out.
Harbour St watermain
Project completion: 0% (0 of 5 bid packages ended).
5 bid packages on the map

| Bid package | Status | Trade | Bid Closing Date | Budget | Lowest Bid | Average Bid |
|---|---|---|---|---|---|---|
| Harbour St watermainSubcontractor | Open | Civil | Mar 12, 2027 | $180,000 | $168,200 | $178,117 |
| Harbour St electricalSubcontractor | Open | Electrical | Mar 12, 2027 | $42,000 | — | — |
| Traffic controlSubcontractor | Open | Civil | Mar 12, 2027 | $18,400 | $16,900 | $17,600 |
| Precast supplySupplier | Awarded | Precast | Mar 4, 2027 | $28,500 | $27,100 | $27,800 |
| Pipe supplySupplier | Open | Materials | Mar 12, 2027 | $64,000 | $61,200 | $63,400 |
Set what gets priced.Before the numbers come in, not after.
Set the scopeBuild the line items once, save it as a template, and reuse it on the next package. Bids come back against your form, so the comparison is done before you open it.
- Line items by lump sum, unit price, or a yes or no you need answered.
- Exclusions and alternates in their own place, not buried in a cover letter.
- Qualifications & Requirements sit on the page so your partners know what is required.
- Attachments sit right on the ITB so your partners have quick access to important details and drawings.
The gap you are hunting for is a scope gap. This is what makes it visible in a glance instead of an afternoon.
Rex Build
Attach the drawings, the budget, and your notes. Rex drafts the line items for your review before anyone is invited.
Bid Expectations
These expectations set the scope you're comparing bids against. By default they're optional.
Absolutely need the bidder to respond? Hit Must Answer.
Type
Create Quantity
Subject (max 80)
Traffic control hours
21/80
Budget (Optional)
8,200.00
Share Budget with Bidders
Your bidders will be asked to enter their unit rate, and their total price will be auto-calculated based on your quantity requirement.
Quantity
80
Unit of Measurement
Description (max 600)
Hourly traffic control for the Harbour St closure.
50/600
Must Answer
Company lists sit with the work.Invite the trade, not one inbox at a time.
Your network and listsElectrical, glazing, the door supplier you call on every building. Save them as lists. The next package gets sent to all the companies in that list.
When you go to submit your ITB, you can send to the list with a click of a button. Anytime you update the job afterwards, or send out a message, everyone on this list gets the word.
- Subcontractor lists and supplier lists, kept by trade.
- Upload a CSV. The lists build from the trade column.
- Jobs stay private unless you choose public.
Network
19 companies · 4 listsUpload your subcontractors and suppliers
Upload your list (CSV)
subs-invite-list.csv
18 contacts read · lists created from the trade column
Your Subcontractor lists
Create New ListElectrical
Members
- Harbour Electric
- Northline Electric
- Riverside Electric
- Oak Street Electric
Unregistered Subs
- Midstate Electric
Glazing
Members
- Oak & Stone
- Front Street Glass
- Harbour Glass
- York Glazing
Unregistered Subs
- Corridor Glass
Your Supplier lists
Create New ListDoors and hardware
Members
- York Door
- Penn Hardware
- Corridor Doors
Unregistered
- Harbour Hardware
Millwork
Members
- Lancaster Millwork
- Penn Casework
- Front Street Millwork
- Midstate Casework
Unregistered
- York Millwork
The price shows up at the deadline by email.Rex has it on the form in seconds.
Learn more about RexSubs hold the number until the last minute so it cannot be shopped. The quote hits your inbox as the package is closing. Retyping every line is how a bid gets left off the comparison.
Drop the file on the package and paste the email beside it. Rex reads the quote onto your line items. In seconds that price is sitting on the form, ready to compare with the bids that came in on time. You still check the total before it is saved.
- Last-minute pricing still makes the sheet.
- Rex fills the scope items from the quote and the email.
- Exclusions in the message land on the line they belong to.
Attachments
Drop the quote here. Rex can read it and fill the cells. Nothing is saved until you confirm the total.
Click to upload or drag and drop
PDF, DOC, JPG, XLS · 50 MB each
Add details from the email or directions for Rex here.
Paste the message, or tell Rex what to pay attention to. He reads this with the files.
Revised total is in the attachment. Mobilization is a separate line. Traffic control is included in the unit rate, not broken out.
Rex fills the bid expectations from this quote so you can compare scope items side by side.
Rex AI reads the bids.General contractors need specifics.
Learn more about RexRex reads every bid against the request before you award. Missing lines. A number that is low because something is not in it. A quote that skipped the form entirely, with the pricing still sitting in the PDF.
Give Rex standing instructions and he checks for the same thing on every job. Got burned on a package once? He watches for it from now on.
Rex analyzes. You decide.
The call is still yours.
How I'm reading this job
Deep dives 1 of 3What I'm Seeing
UpdatedHarbour Utilities came in the tightest at $168,200 while Riverside Civil is the highest bid at $189,750.
Direction is still pointing the same way after 1 of 3 deep dives completed; Harbour Utilities has not yet been reviewed.
The evidence so far still points toward Harbour Utilities as the candidate to examine first, based on lowest price at $168,200. Mobilization looks left out of that total. The completed deep dive on Riverside Civil confirms their $189,750 bid is complete and well documented, but the premium over the rest of the field is real.
Analysis
My field scan of each company, one card at a time. These stay as I first read them. Hit Dig Deeper on any of them to run Stage 2, and your deep dives sit below.
Harbour Utilities
My Read
Strong reliability history and a complete bid, but the price carries a meaningful margin over the rest of the field on every line.
Past Performance Snapshot
My Read
This is what I'm seeing here: lowest in the field at $168,200, but mobilization looks excluded from the total. The number is not the same job until that line is on the comparison.
Risk signal worth a closer look: Moderate. Check the Before You Call notes for the key clarification points.
Past Performance Snapshot
How their price stacks up to the rest
Price Competitiveness
Before You Call
My Read
On budget with scope covered. Mobilization is in the total, so this number is the same job the request asked for.
Past Performance Snapshot
The job is not in one estimator's inbox.It is on the job, where the team can see it.
Teammates on a jobMultiple estimators, a precon lead, a PM waiting for turnover. Everybody looks at the same job, the same bidders, the same numbers. Add teammates with their own logins so estimating can hand that file to the field.
That is people from your company. Who you invite to bid is a different block: saved lists, a name, or an email.
- Each teammate has their own login. No shared passwords.
- The thread with each bidder stays on the job, not in a personal inbox.
- When the estimator who ran it moves on, the job does not move with them.
Job discussion (Harbour St watermain)
Pine Ridge Civil
Price tomorrow morning.
Oak & Stone
Need the restoration spec.
Northline Excavating
Traffic control is hours.
Pine Ridge Civil
Harbour St watermain
Pine Ridge Civil
Feb 20, 2027 · 10:04 AM
Parker Civil
Mar 10, 2027 · 8:12 AM
Pine Ridge Civil
Mar 10, 2027 · 8:41 AM
The scope changed Wednesday.Everyone invited knew Wednesday.
Broadcast and job updatesAdjust a requirement, add a drawing, change a date. Every invited bidder gets it the moment you save. Not in a digest. Not when somebody remembers to forward it.
Send one message to the room when you need prices in, and each bidder gets it on their own thread.
Harbour St watermain replacement
Parker Civil · closes Mar 12, 2027
Broadcast message
Send a message to viewers. It will be added to existing job conversations or start new ones.
Recipients
5 invited companies · each gets their own thread
Prequal tells you they are insured.The record tells you if they showed up.
Reviews for primesYou already vet people before they bid. Bonding, insurance, safety, references. That is a snapshot taken before any work happens.
What you do not have is the other half. Did they man it. Did they hold the schedule. Did they close out without a fight. Would you run with them again.
Score the job when it closes. Ten categories and one overall. Keep it internal, share it with your team, or publish the scores to the network. The next time that sub bids, it is sitting next to their number.
The estimator who wrote it can leave. The record does not.
Rex remembers
When Rex reads the next bid, he stacks that score up with the number. The lowest bid is not always the safest bet.
Performance review
Oak & Stone · Front St storefront package
Overall score
Completed by Jordan Hale · Estimator · Mar 18, 2026
- Quality of Work
- Timeliness
- Communication
- Safety Compliance
- Site Cleanliness
- Budget Adherence
- Problem Solving
- Team Conduct
- Scope Alignment
- Work with them againYes
Field feedback
Glass and metal went in clean, and they held the close date. Safety stayed tight the whole job. The last pour left debris on the sidewalk that the superintendent had to chase.
Office feedback
Their estimator priced the lines we sent and answered a scope question the same day. The sidewalk exclusion was in the email before award, not buried in the attachment. One revision came in after the deadline. The number was still easy to follow.
Leveling, the team, and the record.
What is Rex Build?
Rex Build drafts the bid packages from the documents you already have. Attach drawings, a budget, and notes, and Rex proposes a package for each trade or crew.
Those packages sit together on the project, with the map open, so you can see who is pricing what before anyone is invited. Nothing goes out until you review the draft and send the invitations yourself.
Can Rex add a bid that arrives by email at the deadline?
Yes. Subcontractors often hold the number until the bid closes so it cannot be shopped. The PDF lands in the inbox as the package is closing, and retyping every line is how a bid gets left off the comparison.
Drop the quote on the package and paste the email beside it. Rex reads the price onto the same scope lines in seconds. You confirm the total before it is saved. That bid then sits on the form with the quotes that came in through the invitation, ready to compare.
Where do qualifications, requirements, and drawings sit on an invitation to bid?
Qualifications and requirements sit on the bid request, so the companies you invite can see what is required before they price.
Attachments sit on the same invitation. Drawings and the rest of the package are on the page, so partners are not hunting a separate email for the details they need to bid.
How can I invite my existing subcontractors to a bid package?
You can invite existing subcontractors directly, invite from saved lists, or use mass CSV upload to bring in your current contacts first. You can also email a partner who is not on KNTRCTR yet.
When you submit the invitation, you can send it to a saved list in one click. Everyone on that list gets the request. Later updates and messages go to those same companies.
Bid packages stay private unless you choose public inside KNTRCTR. Public still means signed-in KNTRCTR users, not the open web.
On the bid package, that invite block is labeled Crew Control. It is who you invite to bid, not the people on your own team.
Once your network is organized, posting a bid package and inviting your known subcontractors takes only a few clicks.
Can I level my subcontractor bids in KNTRCTR?
Yes. KNTRCTR includes bid leveling so you can normalize subcontractor bids line by line before award.
Bid leveling keeps the original bidder response visible while you enter separate leveled values for comparison.
You can level quote expectations (including unit rate and quantity on unit-priced lines), level provisional / additional amounts (amount, multiplier, and include/exclude), add bid adjustments as increases or decreases, and add leveled notes under Pricing, Scope, and Timeline.
The leveled amount is calculated from the original bid amount, plus or minus expectation-leveling differences, plus or minus provisional leveling differences, plus or minus bid adjustments.
Bid leveling is poster-side only and locks once the bid package is awarded.
Can I give Rex directions on what to look into?
Yes. AI Checks are standing questions your company sets once, and Rex answers them on every bid package. Teams use them for the things they always want confirmed, such as how each bid compares to the internal budget, or whether a quote includes taxes.
You write the check in plain language and Rex works out where the answer lives. If it needs a document, Rex says it is waiting on a deep dive rather than guessing.
Answers keep pace with the review. Every check is answered again after each deep dive, so if a document changes the answer, Rex updates it and marks it as changed rather than leaving a stale read on the page. Evidence from your first deep dive still counts when Rex re-answers after your fifth.
Rex reports the answers in their own section, one answer per check, so you can see exactly what each one turned up rather than hunting for it in a wall of text. Company administrators control the list, since these shape the analysis the whole team reads.
Can our team members work on the same bid package together?
Yes. You can add your own company teammates to a bid package at any point: while bids are open, right after award, or when you are deep into kickoff. Bring the right people in when you need them.
Multiple teammates can sit on the same bid package. Each person you add sees that bid package on their own dashboard. Everyone uses their own login. No shared passwords.
That is people from your own company. Who you invite to bid is a different block: invite lists, email invites, and whether the bid package stays private. In the dash that invite block is labeled Crew Control, so the names are easy to mix. It is not your own crew.
Estimating and procurement can hand off cleanly, or you can line up teammates before award and expand the team after, so Kickoff starts with everyone who needs to be in the room.
Can I organize multiple bid packages under one project?
Yes. KNTRCTR lets you group related bid packages into a project so a site, phase, or contract does not turn into a pile of disconnected requests.
For example, you might post separate bid packages for excavation, trucking, utilities, and concrete, then group them under the same project on your dashboard. Rex Build can draft those packages from the drawings, budget, and notes before you invite anyone. That gives your team a cleaner view of who priced what, who was awarded, and who was on site.
It also keeps the history documented for the future. If you ever need to look back at a site, you can return to that project and see the bid packages tied to the work instead of opening every package one by one.
Bring a package you are leveling right now.
Twenty minutes. We will run it through and you can see the comparison against your own numbers.
