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Leading AI Construction Bidding Software for Commercial Construction
Streamline every step of the construction bidding process—whether you're sending ITBs or managing invites—with tools that deliver better results.
Trusted Alternative to
BuildingConnected
iSqFt
PlanHub
SmartBid
FOR GENERAL CONTRACTORS
Build bid packages & send ITBs in minutes.
Upload your plans - AI creates clean scopes, writes notes, and preps everything for invites.

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FOR SUBCONTRACTORS
Stop losing bids to your inbox
See every invite, deadline, and RFI on one board—reply before the competition even opens theirs.
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Trusted by Leading Contractors



























Rebuilding How GCs and Subs Connect
Back then, GCs and subs walked the site together. Questions got answered on the spot. Everyone left knowing they were pricing the same work
Then bidding moved online. Suddenly it's 50 portals, 200 emails, and nobody's sure if they're looking at the right drawings. GCs blast the same generic invite to everyone. Subs wonder if it's even a real job. The whole thing feels like spam.
We built Downtobid to bring back what worked—just digitally.
Real relationships, clear communication, everyone on the same page. When GCs can send clean scopes from their own email and subs can track everything in one place, that trust comes back. Bids get tighter. Projects start smoother.
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FOR GENERAL CONTRACTORS
From Plans to Invites in Minutes
Upload your plans—AI creates clean scopes, writes notes, and sends personalized invites from your email. No more chasing, no more plug numbers.
AI Detects packages
Our AI reads every sheet, identifies trade packages, and drafts scope notes automatically
Send personalized ITBs
Each sub gets their specific scope with clear notes. No more generic blasts.
Track coverage in real-time
See who's opened, who's bidding, who needs a nudge.
FOR SUBCONTRACTORS
Built for How Subs Actually Work
See every invite, deadline, and RFI on one board—reply before the competition even opens theirs.
Get on more bid lists
Find and connect with commercial GCs who need your trade.
Never miss another deadline
Every due date in one calendar view. No more "sorry, just saw this."
Stop double-bidding
See who on your team is working what. Assign estimators, track progress, prevent overlap.

Compare and see why teams switch to Downtobid
vs BuildingConnected vs Smartbid vs ConstructConnect vs PlanHub vs Pantera Tools vs Procore vs BidMail
What our customers say about Downtobid
"The AI package detection is scary accurate. What used to take my team half a day now takes 2 minutes. Plus, subs actually respond because invites come from our email."

Robyn Lynn
MRI Builders
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GH Pastor Saves 15+ Hours Per Week
See how GH Pastor streamlined their bid process and improved coverage using Downtobid.
Time to packages
15 min vs 2+ hours
Active projects
24 running
Bids per package
3.8 vs 1.9
Frequently asked questions
How does AI package detection work?
Upload your PDF plan set. Our AI reads every sheet, identifies trade scopes, and drafts initial scope notes. You review and edit before sending—nothing goes out without approval.
How is Downtobid better than other ITB platforms?
Downtobid offers AI-powered bid package creation (15 minutes vs manual sorting), personalized ITBs from your domain (vs portal emails), and transparent per-user pricing (vs revenue percentage). Many GCs switch for the time savings alone.
How much does construction bid management software cost?
Downtobid starts at $149/month for your organization and is meant to be cost effective for GCs. For subcontractors the basic "leads" bid board starts at $119/mo and the full bid management software starts at $299/mo.
Can I import my existing sub list?
Yes. Upload via CSV and we'll match to our database, fill missing info, and flag duplicates. Your relationships stay intact.
How do I switch from my current construction bid management software to Downtobid?
We offer sub list imports from your platform (or spreadsheet) directly into Downtobid. In Downtobid, we verify contacts, update info, and flag duplicates. Most teams complete migration in under an hour.
What makes ITBs "personalized"?
Each invite includes the sub's specific scope summary, relevant sheets, and your company branding. It looks like it came from you, because it did—unlike portal emails from competitors.
Do subcontractors pay to use Downtobid?
No. Subs access planrooms and submit bids free. They can upgrade to Bid Board for advanced features like bid tracking and deadline management.
Ready to transform your bidding process?
Join thousands of contractors who trust Downtobid to simplify their workflow.

Downtobid
The leading bid management software for commercial construction. Top GCs and subs use Downtobid to connect, send invites, and manage bids in one place. Get verified partners and faster responses on every project.
DOWNTOBID
GENERAL CONTRACTORS
ITB Tool Subcontractor Network
TRADE CONTRACTORS
COMPARE ITB TOOLS
BuildingConnected SmartBid iSQFT PlanHub BidMail PanteraTools Procore
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