What is a construction bidding platform?
A construction bidding platform is an online network where general contractors and owners post projects, share plans, and send invitations to bid, and where subcontractors find those projects and submit their numbers. Some are called plan rooms or bid boards. Well-known examples include:
- Autodesk BuildingConnected. General contractors send invitations to bid to subs in its network. According to its support documentation, the scopes a sub lists under "Work Performed" and its "Service Area" determine which invitations it receives, and it also offers subs an online plan room.
- PlanHub. It describes itself as an open bidding marketplace. Subs set up a profile with their trades, service area, and project preferences, receive invitations to bid, and can bid on GC-posted projects without an invitation.
- ConstructConnect. Subs search active public and private commercial projects by trade, location, and building type, track invitations to bid in its Bid Center, and can bid on curated projects without an invitation.
How do bidding platforms work for subcontractors?
The project comes first. A general contractor or owner posts it, or sends invitations to bid to subs who match the scope and the area. The sub gets notified, downloads the plans, and submits a number before the bid date. General contractors typically invite several subs per scope so they can compare numbers.
That model is built for managing bids on posted projects. The sub is one of the bidders on a project that already exists on the board.
How is Bidli different?
Bidli is not a bidding platform. It does not post projects or host a bid board. It is an AI sales rep that works for one trade company and goes and gets the work that company wants.
| Bidding platforms and plan rooms | Bidli | |
|---|---|---|
| What it is | An online network where GCs and owners post projects and send invitations to bid | A custom AI sales rep that works for one trade company |
| Where the work comes from | Projects posted for bid on the platform | The work you want in your territory, including work that never gets posted |
| When you show up | When the bid package is out | Before the bid package goes out, while the list is being built |
| Who else is bidding | The other subs invited to the same scope or finding the same posting | Your conversation is yours alone, in your company's name |
| Who does the work | You search, download plans, and respond | Bidli finds the work and the person, opens the conversation, and follows up |
| Kinds of work | Projects posted by general contractors and owners | Commercial, new construction, government, and high-margin residential |
| What lands with you | Invitations and bid packages | Live bid opportunities, ready to price, with the person who awards the work |
How we describe other companies: every statement about them on this page comes from their own published materials (construction.autodesk.com and support.buildingconnected.com, planhub.com, constructconnect.com), as of October 2026.
Why does getting there before the bid package matter?
Because the estimator builds the bid list before the package goes out, and they start with the subs they know. A sub who is already in conversation with the estimator gets invited, gets the plans early, and has time to ask questions and price it right. Bidli gets your company into that conversation first, in your name, and follows up through bid day and buyout.
It also goes after the work no plan room carries: owner-direct commercial work, builders lining up trades for a new phase, and the re-roofs, repaints, HVAC changeouts, and remodels coming due in your territory.
The difference in one line
A bidding platform puts you in the stack. Bidli puts you on the list before the stack exists.
Can you use a bidding platform and Bidli together?
Yes. A platform handles the bids on projects that are already posted. Bidli goes after the work before it is posted and the work that never is. When your number does land on a posted project, the person awarding it already knows your name.
Common questions
Is Bidli a construction bidding platform?
No. Bidli is an AI sales rep for construction trade companies. It does not post projects or host a bid board. It goes and gets the work a company wants, reaches the person who awards it in that company's name, and hands the owner the job ready to bid.
What is the difference between a plan room and Bidli?
A plan room shows you projects that are already out to bid, alongside the other subs bidding them. Bidli gets your company in front of the person who awards the work before the bid package goes out, and covers work that never reaches a plan room.
Does Bidli replace BuildingConnected, PlanHub, or ConstructConnect?
Bidli does a different job. Those platforms manage invitations and bids on posted projects. Bidli goes and gets work in your name, including work that is never posted, and hands you the job ready to bid. Keep your bid board for posted projects and let Bidli go get the rest.
How do subcontractors get more invitations to bid?
Get known by the estimators who build the bid lists before the invitations go out. Bidli introduces your company to those estimators in your name and follows up project after project, so your company is on the list.
Is Bidli an alternative to bidding platforms for subcontractors?
Yes. Bidli is the alternative that does the work for you. Instead of searching posted projects, you get live bid opportunities brought to you, with the person who awards the work already in the conversation.
What does Bidli hand me?
A live bid opportunity: the project, the scope, the details, and the person who awards it, the minute it is ready to talk numbers. You price it. You win it.