Commercial subcontractors face two kinds of chaos: bid chaos and organizational chaos. Missed ITBs, forgotten deadlines, and overflowing inboxes plague the bid side. Meanwhile, spreadsheets and memory can't handle leads, schedules, and client communications. Without a proper CRM, leads scatter across email threads with zero visibility. Proposals get delayed, documents get lost, follow-ups fall through the cracks.
Growing subcontractors feel this acutely. The more you bid, the harder tracking becomes. Teams juggle scheduling in silos – Google Calendar here, Excel there, nothing syncs. The result: bidding mishaps, scheduling conflicts, unnecessary stress.
Enter Sunbase Construction CRM and Downtobid. Sunbase offers an all-in-one platform for CRM, proposals, and scheduling. Downtobid focuses specifically on preventing bids from slipping through the cracks. Both streamline preconstruction, but differently. Let's break down what each tackles best.
Key Takeaways
- Downtobid stops missed bids. It's a specialist that automates bid tracking, ensuring no invitation or deadline slips through email chaos.
- Sunbase organizes your entire business. It's an all-in-one CRM that manages leads, proposals, and scheduling, replacing scattered spreadsheets.
- Choose Downtobid for bid volume. Use it if your main pain point is managing a high volume of GC invitations and missing deadlines.
- Choose Sunbase for sales process chaos. Use it if you lack a CRM and need to structure lead tracking, follow-ups, and proposals.
Downtobid: Never Let a Bid Invitation Slip Through

Downtobid is an AI bidding tool that centralizes bid invitations and automates tracking, so subcontractors stop losing opportunities in email black holes. Its Bid Board pulls in ITBs, deadlines, and addenda automatically attacking the “missed bid” problem head-on.
If missed ITBs or last-minute scrambles are constant pain points, Downtobid eliminates them by catching every bid invite and keeping you ahead of deadlines. It won't manage your sales pipeline or schedule crews, but it ensures you have plenty of jobs to schedule by boosting bidding responsiveness and capacity.
Bid Management Software
Downtobid is all about mastering the bid management workflow. There's a reason why the software is among the top bid boards for subcontractors. As a subcontractor, you might be getting bid invites from multiple generals – via email, via building connected platforms, etc. Downtobid’s promise is that no matter where the invite comes from, it will end up on your radar.

It achieves this by integrating with your email and using smart parsing to detect bid-related emails. Instead of you manually logging each ITB into a spreadsheet (or worse, forgetting to log it at all), Downtobid auto-creates entries on a digital Bid Board for you.
What Does This Bid Board Do?
It provides a single, consolidated view of all your bidding opportunities, each with a status and key info attached. Got five new ITBs this week? You’ll see five new entries, with project names, bid due dates, and whether you’ve RSVP’d or not.
If an invite includes a link to drawings or a spec manual, Downtobid attaches that too. Think of it like an email inbox, but purpose-built for bids – complete with filters and tags for things like “Site Walk Scheduled” or “Addendum Received.”
Never Miss a Deadline or Scope with Automated Tracking
A huge benefit here is deadline tracking. Downtobid automatically captures the bid due date from the invite (or any subsequent addendum changing it) and can sync it to a calendar and send you reminders. No more last-minute “oh no, that’s due today!” panics.
It also helps with coverage: you can mark which trades/scopes you plan to bid and see gaps early. For example, if you’re a subcontractor that sometimes bids multiple divisions (say a specialty contractor handling both fire protection and low-voltage), Downtobid can help ensure you respond on all relevant scopes for a project.
Streamline Communication and Increase Bid Volume
Another neat feature: automated bid responses and follow-ups. Downtobid can send a polite decline if you’re not bidding (so you maintain good relationships by not ghosting GCs), or send follow-up emails to GCs for bids you haven’t heard back on. It essentially adds some CRM-like functions specific to bids, ensuring communication around bidding is prompt and organized.
Downtobid focuses on external workflow – connecting GCs and subs. It won't manage crew schedules or internal tasks, but ensures you win bids that create those tasks. By eliminating manual bid tracking and reducing missed invites, subs pursue more projects with the same estimating team.
The value prop: save dozens of hours monthly on bid coordination and increase bid volume, leading directly to more wins. If missing bids or losing control of your precon pipeline is your top concern, Downtobid is the laser-focused solution.
Sunbase Construction CRM Software: Unified Precon, Proposals, and Scheduling

Sunbase Construction CRM offers an all-in-one platform for subcontractors needing structured lead management and bid tracking.
It includes tools for scheduling, budgeting, document control, team collaboration, and project tracking for successful project completion.
It replaces spreadsheet chaos with a clear pipeline, automates follow-ups, and speeds up proposals with templates and e-signatures. Think of it as a personal assistant for your sales process, ensuring nothing falls through from first call to signed contract. Sunbase also includes project management features (scheduling and task tracking) to smooth the transition from winning to starting jobs.
Key features and capabilities of Sunbase include:
Centralized Lead & Bid Management
Sunbase acts as a central hub for all opportunities – formal ITBs from GCs or casual client inquiries. You log each opportunity and track its stage (Lead, Bidding, Proposal Sent, etc.) with visual boards or lists.
No more leads falling off the radar from forgotten spreadsheet updates – the system is your single source of truth. It provides automated follow-ups, like reminding you to check on a bid submitted two weeks ago. Sunbase brings basic CRM discipline to subcontractors who lack it, ensuring timely responses to every prospect or invite.
Proposal Generation with E-signatures
Sunbase includes tools to create professional proposals and contracts. Use templates with your branding and scope breakdowns to quickly turn estimates into polished PDFs ready to send.
It supports electronic signatures, so GCs or clients can sign online, speeding up turnaround times – no separate e-sign services or paper printouts needed. This is a major upgrade if you're manually editing Word docs for each bid. Sunbase merges in details and gets proposals ready in clicks.
Scheduling & Task Management
While not full-blown project management, Sunbase offers basic calendar and task scheduling features. You can schedule site walks, bid due dates, and post-award tasks like "Kickoff Meeting" or "Crew Mobilization" on a shared team calendar. Tasks tie to pipeline stages, ensuring smoother handoff from precon to execution. For instance, marking a bid "Won" can trigger tasks to schedule crews or order materials, bridging the gap between contract and starting work.
Integrated Communication & Document Storage
Sunbase brings communications (emails, SMS) into the platform. Every client or GC interaction can be logged or done through Sunbase, maintaining a complete history. It stores documents like plans, photos, and contracts in project records, so your team isn't hunting through email attachments for the latest drawing. It aims to be your one-stop shop for job and lead information.
Sunbase's appeal is its modern, user-friendly design built specifically for construction. It's not as heavy or complex as older construction CRMs, making it attractive for small to mid-sized subs wanting organization without huge IT deployment. You see its construction focus in the terminology (bids, jobs, not generic sales lingo). Being cloud-based and mobile from the ground up gives it a fresh interface.
Being newer and all-in-one means Sunbase doesn't go as deep in certain areas. Its estimating/proposal tools are handy but not as advanced as specialized software. Scheduling is basic – key dates and tasks, not full construction schedules. Integrations with accounting or detailed project management tools are still developing, so check compatibility if you have existing systems.
In short, Sunbase is great for subs with no real CRM or unified system. It fills multiple gaps at once (pipeline tracking, follow-ups, proposals, simple scheduling), tackling the "Post-it notes and Excel" scenario with a cohesive, accessible cloud platform. We ranked it as one of the best CRMs for subs.
When to Use Each (and Can They Work in Tandem?)
Deciding between Sunbase and Downtobid comes down to pinpointing your primary pain and workflow:
Use Sunbase Construction CRM if...
You need a general boost in organization across your sales and precon process. Sunbase is ideal when your current state is disjointed – leads in one place, bid deadlines in another, no oversight on follow-ups. If your team is missing out on jobs not because of the volume of ITBs, but because of poor internal tracking and slow proposals, Sunbase directly addresses that.
For example, a growing subcontractor (say a drywall company) that primarily relies on bidding but doesn’t have a CRM would use Sunbase to capture every bid opportunity in one pipeline, send out polished proposals quickly, and ensure tasks like site visits or scope reviews are scheduled and completed.
It’s also a fit if you want some light project management to carry you from bid to project start. Choose Sunbase when you want one system to handle many tasks reasonably well – especially if you currently lack a CRM and are looking for an easy-to-adopt, modern solution to tighten up your preconstruction and client management workflow.
Use Downtobid when...
The volume of bid invites and the risk of missing them is your number one problem. If you find that most of your potential jobs come via GC invitations and you’re overwhelmed by tracking them, Downtobid is the specialist tool for that scenario.
A mechanical subcontractor chasing work from lots of general contractors might find Downtobid invaluable – it will automatically sort the flood of ITBs (so no opportunity is forgotten) and help prioritize which bids to tackle first (by due date, project size, etc.).
Also, consider Downtobid if you already have some CRM or organizational tools for other aspects of the business, but nothing that adequately handles the invite-to-bid process. Choose Downtobid to effectively “outsource” the tedious part of bid tracking to automation, freeing your estimating team to focus on scoping and pricing jobs rather than inbox babysitting.
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Use Both Customer Relationship Management Tools Together...
Is there a world where a subcontractor uses both Sunbase and Downtobid? Potentially, yes – especially for those experiencing rapid growth or splitting between private clients and GC work.
Example: A concrete subcontractor uses Sunbase CRM to manage leads and relationships for private jobs (like a developer contracting them for foundations) and organize their overall sales pipeline. Sunbase keeps proposals and follow-ups in check. Simultaneously, they're getting lots of GC ITBs for commercial projects. They add Downtobid to automatically capture and track those invitations (since Sunbase requires manual entry).
In this workflow, Downtobid feeds front-end bid data – the estimating team works from Downtobid to manage incoming bids. When bidding a GC project, they could log it in Sunbase as an opportunity for their master CRM, but rely on Downtobid for the actual bidding process. If they win, they manage the client/GC relationship and scheduling through Sunbase.
Using both requires some duplicate customer data entry (no native integration). Use Downtobid purely for bid tracking and Sunbase for everything post-submission. This dual approach suits medium or large subcontractors with distinct roles (estimators vs. project managers) who can assign tools by department.
For smaller subcontractors, using both might be overkill. Pick based on immediate pain: chaotic bid invites = Downtobid; disorganized sales/proposals = Sunbase.
Conclusion: Modern CRM vs Focused Bid Tool – What’s Best for You?
For GC-focused subcontractors, Downtobid might deliver more immediate ROI by directly tackling revenue generation through bidding. For those with mixed work or internal disorganization, Sunbase's broader capabilities prevent hot leads from growing cold, driving revenue more indirectly but critically.
Sometimes both work in sequence. Start with Sunbase to establish solid sales processes, then add Downtobid to scale bid volume. Or start with Downtobid to stabilize bid chaos, then add Sunbase to fortify other business operations.
In summary, Sunbase is a wide-angle lens improving overall business clarity (pipeline, customer communication, scheduling). Downtobid is a zoom lens focused tightly on bid management. Identify which area hurts more and deploy accordingly. Either way, moving from manual chaos to purpose-built software will make construction professionals more efficient and successful.