Construction AP Automation Built for QuickBooks
Job costing, lien waiver tracking, retention holdbacks, purchase order reconciliation, and approval workflows — everything construction companies need that generic accounts payable software doesn't handle.
Nexus Build is construction accounts payable software purpose-built for QuickBooks. Every invoice is coded to the right job, phase, and cost code. Three-way matching validates invoices against purchase orders and receiving reports automatically. Lien waivers are tracked per vendor per job. Retention holdbacks are calculated automatically. And your subcontractors get a self-service portal to check payment status and upload documents — all synced bidirectionally with QuickBooks in real time.
Why Nexus Build
Job Cost Coding
AI assigns every invoice to the correct job, phase, and cost code based on vendor history and project context.
Lien Waiver Tracking
Track conditional and unconditional waivers per vendor per job. Block payments until required waivers are received.
Retention Management
Automatic retention holdback calculation per contract. Track retainage per vendor per job with release workflows.
Nexus Build Features
Everything you need to automate your AP workflow
Job Cost Coding
AI-powered assignment of invoices to jobs, phases, and cost codes
Lien Waiver Tracking
Track conditional and unconditional waivers per vendor per job
Retention Management
Automatic holdback calculation with per-job retainage tracking and release workflows
Subcontractor Portal
Self-service portal for subs to check payment status, upload waivers, and view retention held
Three-Way Matching
Automated purchase order reconciliation — match invoices to POs and receiving reports with configurable tolerances
QuickBooks Sync
Bidirectional sync of vendors, bills, classes, and chart of accounts
Approval Workflows
Route invoices based on amount, job, and vendor with multi-level approvals
AI Invoice Capture
Extract line items, amounts, and tax from PDFs and emails with 99% accuracy
Audit Trail
Immutable log of every action from capture to payment with full job context
The Results
Accurate Job Costs
AI codes every invoice to the right job and cost code, eliminating misallocations that hide overruns.
Lien Waiver Compliance
Never pay a sub without the required waiver. Automated tracking prevents compliance gaps.
90% Less Manual Entry
AI captures invoice data so your team focuses on project management, not data entry.
Faster Sub Payments
Subcontractors get paid on time with self-service status checks and streamlined approvals.
Get started from $79/mo
No credit card required. Free 14-day trial with full features.
Start Free TrialFrequently Asked Questions
Is Nexus Build only for construction companies?
Nexus Build is designed specifically for construction — general contractors, specialty trades, and developers. The job costing, lien waiver tracking, and retention management features are built for how construction AP actually works. For general AP automation, see Nexus AP.
Does Nexus Build work with QuickBooks Desktop and Online?
Yes. Nexus Build integrates with both QuickBooks Online and QuickBooks Desktop. The sync runs in real time for Online and on a scheduled basis for Desktop.
How does job cost coding work?
Our AI learns from your vendor and project history to suggest the correct job, phase, and cost code for each invoice. You review and approve — and the AI gets smarter with every correction. Most teams see 90%+ accuracy within the first month.
Can subcontractors upload lien waivers themselves?
Yes. The subcontractor portal lets subs upload conditional and unconditional waivers, check payment status, and view retention held — reducing back-and-forth with your AP team.
How does construction accounts payable software differ from generic AP automation?
Generic accounts payable software handles invoice capture and approvals but lacks construction-specific features. Construction AP software like Nexus Build adds job cost coding, lien waiver tracking per vendor per job, retention holdback management, subcontractor portals, and purchase order reconciliation against job budgets — features that are essential for general contractors and specialty trades.
Ready to try Nexus Build?
See how Nexus automates your AP workflow end to end.