Siteline vs. Knowify

Custom GC Forms and Portal Submission Reduce Pay App Rejections

The standard G702® and G703® forms are not what most GCs actually require. Bigger general contractors use proprietary billing forms, sworn statements, affidavits, and lien waivers, and many mandate submission of forms through portals.

Knowify handles standard G702® and G703® forms well. But if your GC uses a custom form or requires submission through a portal, you're back to manual work. Siteline pre-builds and stores custom forms for any GC. Its library already includes forms from over 24,000 GCs, and Siteline integrates directly with submission portals, including Textura and Procore Pay.

For a commercial subcontractor managing pay apps across multiple GCs, this eliminates one of the most time-consuming recurring tasks in the billing cycle. Kovach Enclosure Systems, a 325-person metal and glass contractor, used to manually manage 50 to 60 pay apps each month. After implementing Siteline, the team there saved more than 3 days per month and reduced A/R aging by 20 days. And flooring contractor Universal Metro eliminated pay app rejections entirely after implementing Siteline, in addition to shaving 10 days off invoice aging and saving 30 hours per week across their team.

Learn more about Siteline's pay app software.

Lien Waivers Are Part of the Billing Workflow, Not a Separate Problem

Knowify has no lien waiver functionality. For commercial subcontractors, that is a meaningful gap. Lien waivers are a standard requirement on most commercial projects, and missing or late waivers are one of the most common reasons pay apps get kicked back.

Siteline handles the full lien waiver cycle. It generates the correct waiver type (conditional or unconditional, progress or final) pre-filled with accurate project data, sends bulk waiver requests to all vendors on a job, tracks response status, validates completed waivers with AI (flagging wrong amounts, missing signatures, and mismatched details), and bundles everything for GC submission. Vendors sign directly from email with no Siteline account required.

Customers have seen the impact firsthand. Beaty Masonry, the largest masonry contractor in Albuquerque, had 75% of payments on hold due to missing or late lower-tier lien waivers. After implementing Siteline, they eliminated compliance holds entirely and cut 20 to 25 hours of weekly waiver admin. And mechanical contractor Industrial Commercial Systems streamlined its waiver workflow, saving the team 8 hours per month and eliminating payment holds due to vendor waivers.

See Siteline's lien waiver management software.

Lien Rights Tracking Lives Inside the Billing Workflow

Lien waivers document what you've already released. Lien rights are what give you leverage in the first place. Yet, most subcontractors manage them in spreadsheets—if they track them at all. Knowify doesn't offer lien rights functionality. Siteline tracks state-specific deadlines and helps teams generate supported lien-rights documents using existing project data.

Those capabilities matter because lien requirements vary from state to state. Every state has different timelines for preliminary notices, different triggers for when rights are at risk, and different requirements for what has to be filed and when. Siteline accounts for those distinctions behind the scenes and surfaces the deadlines and milestones that matter for each project, so your team knows what action to take before it's too late. You can see lien protection status—protected, at risk, or missing key information—across your entire portfolio at a glance without toggling between systems or maintaining a separate tracking document.

Siteline also generates the required state-specific lien documents (e.g., preliminary notices, notices to owner) from existing project data and supports certified mail delivery so teams can send without printing, envelope stuffing, or a trip to the post office.

For subcontractors managing projects across multiple states, lien rights are your last line of leverage when a GC goes silent. By keeping deadline tracking, document generation, and billing in one place, Siteline helps teams protect those rights without relying on spreadsheets, manual reminders, or someone's memory.

Learn more about Siteline's lien rights management software.

A/R Moves Faster—52.6-Day Average DSO vs. a 96-Day Industry Average

Cash flow is one of the most important metrics for commercial subcontractors, and DSO is the clearest way to measure it. Slow billing, rejected pay apps, and inconsistent collections all add days to DSO. Siteline customers achieve an average DSO of 52.6 days, compared to the 96-day industry average tracked in Siteline's 2025 State of Subcontractor Billing report. That's more than six weeks faster, giving subcontractors quicker access to working capital.

Those gains compound over time. Within their first year of using Siteline, customers improve their DSO by an average of 16.7%, driven by cleaner pay app submissions, faster approvals, and more consistent collections follow-up. Acme Erectors, for example, cut DSO from 77 days to 58 days (a 25% reduction) after standardizing their billing workflows in Siteline.

Knowify does not publish comparable DSO data. Its impact on payment speed is largely a function of how cleanly it connects to QuickBooks and how quickly GCs process invoices—factors that Knowify doesn't control.

ERP Integration Options Include QuickBooks and So Much More

Knowify's accounting integration is built around the QuickBooks family of products. For a small subcontractor on QuickBooks Online, that is often sufficient. But growing and mid-to-large commercial subcontractors frequently run construction-specific ERPs, including Sage 300 CRE, Sage 100, Viewpoint Vista and Spectrum, Acumatica, CMiC, and FOUNDATION. Siteline integrates with all of these. It pulls project, contract, and schedule-of-values data from your ERP, then pushes billing data back once it's complete, eliminating double entry and keeping accounting current without manual reconciliation.