Every GC pay app read against the contract, the same day.
STACK Infrastructure builds and runs hyperscale data center campuses. 85% of its job spend flows through GC pay apps, so Kos reads every page of each one against the GMP before the draw.
- Industry
- Data centers
- Product
- Billing review
- Through GC pay apps
- 85% of job spend
- Draws
- $300–500M a month
- Documents
- G702/G703, GMP, SOV, waivers
- Before Kos
- Spot checks, by hand
The Situation
Hundreds of millions a month, read by hand.
Between $300M and $500M of draws went out every month, and 85% of job spend arrived as GC pay apps of 800 pages and more. The team checked each one by hand against the GMP, the schedule of values and the backup, and the lender’s deadline didn’t move.
- of job spend flows through GC pay apps
- 85%
- of draws a month, every line checked
- $300–500M
- pay-app review, down from days
- Same day
STACK, 2026.
Before Kos
- 800-page pay apps read on spot checks
- Backup and lien waivers chased by email
- The comment log rebuilt in a spreadsheet every month
- The draw held for the last open question
With Kos
- Every page read against the GMP and prior months
- Missing waivers and backup flagged with the clause
- The comment log filled in STACK’s own Excel format
- The draw ties out before the bank asks
How Kos Works It
Forward the pencil draft. Kos reads every line.
The GC’s pencil draft is forwarded to Kos.
Like it would be to a colleague. Kos reads the G702 and G703, the sub invoices, lien waivers and certified payroll.
Kos flags what doesn’t tie out.
Billing ahead of the work, a missing sub-tier waiver and retainage held short come back with the line and clause behind each one.
The review lands in STACK’s own workbook.
A line-by-line comment log in the team’s own columns, ready for the project executive to send back to the GC.
The draw ties out before the bank asks.
With every finding cited by clause and page, the draw package goes to the lender ready, and the subs get paid sooner.
“Kos reads the whole pay app, not a sample. Every flag comes back with the page and the clause, so we can check it ourselves.”
The Results
Every draw, every line, one standard.
$18.6M
Overbilling held before payment
Billing ahead of the work, held until it’s in place: found before the draw, not at audit.
1,140
Missing waivers flagged
Sub-tier waivers caught before payment, each with the clause behind it.
0
Draws returned by the lender
Every finding cites its clause and page for the lender’s technical advisor.
9
Campuses on one standard
STACK’s controls apply the same way on every site, without adding headcount.
STACK, last 12 months.
- Closing Thoughts
- With 85% of job spend running through GC pay apps, review was the bottleneck between the work and the draw. Kos reads every page against the contract, and STACK’s team makes the call.
- Industry
- Data centers
- Product
- Billing review
- Works With Kos Over
- EmailTeams
- Kos Works In
- ExcelSharePoint
Forward Kos your next pencil draft.
No new software to learn. Email Kos the work and watch it run.