For general contractors

Every sub invoice verified before it gets approved

You manage 10-20+ subcontractors per project. Ella verifies every invoice against committed scope, flags overbilling and missing change orders, and keeps your draw documentation clean — automatically.

Book a 30-min demo See pricing

Overbilling and scope gaps cost you margin — and relationships

On a fixed-price contract, every dollar a sub overbills comes out of your profit. And when the owner pushes back on a draw because something wasn't documented, the GC is the one stuck in the middle.

Sub invoices stack up faster than you can review them

With 15+ trades on a job, invoices arrive daily. Your PM checks what they can, but cumulative overbilling across multiple invoices from the same sub slips through.

Disputes that start with a bad invoice

A sub bills for work outside the approved scope. You pay it. Three months later the owner pushes back on the draw. Now you're in a dispute with both sides. Ella catches it before you pay.

Change order chaos across trades

Electrical adds a panel, plumbing reroutes a line, framing adds blocking. Each one needs a CO. Without tracking, some get verbal approval only — and you're on the hook when the owner disputes the cost.

How it works

How Ella protects your margin

No new software to learn. Ella plugs into your project inbox, builds a complete cost picture per trade, and reviews every document that comes in.

Connect your project inbox

Link Gmail or Outlook. Ella reads every sub invoice, quote, change order, and document automatically.

Ella builds a cost picture per trade

Every vendor's quote history, committed amounts, cumulative invoices, and change orders — organized and linked.

Ella Insights flag risks

Commitment variance, duplicate invoices, missing COs, and scope gaps flagged with evidence before anything gets approved.

Clean documentation for every draw

When it's time to bill the owner, your backup is already organized. Every invoice verified, every CO tracked, every dollar documented.

Real example

Electrical sub overbills by $6,700 across 6 invoices

Your electrical sub has billed $94,200 across 6 invoices. Their approved order was $78,000 plus two change orders totaling $9,500 — committed amount of $87,500. That's $6,700 over commitment (7.7%). Ella flagged Invoice #4 where the overage started — a line item for "additional panel installation" that wasn't covered by any CO.

Each invoice looked routine. Only the cumulative view reveals where the overage started and why.

app.getkiron.com/projects/142-oakridge

Ella Insights

Apex Electrical — Cumulative invoice review

Confirmed order

$78,000

Change order #1

+$5,200

Change order #2

+$4,300

Total committed

$87,500

Invoice #1

$14,500

Invoice #2

$16,800

Invoice #3

$15,200

Invoice #4Flagged

$17,400

Invoice #5

$15,100

Invoice #6

$15,200

Total invoiced

$94,200

Variance

+$6,700 (7.7%)

Recommendation

Overage started at Invoice #4 — line item "additional panel installation" ($4,200) not covered by any change order. Hold remaining payments and request CO or justification.

Built for every type of GC project

Commercial builds

Dozens of trades, millions in sub contracts. Ella keeps every trade's billing aligned to scope without adding admin staff.

Multi-phase projects

When the same subs work across phases, Ella tracks commitments per phase — preventing cross-phase billing confusion.

Design-build

Scope evolves constantly. Ella tracks every revision, auto-rejects superseded quotes, and ensures invoices match the latest approved pricing.

Renovation / TI work

Tight budgets, fast timelines, high change order volume. Ella ensures nothing slips through the cracks.

What changes when Ella is your financial backstop

Without Ella

✗PM manually cross-checks sub invoices when time allows

✗Cumulative overbilling caught too late — or not at all

✗Change orders tracked in spreadsheets (maybe)

✗Owner disputes over undocumented extras

✗Hours assembling backup for draw requests

With Ella

✓Every line item matched to its approved quote

✓Unpriced scope flagged before you approve

✓Change orders tracked against the budget

✓Overbilling surfaced the moment it lands

See what Ella catches on your next job

Book a 30-minute call. We'll walk through your sub invoices and show you what Ella flags — and how fast.

Book a 30-min demo

Not ready to talk? Get updates instead.