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// For subcontractors

RFIs INTO THE VOID,
BACK-CHARGES OUT.

You sent the RFI eleven days ago. The GC didn't respond. The work proceeded around you. Now there's a delay claim with your name on it for something that wasn't your scope. Marapone builds private AI that tracks every RFI you sent, logs every delivery, and pre-builds the claim documentation you wish you had three months ago. You own the model. You own the data. No subscription.

Built for mech, EC, and finishing trades running concurrent jobs across multiple GCs · Toronto + Rome

// The four things that quietly cost you money

WHERE SUBS BLEED

PAIN 01

RFIs disappear into the GC's inbox

You sent the question on day three. It's day fourteen. No response. Your guys are standing around or guessing. When it finally comes back you've already eaten the delay — and the GC says you should have proceeded.

→ FIX: RFI Intelligence (sub-side) tracks every RFI you've issued, ages it, and pre-drafts the follow-up note plus the impact statement if it's not answered in time.

PAIN 02

Delivery slips end up under truck seats

Three months later the GC claims your gear arrived late. Your foreman knows it didn't. The signed slip is somewhere — maybe a crumpled photo on his phone, maybe the supplier's portal. By the time you find it the back-charge is in the contract closeout.

→ FIX: Daily Log Synthesizer turns the foreman's two-minute voice memo into a structured log with deliveries, photos, and timestamps. Defensible from the day it happens.

PAIN 03

Back-charged for scope that wasn't yours

The GC issues a $40k back-charge for controls wiring you never priced and never agreed to. You know it wasn't in your scope. Proving it now means digging through six months of email and the original bid documents.

→ FIX: Subcontractor Scope Gap Finder reads your original scope letter against the spec and the GC's contract, and surfaces exactly where the line was drawn.

PAIN 04

Claim documentation is too thin to fight

You know you had four weeks of delays caused by missing information. Your file has three emails and a calendar entry. The PM left. The foreman's notebook is half-legible. You write off the claim because you can't make it stand up.

→ FIX: The build keeps a continuous, timestamped record of RFIs sent, responses received, and field impact — so when you need a claim, the file already exists.

// What we build for subcontractors

THREE SYSTEMS, ONE BUILD.

Most sub builds bundle these three modules. Trained on your scope letters, your standard pricing, and the way you actually work in the field. Not a generic chatbot.

RFI Intelligence sub-side

BUILD 01

RFI Intelligence (sub-side)

Tracks every RFI you've issued, ages it against the contract response window, and drafts the follow-up note plus the impact statement when the GC goes silent. Your record stops being a guess.

Daily Log Synthesizer

BUILD 02

Daily Log Synthesizer

Your foreman talks for two minutes. The system writes a structured log: crew, deliveries, blockers, photos with timestamps. The defensible field record you needed three projects ago, finally available without any extra typing.

Scope Gap Finder

BUILD 03

Subcontractor Scope Gap Finder

Reads your original scope letter against the spec, the GC's contract, and any directives that came after. When a back-charge lands, you have a clean answer on whether the work was actually yours.

// A day in the life

HOW IT SHOWS UP IN YOUR WEEK

06:30 AM

Open RFIs ranked by age.

Before the foremen leave the yard, you see four RFIs over the contract response window — two on the same job. The system has drafted the follow-up note and the impact statement for each. You forward them and the day starts with the GC on the back foot, not your crew.

12:15 PM

Lunchtime delivery, logged in 90 seconds.

Foreman snaps a photo of the slip in the bay, taps record, says "12:10, full pallet of conduit, signed Mike from Acme, two boxes water-damaged." A timestamped, structured delivery record is in the project folder before he gets back to the crew.

04:45 PM

Back-charge arrives, answer ready.

The GC sends a $32k back-charge for finishes the architect added at week 11. You ask the system. Two minutes later you have the original scope letter, the spec excerpt, the directive trail, and a one-page response showing the work was extra. You send it back the same afternoon.

// What subs say after the build

"We used to lose 60-70% of back-charge fights because the documentation just wasn't there. Now the file is built as we go. We've successfully pushed back on three back-charges this quarter that we would have eaten last year."

// Not a sub? We build for these too:

// Free, real, no obligation

SEND ONE OPEN BACK-CHARGE.
GET A REAL RESPONSE PACK.

Pick one open back-charge or disputed scope item — your scope letter, the GC's claim, and any relevant emails. We'll run it through the same system we'd build for you and send back a draft response pack plus a short walkthrough, usually within 24 hours.