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Overview
The commercial operating system for construction. Capture a commercial event once, every downstream workflow stays connected.
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Contract models
Fixed, cost plus & open book
Claim a fixed sum, reimburse at actual cost, or bill fully open book. ClaimStack handles each, the right way.
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Solutions
Overview
Built for every side of the contract. One commercial record the whole project team can trust, head contract to supplier.
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For subcontractors
Free to collaborate
Invited to a project? Submit claims and variations in a format that holds up, free forever.
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Resources
Overview
Practical guides on claims, variations and contracts, plus how ClaimStack connects, who's behind it, and how we keep your commercial data safe.
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A 30-minute walkthrough on your numbers, where the margin usually leaks.
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Pricing
Product/Correspondence

Correspondence that holds its own record.

Raise and manage formal project correspondence, RFIs, EOTs and notices. Every item is sequence-numbered, addressed company to company, and kept as the record. It is the record, not an inbox.

From a raised notice to a resolved matter, kept as one record.

01 · Raise

RFIs, EOTs and notices in one consistent format.

Raise formal correspondence in a consistent, sequence-numbered format. Contractual notices track their response deadline from the day they are given, so an approaching time bar is visible rather than buried, and nothing gets written on the side or lost in a personal inbox.

NOT-006 · Contractual notice
Latent condition: rock shelf at pile P14
Open
Response due in4 daysby 14 Jul
MERRDG·Meridian Construction to Ridgeline Developments
Submitted7 Jul
Under review8 Jul
Response due14 Jul
Deadline tracked from the day the notice was givenAwaiting response
02 · Respond

Threaded responses, kept in one place.

Numbered responses keep the whole back-and-forth together, with attachments travelling on the item and a complete audit trail behind every message.

RFI-012 · Request for information
Switchboard clearance to eastern wall
Responded
AE
Apex ElectricalSubcontractor29 Jun
Question

Main switchboard MSB-1 is shown 450mm off the eastern wall, but the structural upstand at grid E leaves 380mm clear. Please confirm the minimum clearance to the wall or advise a revised setout so we can release the switchboard for manufacture.

MC
Meridian ConstructionHead contractor3 Jul
Response 1

Maintain 600mm clear working space to the front face per AS 3000. Relocate MSB-1 300mm west onto the revised plinth (SK-E-104 issued), which clears the grid E upstand and preserves egress. Proceed to manufacture on the amended setout.

One thread per matter, retained on the recordResponded in 4 days

How a matter moves.

STEP 01
Raise

Open an RFI, EOT or notice in a consistent, sequence-numbered format.

STEP 02
Address & attach

Send it company to company, cc who needs it, and attach the files.

STEP 03
Respond

Numbered replies keep the whole exchange in one thread.

STEP 04
Resolve with a record

Close the matter with a full audit trail retained against the job.

Protected by design

Every notice and response, kept on the record.

Every item and reply is retained with a complete audit trail. If a matter is ever disputed, the record is already there, addressed, dated and attached.

Sequence-numberedEvery item and response carries its own number, in order.
Audit trailEach message retained against the project and its contract.
ConfidentialSensitive matters can be marked confidential when raised.
1
Register per project
100%
On the record
0
Lost in an inbox
1
Thread per matter
Stop losing
the paper trail.