The contract & sales platform for Australian property

Property.
Exchanged.

OPEX runs the entire property sales lifecycle, from master contract to digital exchange and PEXA settlement, with legal-grade evidence at every step.

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$2.1Bin property sales transacted via OPEX in the first half of 2026

200+leading law firms and property developers on the platform

Trusted by leading developers and property law firms

One platform. Two products.

Choose the OPEX product that fits.

OPEX for Business is a standalone e-signing product for any organisation. OPEX for Real Estate includes the same secure signing engine, together with the complete workflow for property project sales, from master contracts and sales advice through exchange and settlement.

OPEX for Real Estate

Run the entire property sales lifecycle

Manage off-the-plan, subdivision and registered projects from setup and master contracts through sales, exchange, variations, nominations and settlement.

Projects, lots and live sales schedules
Master contracts, sales advice and ID verification
High-volume exchange, variations and nominations
PEXA settlement, trust accounting and adjustments

Includes all OPEX for Business e-signing features

Explore OPEX for Real Estate

OPEX for Business

Secure e-signing for any organisation

Send NDAs, employment contracts, cost agreements, proposals and internal forms for signature in minutes. It works entirely on its own, with no real estate platform required.

Re-send multiple times, without expensive envelope fees
SMS-verified signing, reminders and a complete audit trail
Ordered or simultaneous signing
Simple $5-per-document pricing, with no seat licences

Explore OPEX for Business

From enquiry to settlement

OPEX manages the whole transaction

Generic e-signing tools stop once a document is signed. OPEX manages every stage of the contract process, from drafting and review through signing, deposit and exchange, with configurable workflows that keep every party and next step on track.

01DraftGenerate each contract from your firm-approved master template.
02Buyer solicitor reviewIssue the contract for review and automatically notify the relevant parties.
03Buyer signingBuyers sign and complete witnessing remotely through a secure, mobile-first link.
04Deposit receivedRecord the deposit, generate a receipt and share it with the relevant parties.
05ExchangeOnce both parties have signed, the contract is exchanged and the transaction is recorded.
06Bulk communicationsSend personalised confirmations and updates to buyers and their solicitors.
07Settlement calculationsCalculate adjustments and the balance due on settlement.
08PEXA workspaceCreate the PEXA workspace in one click and match the relevant subscribers.
09SettlementIssue the settlement statement and complete the transaction through PEXA.

Inside the platform

Built for property, not bolted together

No manual spreadsheets, no external e-signing vendor and no stitched-together point tools.

OPEX portfolio dashboard showing exchanged value, deposits and project totals

Live sales & portfolio dashboards

Track every project, lot and contract in real time, from available stock through to settled.

Native e-signing & witnessing

Proprietary signing built into the platform, with SMS verification and remote witnessing.

The OPEX settlement calculator listing adjustments against a lot

EOI to exchange to settlement

One workflow carries each sale from expression of interest through exchange to PEXA settlement.

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Legal-grade evidence

Every exchange, fully evidenced

OPEX’s proprietary e-signing technology is built directly into the platform, so the evidence is captured as part of the transaction, not added afterwards. Every signed document is supported by a detailed audit report and a unique SHA-512 fingerprint, making the signing process verifiable and any later alteration evident.

SMS verificationEach signer is authenticated using a unique code sent to their mobile.
SHA-512 document fingerprintEvery completed PDF receives a unique cryptographic fingerprint, allowing any subsequent change to be detected.
Complete audit reportA detailed record of delivery, access, verification, signing, witnessing and exchange, including timestamps, IP address, browser and location data where available.

Explore OPEX security

Made for the whole deal ecosystem

One platform, every party.

Everyone involved in a project sale works from the same live information, with access, workflows and visibility tailored to their role.

Law firms & legal teams

Create, issue and manage every contract, with complete visibility from sale through to settlement.

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Property developers

Track every lot, sale and key milestone across every project in real time.

Explore OPEX for developers

Sales & marketing agents

Submit sales advice, monitor contract progress and keep every sale moving.

Explore OPEX for sales teams

Banks & financiers

Verify presales against executed contracts and monitor project progress with confidence.

Explore OPEX for financiers

Success stories

Real projects. Proven results.

See how leading developers, legal teams and sales agents are using OPEX across major Australian property projects.

Aerial view over the Serenity 4212 estate, its lake and canals, with the Gold Coast skyline beyond

Explore the success stories

Customer feedback

What our customers say

OPEX has been brilliant in helping Cornwalls establish and streamline our off-the-plan development practice. The team has worked closely with our lawyers, paralegals, finance and IT teams to integrate projects and improve the process from contract signing through to settlement.
The direct access we have to OPEX’s management and development teams is a major benefit. Our feedback is heard, valued and reflected in the continued development of the platform.
Michael MammenPartner, Cornwalls

Thanks to Leslie and the OPEX team for their exceptional support and involvement during the setup of OPEX. Every question was answered and we felt supported throughout the entire process. Moreover, they exhibited an open-minded approach towards our feedback and requirements, showing a genuine desire to comprehend our processes and make necessary improvements to align OPEX with the needs of our clients.
We eagerly anticipate our ongoing collaboration with the OPEX team as they consistently enhance our operations, leading to improved efficiency and professionalism in our interactions with clients.
Peter MasonPrincipal Lawyer, Mason Law

From a developer’s perspective, our experience working with OPEX has been highly positive. The team demonstrates a strong understanding of the contractual framework, along with a high level of attention to detail at every stage of the process. Their ability to manage documentation, track variations, and proactively address potential issues has added significant value to our projects.
Communication has been clear, consistent, and reliable throughout. Overall, OPEX has proven to be a dependable and knowledgeable partner, and we would highly recommend their services.
Glenvill DevelopmentsProperty developer

OPEX has transformed the way we manage off-the-plan property transactions, delivering a streamlined and efficient digital contracting experience for our clients and project teams. The platform is intuitive, reliable, and continues to evolve in response to industry needs.
A key part of our positive experience has been the outstanding support provided by Karen Olsen and Jennifer Ivosevic. Their responsiveness, industry knowledge, and commitment to client success have made them trusted partners to our team. From onboarding through to ongoing project delivery, their professionalism and proactive approach have ensured a seamless experience.
We highly value our partnership with OPEX and look forward to continuing to work together on innovative property development projects across Australia.
Eu Ming LimPartner, Thomsons Lawyers

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See OPEX on your own projects

Book a walkthrough with our Australian team. Free training and onboarding included, so we help you set up your first projects and master contracts.

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Property.
Exchanged.