REX is a purpose-built AI compliance assistant developed specifically for Australia's building and construction sector.
Designed to support licensed builders, site supervisors, and construction professionals. REX simplifies compliance by helping you interpret regulations, analyse inspection reports, and manage site documentation, all from one smart, intuitive platform.
AI tools designed to support your team, adapt to your workflows, and scale with your business.
A 24/7 on-demand AI assistant trained on Australian codes, regulations, and construction practices. Ask technical, site-specific questions in plain language and receive fast, referenced responses you can rely on.
Get accurate, actionable insights across construction methods, tolerances, approved materials, and defect classifications. No guesswork, no BS.
Upload any inspection report and REX will review each item, cross-check against regulatory frameworks, and identify whether rectification is required. Save hours of manual analysis while reducing risk exposure.
REX was developed in consultation with builders, building consultants, certifiers, and legal experts, ensuring it understands how construction really works on the ground.
Beyond AI compliance, Rex Builder now handles the operational, legal, and financial side of every project: store and share documents, book trades, run onsite numbers, get legal and accounting support, and lock in the certificates and reports your job actually needs. All at fixed, transparent prices.
Store all your plans, permits and documents in one place. Request quotes from several tradies at once, straight from the job folder, so you save hours of follow-up calls and email chains.
Book trades straight from this function. Once both parties accept the booking, it lands in each calendar automatically. No double-handling, no chasing dates, far less admin.
Your onsite calculator that helps you work out site issues instantly without breaking out the spreadsheet. Designed to handle the everyday numbers that come up between jobs.
Practical support with contracts, disputes, notices, and general building-related legal matters. Get guidance on contracts, payment claims, variations, defects, and delays, and prepare documents or letters when problems arise. Plus, search a complete archive of past state-based tribunal decisions and use real precedent to back your own case when it matters.
Practical financial guidance. Upload your business financials and Rex will analyse them, highlight issues, identify opportunities for improvement, and suggest where you can run a tighter operation. Plus general tax-related guidance to help you understand your position and improve efficiency, structure, or planning.
Mandatory on every new build, now booked directly through Rex Builder. Single storey from $179, double storey from $239. No middlemen, no markups, tracked alongside every job.
When your surveyor flags a non-standard condition, get a performance solution certificate through Rex Builder at a flat $549. Real scenarios, fast turnaround, no hunting for a consultant.
Book soil testing through Rex Builder at $329. Mandatory for every build, at a fraction of contractor rates. Fast turnaround, certified reports, and tracked alongside every job in your account.
Re-establishment surveys from $799, feature and level surveys from $299. Booked directly through Rex Builder. No runaround, no inflated rates, tracked and on record in your account.
A 60-second walkthrough. Press play to see Rex Builder in action.
From sole traders to large commercial outfits. REX is shaped around how your team actually works.
Get fast, code-referenced answers and end the back-and-forth on inspection reports.
Settle disputes on the ground with the right NCC / AS reference in seconds.
Tighten margin and audit trail across every job, without another platform to learn.
All the answers, forms and tools usually locked behind a $300/hr consultant.
Beyond compliance answers, REX gives builders the resources, community, and admin tools to run a tighter operation.
Access a growing library of industry-vetted compliance resources, code interpretations, and real-world examples to keep your team informed and your site compliant. All content reflects the most recent changes to building codes and standards.
An exclusive, professional community for licensed builders. Share experience, troubleshoot real-world issues, and gain insights from peers on everything from compliance and disputes to site management and client comms.
Instant access to templated documents, legal forms, defect notices, inspection checklists, and site paperwork. Designed to streamline day-to-day operations and reduce time spent on admin.
REX offers a range of plans to suit solo builders, growing businesses, or large commercial operators. Flexible pricing, scalable tools, and priority support, backed at every stage of the job. Start your free 30 day trial today.
For construction companies and commercial operators with more than 5 users. Everything in Premium, plus volume per-user pricing, dedicated onboarding, and a named account manager.
REX is an AI-powered compliance and inspection assistant designed to help builders and construction professionals interpret building codes, standards, and respond to inspection reports accurately and efficiently.
REX is not a general-purpose chatbot. It's a purpose-built AI compliance assistant for the Australian construction industry, trained on a curated library of building codes, Australian Standards, regulatory frameworks, and industry-vetted resources. REX doesn't pull random answers from the open internet. Every response is grounded in trusted construction sources, so you can act on what it tells you with confidence.
REX is built for licensed builders, site supervisors, tradespeople, building consultants, and construction managers who want a fast, reliable assistant to help navigate compliance and defect reporting.
REX can read inspection reports, identify which items need rectification, and flag unnecessary or non-compliant claims, saving time and money.
REX does not perform physical inspections. It is a digital assistant that helps interpret and respond to inspection findings, check standards, and guide rectifications, acting as your technical and compliance consultant.
Yes. With a paid subscription, you can upload PDF or Word-based inspection reports. REX will review the content and generate a compliance-based response.
You can ask REX anything from "What's the maximum overhang allowed on a bottom plate?" to "Do I need expansion foam around a driveway?" to "Does this defect require rectification under the NCC?"
Yes. REX is accessible via both desktop and mobile, with a simple and intuitive interface designed for use onsite.
Absolutely. REX provides clear, code-referenced explanations that can help you professionally dispute unjustified defect claims based on building standards.
REX uses AI models tailored to construction law and standards. It's designed to be highly accurate, but always encourages users to cross-check critical decisions with a licensed building surveyor or legal professional.
Yes. All data uploaded to REX is encrypted and stored securely. We do not share your documents or personal information with any third parties.
Depending on your plan, you get a set number of report uploads, unlimited compliance questions, access to forms and documents, training content, the builders hub, and multi-user functions.