For buyers
- Time. A go or no-go in hours, before your team sinks a week into the site.
- Risk. Your risk position in your hands from day one, each risk sourced.
- Money. Your budget behind the sites you’ll actually buy.
Go from a standing start to a cited risk register in hours.
Built for developers, investors and their advisers.
Built for the commercial property sector·Shaped by 12 design partners
Today, the data room is only partly read before the price is agreed. The full review comes afterwards, over 8 to 12 weeks. That’s when the risks surface, and late risks mean a re-trade or a deal that falls away. Finding them early works for buyer and seller alike.
Due diligence today costs you
Skilled time goes into searching for risk before anyone can start resolving it.
Risks sit scattered across disciplines and surface after the price is agreed.
Costs build up on deals that were never going to complete.
With Plumb you get
Ten specialist disciplines read in parallel, so your team and advisers start resolving risk on day one.
Findings are graded, sourced and linked across disciplines, with the ones that could stop the deal at the top, before you bid.
Put your budget behind the sites that stack up, before costs build on the ones that don’t.
Each risk rated and sourced, with the full reasoning one click away. Filter by severity, discipline or next step, and check any finding against the page it came from.
Plumb recommends how each risk should be resolved and who to instruct. Assign it to the right consultant and track it to close-out, all in one place.
A missing document is a risk you can’t see. Plumb shows on day one what’s missing, what each gap stops you pricing and who to ask, so requests go out before you bid.
An unregistered strip along the northern boundary separates the site from the adopted highway. It creates an access ransom until it is acquired or regularised.
Require the vendor to acquire and register the strip before completion.
Resolves: Access to the adopted highway could be blocked (Critical). Needed before completion.
Agree the transfer with the strip’s registered owner before exchange, and record the outcome here.
Cited in the Phase I report, but not in the data room. Ground abnormals can’t be priced without it.
Please provide the Phase II ground investigation referred to in section 6 of the Phase I report.
Illustrative project. Results open as a live web page in your browser, with nothing to install.
See it on a site you know. We’ll reply within one working day.
Illustrative sample sites.
Data rooms hold some of the most sensitive information in a deal. Your documents are used for your projects and nothing else.
Each client’s data rooms are kept to that client. They are never pooled or shared, never used to train AI, and deleted when you ask, whether a deal completes or falls away.
Certification in progress
Data rooms kept to the client who uploaded them
Contractually excluded with our AI provider
In line with the RICS standard on responsible AI
Plumb is AI-assisted pre-acquisition due diligence for commercial property investors and developers. It reads every document in a deal’s data room (the planning, title, environmental and technical material a buyer is working from) and turns them into one structured, cited view, so you know the ground before you bid.
No. It gives them a sourced starting point, so their time goes on solving problems. You can assign each risk to the right adviser and track it to close-out.
Accurate enough to catch what the experts miss. On many of our clients’ test deals, Plumb has found real issues that the consultant team missed. And you never have to take its word for it: every finding links to the page it came from, so your team can check it in a click, and you can edit, re-grade or dismiss any finding.
A general assistant answers the question you ask, from as much of the data room as fits in its context window, and it won’t tell you what it left out. Plumb is built for this one job. It reads every page of every document and never skips content. It tells you what the data room doesn’t contain, not just what it does. Its specialist agents, one per discipline, are tuned to challenge and stress-test each other’s findings, so contradictions surface instead of being smoothed over. Every risk traces through its reasoning to the source documents and pages. And behind every report is a company accountable for it, not a chat window.
Ten disciplines, each with its own specialist workflow: planning; title and legal; environmental, including contamination and ecology; flood risk and drainage; ground conditions; transport and highways; utilities; biodiversity net gain; commercial and valuation; and measured survey. Plumb checks the documents against each other and flags where they conflict.
They are used only for your projects and never pooled or shared. Our AI provider is contractually prohibited from training on them, and we delete your data on request.
We’ll reply within one working day and walk you through Plumb on a site you know.
Yes. Start with a three-run pilot: use Plumb on three live data rooms of your choice and compare it against your current process. Ask about a three-run pilot.
For a specific report, read our due diligence guides: walkthroughs of the planning permission, title register, flood risk assessment, contamination reports, ecological appraisal, biodiversity net gain metric, ground investigation report, measured building survey and transport assessment you will find in a data room.
Book a demo and we’ll walk you through the risk register, next steps and gap register. We reply within one working day.
Three fields. We’ll reply within one working day to arrange a session on a site you know.