Plumb - Know the site before you bid

01 / The problem

Today you choose: speed or certainty.

A bid lands and the clock starts. You can move quickly and risk missing something, or spend the weeks it takes to understand the site properly, by which time a seller with options has gone with whoever committed first.

A.

Deals are taking longer

Document sets get bigger, reviews get slower, and the deal cools while you wait. Terms drift, competitors move, boards lose conviction. Time kills deals - and diligence is where the time goes.

B.

Consultants multiply, certainty doesn't

Planning, title, environmental, transport - each its own consultancy line with its own scope, timeline and invoice. Managing the panel is a job in itself, and hand-stitching their outputs is where the errors live.

C.

Sellers reward speed

Competitive processes favour pace and certainty. A seller with options does not wait for your third consultant's report - the bidder who can commit early, with evidence, sets the terms.

02 / What Plumb does

Plumb removes the trade-off.

Data room in, one clear risk position out. Plumb reads the deal's data room - every planning pack, title deed, report and survey - and scores each risk it finds across ten diligence disciplines. The judgement stays yours; the reading, structuring and citing is Plumb's.

Faster

Hours, not weeks. Plumb reads the full document set in a single pass while the bid window is still open, so you screen more sites and walk away from the wrong ones before they cost you.

Consistent

Plumb measures every site against the same risk factors on the same severity scale, every time, so two sites in a pipeline are genuinely comparable and nothing rests on who happened to do the reading.

Defensible

Every finding is cited to its source document, or it doesn't go in the register: a planning ref, a title number, a survey figure, each one click from source. When the committee asks how you know, you show them.

03 / How it works

Drop a site. Get the ground truth.

Drop in the deal

The data room, as it arrived

Planning packs, title deeds, environmental reports, technical surveys - hundreds of documents in whatever shape the seller sent them. No preparation, no templates, no waiting on a scope of work.

Plumb reads the ground

Ten disciplines, one pass

Specialist readers work planning, title and legal, environmental, flood, ground conditions, transport, utilities, biodiversity net gain, commercial and measured survey in parallel - every finding extracted with the page it came from, and every risk cross-referenced against every discipline it touches, so nothing is missed between disciplines. What takes a consultant panel weeks happens in hours, with no panel to manage.

You get a pre-bid view

A risk position you can act on

Plumb levels constraints, severities and open deal-breakers into one ranked risk register with the evidence attached, sets out an instruction set saying who to point at what first, and adds the enquiries that still need answers from the seller: a live, prioritised path to a bid you can price with confidence. Take it into committee, or walk away early - both are wins when you know the ground before you commit.

The pre-bid view does not retire when the bid succeeds: as the deal progresses, Plumb carries the same risks, constraints, decisions and actions forward into programme, procurement, design and reporting. It starts pre-bid, and it stays with the deal.

04 / Proof

Found on first pass.

Plumb 1.0 is live on real deals, where manual review misses things both within specialties and between them. These two findings came out of live data rooms.

MISSED ACROSS THE PANEL

The contradiction buried in condition 15

The data room held an approved highway plan, but planning condition 15 required a separate approval from the highway authority, and that approval was still outstanding. The entire consultant team read past it; Plumb flagged the contradiction on first pass. Left unresolved, an approval like that can take up to twelve months.

Flagged by Plumb · first pass

LOST BETWEEN DISCIPLINES

The ransom strip lost in a handover

The solicitor flagged the unregistered strip early, but the point never reached civils or utilities, whose designs routed the rising main and power connection straight across it, committing the scheme to a costly workaround. Plumb checks every risk against every discipline it touches, so a finding made in one report cannot be lost on its way to another.

Connected by Plumb

05 / Who it's for

Built for the people on the hook for the bid.

LAND

Acquisition teams

Screen more sites in the window you have, and walk away from the wrong ones sooner.

CAPITAL

Investment analysts

Take a defensible pre-bid view into committee, with the working attached.

BUILD

Developers

Surface planning and infrastructure constraints before they price into the deal.

FUND

Asset managers

Compare schemes across a pipeline on a consistent, repeatable basis.

Aerial photograph of a UK logistics estate, printed in graphite duotone — AERIAL SURVEY · UK LOGISTICS ESTATEEXHIBIT 01

06 / Founders

Operator insight, technical capability.

Plumb is built by the two people the problem belongs to: one from the buy side of UK industrial & logistics, one from engineering leadership.

Henry Boddy

Domain expert & commercial lead

A chartered surveyor (MRICS) who led industrial & logistics site acquisitions in private equity real estate.

Stefan Marjanovic

Experienced technical lead

A technical leader with nine years across consulting and UK startups, who built Plumb’s multi-agent architecture.

07 / Questions

Common questions.

Q.01

What is Plumb?

Plumb is an AI-assisted pre-bid due diligence platform for UK industrial and logistics property. It reads the documents 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 can establish ground truth before you bid.

Q.02

What does Plumb assess on a site?

Plumb reviews a site across ten diligence disciplines in parallel: planning; title and legal; environmental, covering contamination and ecology; flood risk and drainage; geotechnical and ground conditions; transport and highways; utilities; biodiversity net gain (BNG); commercial and valuation; and measured survey and area schedule. Every finding is recorded with a citation back to the source document it came from.

Q.03

What does Plumb produce?

Three things, from one pass over the data room: a ranked risk register with the evidence attached, an instruction set covering who to point at what first (solicitor, engineer, planner), and the vendor enquiries that need answers from the seller. Together they turn slow, sequential diligence into a single, prioritised path to a bid you can stand behind.

Q.04

Does Plumb help with flood risk and ecological reports?

Yes. Plumb has dedicated specialists for flood risk and drainage and for environmental matters, including contamination and ecology, as well as biodiversity net gain. It reads the relevant reports in the data room, sets out what they mean for the bid alongside the other disciplines, and cites every point back to the source document, so the read is easy to defend in committee.

Q.05

How long does a pre-bid assessment take?

Hours, not weeks. Plumb runs the review across all disciplines in a single pass while the bid window is still open, instead of the days of specialist time it takes to stitch the documents together by hand.

Q.06

Who is Plumb for?

The people on the hook for the bid: land and acquisition teams, investment analysts, developers and asset managers acquiring industrial and logistics sites in the UK, along with the consultants they instruct to support a bid.

Q.07

Who is behind Plumb?

Two co-founders: Henry Boddy, a chartered surveyor (MRICS) from private equity real estate, and Stefan Marjanovic, a technical leader who built Plumb’s multi-agent architecture.

Q.08

How is Plumb different from a data room or instructing consultants?

A data room stores the documents; Plumb produces an assessment from them. Set against a full panel of consultants it is faster and much cheaper, it measures every site against the same risk factors so sites are genuinely comparable, and it attaches a citation to every claim (a planning reference, a title point, a survey figure) so nothing is asserted that cannot be shown.

Working through a specific report? Read our pre-bid 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.

Know the ground
before you bid on it.