For building surveyors
A clearer way to compare tender returns
Produce the comparison, then run the contract from the same figures: variations, valuations, and interim certificates. No second spreadsheet.
First tender free, then £35 per tender.
No email, no card. Nothing to cancel.
Tender Analysis — Comparison
Hartwell House, Brackley · 3 returns compared · ref 290741 Issue 01
Lowest
£128,500
Highest
£134,900
Spread
5.0%
Item
Hendersons
Crestview
Albion M&E
1. Preliminary works
1.1 Site clearance and protection
£1,800
£2,100
£2,050
1.2 Temporary hoarding
£3,400
£3,200
£5,800Albion M&E priced 71% above median
2. Structural repairs
2.1 Replace damaged lintels
£6,900Hendersons priced 58% above median
£4,100
£4,350
2.2 Repair cracked render — north face
£2,200
£2,400
£2,100
Flagged for your review — not a recommendation
Download PDF →
The problem
Not every contractor sends a spreadsheet.
Send one Schedule of Works to three contractors and three different things come back. A spreadsheet with the columns rearranged. A PDF from an estimating system. A photograph of a printout, priced in biro. Same job, three layouts, three readings of your line items.
Tendermark takes all three and levels them into one like-for-like comparison against your Schedule of Works. Every figure stays traceable to the document it came from. Unusual spreads and missing prices are flagged for your review, never smoothed over. You always make the call.
How it works
Two jobs, one tool. Run the tender, then administer the contract.
Compare the returns and award the work. Then keep going in the same place, with the same figures and one audit trail, all the way to the final certificate.
Run the tender
Author or upload your Schedule of Works
Compose a Schedule of Works directly in Tendermark, or upload your existing Excel, PDF, or Word document. Line items are processed and structured automatically, with sectioning, units, and notes preserved. Drag-and-drop reordering, Excel paste, and bulk edit are built in. Most surveyors author rather than upload, and the editor is built for that.
Schedule of Works
Hartwell House, Brackley · ref 290741
Description
Type
A. Preliminary works
B. Structural repairs
C. Roofing
8 items · 6 priceable · 1 provisional excluded
Invite contractors to price
Send each contractor a unique link from the tool. They open it from their email inbox, and price each of your SoW line items directly. No account, no software download, no spreadsheet to format. Progress saves automatically; they can return and edit until they submit. Returns land in Tendermark as they come in, ready to compare.
Contractors who prefer to can still send files. Tendermark accepts Excel, PDF, Word, scanned documents, and phone photos. The invitation link is the easier path for most; the upload path is there for the ones who need it.
Tendermark · Invitation to price
Hartwell House
Brackley · Hadley & Partners LLP
Due 14 Jun 2026A. Preliminary works
A1Site clearance and protection
£1,800
A2Temporary hoarding (10m run)
£3,200
B. Structural repairs
B1Replace damaged lintels (6 no.)
B2Repair cracked render — north face
2 of 4 items · £5,000 so far
Review the comparison and issue the report
Tendermark builds the comparison table as each return lands. Anomalies such as unusual price spreads, missing items, or lump-sum line items hiding detail are flagged for the surveyor's review. The surveyor decides what to do about each; Tendermark surfaces them and tracks the decision in the audit trail.
When the analysis is ready, the report exports with your firm's branding: PDF for client emails, Word for further editing, or a read-only share link for colleagues.
Hadley & Partners LLP
Chartered Building Surveyors
Tender Analysis Report — Hartwell House
ref 290741 · Issue 01
Summary
Three tenders were returned for Hartwell House, ranging from £128,500 to £134,900 — a spread of 5.0%. Two items are flagged for the surveyor's review: temporary hoarding priced significantly above median by Albion M&E, and damaged lintels priced above median by Hendersons.
Tender submissions
Prepared by Hadley & Partners LLP · Assisted by Tendermark
Award the contract
When the surveyor decides on a contractor, Tendermark records the award and locks the priced Schedule of Works as the contract sum. The award decision is captured in the audit trail with the surveyor's reasoning, useful if a client or RICS Regulation asks how the contractor was selected at a later date. The unsuccessful contractors are sent an automated notification. The appointment letter and contract sit alongside, ready for the JCT handoff.
Tender Award — Hartwell House
Brackley · ref 290741
Appointed contractor
Hendersons
Contract sum
£128,500
Awarded
15 May 2026
Runners-up
Crestview
£131,200
Albion M&E
£134,900
Award decision recorded in audit trail
Appointment notification sent
Unsuccessful notifications sent (2)
Administer the contract
Manage variations against the contract sum
When a variation is priced, whether an addition, an omission, or a change in spec, Tendermark sits it against the original contract sum and flags it for the surveyor's review. The surveyor decides what's reasonable; Tendermark surfaces what's changed and tracks the running total.
Each variation becomes a record in the audit trail, attached to the contract, with the surveyor's notes alongside. At a later date, when a client asks how a figure was arrived at, the trail is there.
Variations — Hartwell House
Contract sum: £128,500 · ref 290741
Description
Type
Value
Original sum
£128,500
Net variations
+£4,050
Adjusted sum
£132,550
Flagged for your review — not a recommendation
Track progress with interim valuations
At each interim valuation, Tendermark builds a burn-up progress chart from the line-item progress the surveyor records: work completed against work contracted.
You still author the valuation, but Tendermark assembles the numbers and builds the progress chart.
Working to a JCT payment timetable? Use the free JCT payment date calculator — due date, notice deadlines and final date for payment, with bank holidays handled.
Completion burn-up — valuation 4 of 6
Certified value as a proportion of the contract sum, against the proportion of the contract period elapsed. Not a forecast.
See it for yourself on a tender we have prepared. Three contractor returns priced against one Schedule of Works, one of them a photograph of a printout priced by hand. Check any figure against the document it came from.
No email, no card. Nothing to cancel.
RICS AI Standard
A compliance pack for your firm, and an audit trail on every tender.
From 9 March 2026, the RICS professional standard on AI requires you to run due diligence on your tools, keep a risk register, and tell clients in writing when AI is involved. Tendermark gives you what you need for each: a plain-English account of how it works and handles your data for your due diligence, a risk register template to complete, and client disclosure wording for your engagement terms. Every tender then keeps a timestamped audit trail, and you stay the decision-maker on every figure.
How Tendermark works
Plain-English explanation of what the AI does and doesn't do — suitable for due diligence records and your firm's AI risk register.
Risk register template
Pre-populated for Tendermark use. Covers failure modes, data handling, and surveyor oversight obligations. Fields left for your firm to complete.
Terms of engagement language
Standard client disclosure text, ready to copy into your engagement terms.
Audit trail on every tender
Every contractor submission and report generation is timestamped and attributable — supporting RICS audit trail expectations.
Free. No sign-up required.
Pricing
Pay per tender, or annually as a team.
No subscription, and nothing to pay until a comparison is in front of you.
Pay per tender
£35per tender
Your first one is free. No card to start.
Annual plan
One invoicea year
For teams. No limit on organisation members.
Questions
Before you decide.
How is this different from survey report-writing software?
Different part of the job. Report-writing tools help you produce a condition or defect report from an inspection. Tendermark starts after the specification is written: it takes the priced returns from contractors, levels them against your Schedule of Works, and then carries the same figures through variations, valuations and certificates once the contract is let.
What does it cost?
Your first tender is free. After that it is £35 per tender, with no subscription and no card required to start. Founding members receive five free tenders instead of one, and Pricing Commons free for life. Estates teams and larger firms can move to an annual plan instead: one invoice a year against a purchase order, a yearly tender allowance, and no limit on organisation members. A tender counts against an annual allowance when its second contractor return is processed. See pricing.
Can I try it before paying?
Yes, two ways. The interactive demo runs on a tender we have prepared, with three contractor returns priced against one Schedule of Works, and needs no email and no card. Or run your own first tender free.
What happens if the tool reads a figure wrong?
You catch it, because every figure stays linked to the document it came from and you can check it in a click. Tendermark surfaces and defers: it flags unusual spreads, missing items and lump sums that may be hiding detail, and it never decides anything. Anything it cannot read confidently is flagged for your review rather than guessed at. The comparison is your professional output and the judgement in it is yours.
Do contractors need an account or software?
No. Each contractor gets a unique link, opens it from their email, and prices your line items directly. No account, no download, nothing to install. Contractors who would rather send a file still can, in any format.
What happens to my data, and is it used to train an AI model?
No, it is not used to train any model. Under Anthropic's commercial API terms, the content we send for extraction is not used to train their models, and we do not use your tender content to train anything of our own.
You are the controller of the tender content you upload and we act as your processor for it; we are the controller only for your own account details. Your data is stored in the EU, and where a supplier processes it outside the UK we rely on the UK Addendum to the EU Standard Contractual Clauses, or the UK extension to the EU–US Data Privacy Framework where that supplier is certified. Our sub-processors are listed in the DPA, and we give 14 days' notice before adding one, which you can object to.
You can export everything you put in, as PDF, Word and Excel, at any time. Retention periods and deletion are set out in full in the Privacy Policy and the Data Processing Agreement.
Is Tendermark RICS compliant?
No software is. RICS does not certify tools, and the obligations under the professional standard on responsible use of AI attach to you and to your firm, not to the products you use. What Tendermark does is give you what you need to meet them: a plain-English account of how the tool works for your due diligence records, a risk register template, client disclosure wording for your engagement terms, and a timestamped audit trail on every tender.
The standard also expects you to request information from suppliers in writing and keep a record of what you were told, so if your firm sends us a due diligence request we will answer it in writing. We are not affiliated with or endorsed by RICS. See the compliance pack.
What if a contractor sends back a scan, or a photo of a printout?
That is the normal case rather than the exception. Spreadsheets, PDFs, Word documents, scans and phone photographs all go through the same pipeline and land against your Schedule of Works line items.
Do I have to use it for the whole contract, or can I just run the tender?
Just the tender is fine. You pay per tender, and the contract administration side is there if you want it.
Start your first tender free.
No subscription required, no card to start. Your first tender comparison is free. Pay £35 only when you process a second.
Pay per tender. No subscription required.
No email, no card. Nothing to cancel.
Joining early? See the founding member offer →




