Bidfident for land remediation contractors
Estimating software for land remediation
Remediation tenders turn on cubic metres of soil. In Bidfident you price contaminated soil excavation and clean imported fill by the m³, give the 360 excavator and the roller their own hours, and add tank removals by the nr and dewatering as an item. Muck away and validation testing go in as subcontracts, and the site manager and environmental monitoring follow the programme by the week.
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Sound familiar?
Muck away is the biggest number, and the hardest to compare
Carting away and tipping contaminated soil can be most of the job, and the quotes arrive in different shapes. In Bidfident each quote sits side by side, the lowest is flagged and carried, and you can carry an allowance until the quotes are in.
Imported fill without the extra
Clean imported fill always takes more than the hole, and spreadsheets bury the allowance in a formula nobody checks. In Bidfident each line's material has a waste percentage in plain view, so the extra 10% is there for anyone to see.
Monitoring that outlasts the estimate
The dig runs a week longer than the programme, but the environmental monitoring line still shows the old number of weeks. In Bidfident weekly items linked to the job duration follow it, part weeks included.
How Bidfident fits your work
Muck away and testing side by side
Enter each quote for contaminated soil muck away and disposal, and for validation testing. The lowest is flagged and carried unless you pick another.
Excavator and roller at their own hours
Give the excavator its own hours per m³ dug, and the vibrating roller its own hours per m³ placed. Each is charged for the hours it runs.
Site manager and monitoring by the week
Link the site manager and environmental monitoring to the job duration. Stretch the programme from 5 weeks to 5.5 and both follow.
Extra excavation kept as an option
Price a possible extra dig or a third tank as an alternate. It stays on the sheet struck through, with its cost before markups shown beside the totals, and isn't counted in the tender.
The tender total in view as volumes change
Change the cubic metres of soil and the total at the top shows how much it moved, straight away.
Earlier versions of the estimate kept
Volumes change as testing comes back. Compare any saved version with now, and restore an earlier one with a click.
Worked example: remediation of a former petrol station site
A made-up job, priced in Bidfident: 24 lines of your own work, 4 subcontract packages and 6 preliminaries items over a 5-week programme. The 4 lines this page talks about are listed one by one, and the rest are added up in one row. It's the same job you can open as an example project in Bidfident, so every figure below matches it.
To open this job in Bidfident: sign in and set up your company in the UK, then on the Projects screen, under Example project, pick "Demolition and asbestos removal" and "Land remediation" and press Add example project.
| Item | Amount |
|---|---|
Excavate contaminated soil and load, 1,800 m3
| £7,020.00 |
Dewatering and water treatment for the excavation, 1 item
| £6,880.00 |
Remove underground fuel storage tanks, 25,000 litre, 2 nr
| £5,360.00 |
Clean imported granular fill, compacted, 1,800 m3
| £66,780.00 |
20 more lines of your own work
| £44,812.50 |
| Item | Amount |
|---|---|
Muck away, contaminated soil to a licensed soil treatment centre
| £178,400.00 |
Validation sampling and testing
| £5,100.00 |
Surfacing reinstatement, tarmac
| £21,180.00 |
Free product and contaminated water disposal, allowance
| £3,600.00 |
| Item | Amount |
|---|---|
Site manager
| £8,000.00 |
Environmental monitoring
| £5,000.00 |
Contracts manager, part time
| £1,650.00 |
Site cabin and welfare unit
| £880.00 |
Environmental permits and notifications
| £660.00 |
Mobilisation and demobilisation
| £3,580.00 |
| Item | Amount |
|---|---|
Own work
| £130,852.50 |
| Excluded lines, not counted | £3,620.00 |
| Subcontractors | £208,280.00 |
Preliminaries
| £19,770.00 |
Direct cost
| £358,902.50 |
Contingency
| £21,534.15 |
Overheads and profit
| £38,043.67 |
| Subtotal before the bond | £418,480.32 |
Bond
| £6,277.20 |
Insurance
| £6,277.20 |
Tender total
| £431,034.72 |
VAT, for reference
| £86,206.94 |
See it in Bidfident
Coming soon Ask your estimate anything. Claude first, ChatGPT to follow. See how it will work
Questions
Can I price soil by the tonne as well as the cubic metre?
You can use either unit on a line, since units are free text. Bidfident doesn't convert between them, so price each line in the unit its rate is in.
Can I carry muck away before the quotes are in?
Yes. Carry an allowance for the subcontract, then enter the quotes as they come in and carry the lowest or the one you pick.
Can each machine have its own hours?
Yes. Each line's plant can have its own hours per unit. Leave it blank and it runs for the gang's hours.
Can I add a waste allowance to imported fill?
Yes. Each line's material has a waste percentage, and the total includes it.
Can dewatering go in as a single item?
Yes. Use item as the unit with a quantity of 1, and put the hours and materials for dewatering and water treatment on that line.
Does it read quantities from site plans or maps?
No. You enter the volumes yourself, from your own measurements or the site investigation report.
Does Bidfident work with Claude or ChatGPT?
Not yet, but it's coming. You'll be able to connect Bidfident to your own Claude or ChatGPT account and ask about your estimates in plain English. The answers will come from Bidfident's own figures, so they match the estimate. It will use the account you already have: Claude first, ChatGPT to follow.
Price your next remediation tender in Bidfident
Enter your email and Bidfident sends you a sign-in link. New companies start with a starter rate library. Who runs Bidfident, and what it keeps about you.