Step 4 of 15 · Supply chain
Let the work out and pay for it
Subcontractor management software has to answer two questions off the same record, who is allowed on site and what they quoted, so Estimark keeps an approved list of trades beside a numbered enquiry. You write the scope once as line items, invite the subcontractors you want on it, and read their prices back side by side with the lowest one flagged. Accepting one declines the rest and drops the accepted figure onto the quote it was priced for. Payment runs the other way: a subcontractor’s invoice carries the CIS deduction covered later in this tour, and a payment notice or pay less notice recorded against it is stored with its sum, its basis of calculation and the dates it was measured against.

- 01
How do you get three subbies to price the same thing?
By writing the scope once and sending all of them at it. An enquiry gets its own reference, a title, a date you need it back by and the scope as line items, each with a quantity and a unit. You then invite subcontractors onto it, and every one of them prices that same list rather than replying in whatever shape suits them. The responses come back as a card each, ordered with the ones who have answered at the top, cheapest first, and the lowest price carries a label. Accepting one marks it accepted, declines every other invitation and closes the enquiry, and where the enquiry was raised against a quote the accepted figure lands on that quote as a subcontract line noting the enquiry it came from.
- 02
What does a subcontractor see when you invite them?
A page of their own at a link of its own, with no account to create. It shows your company name, the reference and title of the enquiry, the date you want it back, your description, and the scope as a table headed Scope of Works. They put a unit price against each line, the line total comes off your quantity so the arithmetic is the same for everyone, and a running total adds up underneath. They can leave a note, submit, and come back and reprice while the enquiry is still open. Declining takes them off the list without a phone call. They never see another subcontractor’s price.
- 03
How do you keep an approved list rather than a phone full of numbers?
On the approved trades screen. Each subcontractor is a card with their trade, their town, a rating out of five you set yourself and a note for how the last job went. One button approves or unapproves them, and the date of the first approval is kept on the record. You can filter to a single trade, search by name, and flip between the approved list and everyone on file. Accreditation numbers for Gas Safe, NICEIC, NAPIT, CHAS and Constructionline sit on the subcontractor’s own page, each with a link out to that scheme’s public register, so a number can be checked against the body that issued it rather than taken on trust.
- 04
Who is watching the deadline on a notice to a subcontractor?
Estimark is. Each subcontractor invoice has a payment due date, and Estimark works three more dates off it: the final date for payment, the last day a payment notice could be served and the last day a pay less notice could be. The defaults are the ones in the Scheme for Construction Contracts, which stands in where the subcontract itself says nothing, and they are written onto the notice when you record it rather than recalculated afterwards. The notified sum and the basis of calculation are stored with them, and the basis cannot be left blank. Unpaid subcontractor invoices are listed nearest deadline first with the days left on each, negative where the day has gone. Recording one late is allowed and stamped as late, because the record of having served it still counts even where the notice itself no longer bites.
- 05
Where do suppliers and purchase orders sit in this?
In a register beside the subcontractors, one row per supplier with its contacts, an account reference, payment terms in days, a category and an approval flag. Every purchase order raised against a supplier is listed on that supplier’s page with its number, its stage and its total, so a conversation about a late delivery starts from the orders rather than from memory. Those same orders are the committed cost that lands in job costing the day the order goes out, which is the control step later in this tour.
- Enquiries
- One scope, several subbies, prices side by side
- Approved list
- Trade, rating out of five, date approved
- Notices
- Notified sum, basis and dates stored per notice
What this step does not do
- Inviting a subcontractor mints their portal link, and nothing sends it. The link is not on the enquiry screen either, so today the office records a price it was given over the phone against the invitation instead.
- A subcontractor invoice and the notices served against it are recorded through the API. Neither has a screen yet, so this part is reachable by an integration rather than by clicking, and recording a notice does not send it to the subcontractor.
- Notice dates default to the Scheme for Construction Contracts. Entering your own subcontract’s payment terms in place of those defaults is not there yet.
- Approval is a record rather than a lock. Estimark keeps the approved list and the date, and nothing stops an unapproved subcontractor being invited to price work or put on a job.
- A subcontractor’s accreditation numbers are held with a link out to each register. Their public liability policy and its expiry date cannot be tracked against them, because the insurance register records your own policies.
- Searching a merchant’s trade catalogue and pulling a product into the price book is built for Travis Perkins and Buildbase and needs a trade API account from the merchant. No key ships with Estimark, so that search returns nothing until one is configured.
Questions
Supply chain, frequently asked
Does a subcontractor need a login to quote for work?
No. Each invitation has a link of its own, and the page behind it shows your company name, the enquiry, the date you want it back and the scope as a table. They price each line, leave a note if they want to, and submit or decline. There is no account to create and they never see another subcontractor’s price.
What happens to the winning price once you accept it?
Accepting an invitation marks it accepted, declines every other invitation on the enquiry and closes it. Where the enquiry was raised against a quote, the accepted figure lands on that quote as a subcontract line noting the enquiry it came from.
A site diary is the dated record of what happened on a job each day, and Estimark keeps one per job covering the workforce on site, the weather, progress, deliveries, instructions received and delays.
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Estimating · Jobs · Invoicing · CIS · H&S · Reactive maintenance