Contract administration, without the contract administrator price.
BuildFlow runs the payment cycle on £50k–£5m projects: applications in, line-by-line certification, retention and variations tracked, documents and messages in one place. You stay in control of every pound certified; your contractors use it free.
£90/month per PM. Unlimited projects and contractors. 14-day free trial, cancel anytime.
The features, properly shown
Certification, retention, variations, document revisions and project messaging on a live London project.
One payment cycle, no spreadsheet
The monthly ritual that eats a day of emails, Excel and PDF markups becomes four steps in one system.
Application
Your contractor submits a valuation against the agreed bill of quantities, from the free portal or their phone.
Review
You see exactly what's claimed against every line, with what was previously certified alongside.
Certification
Certify line by line. Revise any quantity with a reason the contractor sees, so disagreements happen before the payment, not after.
Payment
Payment due is calculated with retention and CIS handled. Mark it paid and the linked invoice updates itself.
Everything a contract administrator would do
Valuations & certification
The full application-to-certificate workflow: draft, submitted, under review, certified, paid. Every figure traced to a BoQ line, every revision reasoned.
Retention, done properly
Per sub-contract retention (0–15%) on certified works. 50% releases at practical completion, 50% at end of defects, and BuildFlow tracks who is owed what until you release it.
Variations with an audit trail
Instruct, price and approve variations in one place. The contract sum adjusts itself and nothing gets certified against a variation that wasn't approved.
Documents, shared and stored
50 GB of project documents with contractor sharing built in. New drawing revisions supersede old ones automatically, with an AI summary of what changed and an overlay compare.
Project messaging
One message board per project with read receipts. Decisions live next to the contract, not in a WhatsApp thread you can't produce in adjudication.
Invoices & CIS
Invoices link to certified valuations, CIS deductions are calculated per contractor, and cross-project financial reporting comes as standard.
Portfolio view
Every live project on one dashboard and one map: certified to date, outstanding, retention held, next payment dates. Built for developers running several schemes at once.
AI project setup
Upload drawings and a scope, and BuildFlow drafts the project and bill of quantities for you, with section headings, quantities and per-line VAT.
Your contractors will actually use it
Contractors pay nothing to work on your projects: applications, documents, messages and payment visibility are free for them, forever. And when a contractor quotes you through BuildFlow's Quote Builder, the quote lands straight in your dashboard, ready to become a contract.
£90 a month. A QS day rate is more.
Unlimited projects, unlimited contractors, full payment discipline. See pricing for the detail.
Quoting rather than running projects? See Quote Builder for contractors →