Construction payments, without the enterprise price tag.
Built for developers and main contractors running £50k–£5m projects. Track valuations, certify applications and manage retention for a fraction of what Procore or Buildertrend charge.
£90/month per PM. 14-day free trial, cancel anytime.
The problem
Spreadsheets weren't built for construction payments
You're too big for a shared spreadsheet and too small for a system priced around volume housebuilders. That gap is where most developers and main contractors on £50k–£5m schemes get stuck.
Scattered invoices
Invoices buried in email. Payment status tracked in your head. Contractors chasing you for updates.
Manual valuations
Percentage complete on paper. Retention by hand. One mistake compounds across every payment.
Zero visibility
No single view of costs. Budget vs actual is a mystery until it's too late.
One missed notice. One expensive mistake.
The Construction Act requires payment and pay-less notices within strict windows. Miss a deadline and the contractor can claim the full applied sum.
Who it's for
Built for the people who actually run small projects
One platform, both sides of the contract: whoever certifies payment and whoever gets paid.
Developers
Residential and mixed-use developers running anything from a single refurb to a multi-unit scheme. Portfolio-level oversight of every valuation, retention and variation, with reporting your funders will actually trust.
Project managers
PMs and employer's agents administering contracts on a client's behalf. Certify applications against the BoQ, keep an audit trail, and never miss a Construction Act payment or pay-less notice window.
Architects
Architects administering JCT Minor Works, Intermediate or Design & Build contracts. Run valuations, certificates and variations properly without buying enterprise software for a handful of live jobs.
Contractors quoting for work
Builders who want to quote faster and win more. Quote Builder AI turns a client's drawings into a bill of quantities in minutes; add your rates and send a branded PDF the same day.
Contractors managing subcontractors
Main contractors running their own subcontract chain. Collect applications from your subbies, certify with confidence, and track retention and CIS deductions down the chain.
How it works
Four steps to controlled project payments
Set up your project
Add contractors and BoQs. Upload contracts and AI extracts key terms.
Contractors submit valuations
Percentage complete per line item, invoice attached. You get notified.
Review and certify
Adjust claimed figures. Certify. Payment certificate auto-generates. Deadline tracking keeps you within your Construction Act notice windows.
Track payments
Mark paid, contractors notified. Retention tracked to release.
Set up your project
Add contractors and BoQs. Upload contracts and AI extracts key terms.
Contractors submit valuations
Percentage complete per line item, invoice attached. You get notified.
Review and certify
Adjust claimed figures. Certify. Payment certificate auto-generates. Deadline tracking keeps you within your Construction Act notice windows.
Track payments
Mark paid, contractors notified. Retention tracked to release.
Features
Everything you need to manage construction payments
See every project at a glance
Map view, financial aggregation, and project cards give you full visibility across your portfolio.
- Multi-project overview
- Real-time financial totals
- Geographic map view
Contractors submit, you certify
Claimed vs certified comparison with full audit trail. No more email chains.
- BoQ progress input per line
- Side-by-side review
- Complete audit trail
Central hub for all invoices
AI reads invoices, extracts key data, and tracks status from received through to paid.
- Auto-extraction of invoice data
- Status workflow tracking
- PDF preview and download
Never miscalculate retention
Per-contract retention with automatic calculation and scheduled releases.
- Configurable retention percentage
- 50/50 PC and defects release
- Full release schedule view
Let AI do the data entry
Upload contracts and invoices. AI extracts terms, payment schedules, and line items.
- Pre-fills forms automatically
- Confidence scoring on extractions
- Graceful fallback to manual
Their own dashboard
Contractors get a simple interface to submit valuations and track payment status.
- Simple, focused interface
- Real-time payment status
- Payment acknowledgement
Built for UK Construction Law
BuildFlow tracks your Construction Act payment notice and pay-less notice deadlines automatically, keeping you compliant with the Housing Grants, Construction and Regeneration Act 1996 (as amended 2011) on every project.
See it in action
One London project, end to end: set-up, application for payment, certification and portfolio tracking.
Real Projects
Built on real London sites
Four projects, four ways of working: lofts, refurbishments, extensions and basements, all administered end to end on BuildFlow.
Mobile
BuildFlow on the go
The contractor portal in your pocket. Submit valuations from the site, capture progress photos, and get notified the moment a payment is certified.
Submit valuations from the site
Mark up the BoQ, add comments, and submit a valuation in minutes from your phone. No more end-of-week paperwork.
Capture progress and snags
Take photos of completed works or defects, attach them to the relevant line item, and keep a clean visual record of every claim.
Push notifications
Know the moment a payment is certified, a variation is approved, or a contractor needs your input.
Pricing
One plan. Everything included.
14-day free trial. Cancel before it ends and pay nothing.
All prices exclude VAT.
Professional
The whole platform, per project manager
Unlimited projects and contractors. Each PM on your team has their own account. No feature tiers, no upgrade ladder.
- Unlimited active projects
- Unlimited contractors, free for them
- Valuation certification & payment certificates
- Construction Act notice deadline tracking
- Retention & CIS tracking
- Variation log & approval
- Portfolio financial dashboard
- AI document & contract extraction
- Custom branding on contractor portal
- Document storage (50 GB)
Quote Builder AI
Quote faster. Win more work.
An optional tool for contractors' own quoting, on any job for any client. Working on a BuildFlow project is always free.
- Turn drawings into a bill of quantities with AI
- Price lines with your own rates & margins
- Send branded PDF quotes with share links
- Client comments & quote tracking
- First 2 AI-assisted quotes free
Free to start. No PM invite needed.
Enterprise
For volume builders and firms with bespoke needs
Tailored workflows, compliance and reporting. White-label portal, API access, and dedicated support.
- Everything in Professional
- White-label contractor portal
- API access & SSO
- Xero / Sage / QuickBooks integration
- Dedicated account manager
- SLA with guaranteed response times
All plans include: bank-grade encryption, UK data residency, free contractor portal access.
Contractors never pay to work with you. Quote Builder AI is a pay-as-you-go add-on for contractors' own quoting (2 free, then £12 per AI quote), billed to them and never to your account.
How BuildFlow compares
| Feature | Spreadsheets | Procore | Payapps | BuildFlow |
|---|---|---|---|---|
| Price/month | Free | £500+ | Enterprise | £90/PM |
| Setup time | N/A | Weeks | Days | 30 mins |
| UK Construction Act | Partial | |||
| AI processing | ||||
| Contractor portal | ||||
| Retention mgmt | Partial | |||
| Certification | ||||
| Certificates | ||||
| AI contractor quote builder |
Less admin time
To submit a valuation
Payment status tracking
“BuildFlow cut our monthly payment admin in half. We used to spend days reconciling spreadsheets.”
James P.
Residential Developer
6-unit scheme, South London
“Our contractors love the portal. No more chasing invoices or asking where their payment is.”
Sarah K.
Project Manager, Mitchell Construction
3 active projects
“The retention tracking alone is worth it. We always know exactly what's held and when it's due.”
Mark T.
Property Developer
Rear extension, North London
Frequently asked questions
Under 30 minutes. Add your project details, upload contracts, and our AI extracts the key terms automatically. You can be running your first valuation the same day.
The contractor portal is deliberately simple: log in, enter percentage complete, upload an invoice. That's it. If they really can't manage, you can enter valuations on their behalf.
Yes. All data is encrypted in transit and at rest. Hosted on UK servers with row-level security ensuring users only see their own data.
Absolutely. During setup you enter the current cumulative position for each contractor. BuildFlow picks up from there with no disruption.
Yes. BuildFlow is designed for UK construction workflows including JCT Minor Works, Intermediate, and Design & Build.
Yes. BuildFlow automatically tracks the payment notice and pay-less notice deadlines required under the Housing Grants, Construction and Regeneration Act 1996 (as amended). You'll receive alerts before each deadline so you never accidentally create an undisputable payment obligation.
You get full access for 14 days. A card is required to activate the trial and is charged when it ends unless you cancel first — cancelling takes one click from Settings. Your data is never deleted either way, so you can come back any time and pick up where you left off.
£90 per project manager per month (or £900/year, saving 17%), with unlimited projects and unlimited contractors. There are no feature tiers: every PM account includes the whole platform. Contractors you invite never pay.
BuildFlow is built for the gap between spreadsheets and enterprise systems: developers and main contractors running £50k–£5m schemes. Procore prices on annual construction volume and typically starts in the £10-20k/year range, aimed at businesses delivering far higher volumes. If that's not you, BuildFlow gives you the same payment discipline for a fraction of the cost.
No. Submitting valuations, uploading documents, messaging you and tracking payment status is free for every contractor you invite, always. Quote Builder AI, which turns a contractor's own drawings into a priced quote for any client, is pay-as-you-go for their own business (2 free, then £12 per AI quote). It's billed to them, not to you, and never required to work with you.
Stop chasing payments. Start managing them.
Join UK developers and main contractors running £50k–£5m projects who've moved beyond spreadsheets, without paying Procore prices.
Start Your Free Trial£90/month per PM. 14-day free trial, cancel anytime.