For subcontractors

The monthly application, minus the spreadsheet.

A subcontractor's key to compliant, professional and effortless applications.

Enter percentage complete once. SubbyApps recalculates cumulative claim, retention and nett amount — then generates a submission-ready PDF, every valuation date.

Works with:JCTNEC3 / NEC4RIBABespoke subcontracts

Application No. 4

Riverside Works — Block C

30 Sep 2026
Item%Claim
Facilitating Works%£5,000.00
Groundworks & Drainage0%£0.00
Drag to try it
Apartment fit-out
Apartment 1st Fix£8,400.00
Apartment 2nd Fix£0.00
Apartment Final Fix£0.00
Sub Total£13,400.00
Retention @ 3%−£402.00
Nett Amount£12,998.00
Designers/Groundworkers/Scaffolders/Builders/Bricklayers/Roofers/Mechanical/Electrical/Plumbers/Joiners/Plasterers/Painters & Decorators/Designers/Groundworkers/Scaffolders/Builders/Bricklayers/Roofers/Mechanical/Electrical/Plumbers/Joiners/Plasterers/Painters & Decorators/

Every trade on site

Whatever your trade, it's the same application.

Pick a trade to see how its work looks as a line item — the same value, percentage and claim maths behind every application on SubbyApps.

Groundworkers

Example line item

Item%Claim
Groundworks & Drainage78%£32,760.00
Value (gross)£42,000.00

The problem

Right now, that application lives in six places.

A spreadsheet per subcontractor. A photo of a hand-filled form sent over WhatsApp. Retention recalculated by hand, again. Nobody is sure which file is the real one — and the valuation date doesn't wait.

Application_v2_FINAL.xlsx
IMG_4471.jpg — % complete, texted
Retention — recalc??
Application_v3_FINAL_FINAL.xlsx

One application. One place it lives.

The monthly cycle

Same four steps, every valuation date.

1 / 4

Project set up

SubbyApps will tailor your application to suit your needs and contract requirements.

2 / 4

% entered

Each subcontractor's team logs how much of their own work is complete this period.

3 / 4

Numbers recalculate

Cumulative claim, retention and nett amount update instantly — no formulas to check.

4 / 4

PDF generated

A submission-ready application is produced automatically, branded and ready to send.

Built for the real hierarchy

Every account sees exactly what it should.

RoleScopeSets up projectsEdits line itemsCreates variationsEnters % completeDownloads applications
Company AdminTheir own company's projectsYesYesYesYesYes
Company AccountsTheir own company's projects————Yes
UserProjects they're assigned to———YesYes
Quantity Surveyor / Project ManagerProjects they're assigned to——YesYesYes

What it does

Everything the application needs, nothing it doesn't.

Recurring valuation dates

Monthly, weekly, biweekly, or ad hoc — the next application date is worked out for you.

Revisions, not overwrites

Re-issue an application within the same period without losing the original submission.

Retention handled

Set the percentage once. Every application applies it correctly, every time.

Branded PDF output

Your company logo and bank details, laid out to match the paperwork you already submit.

One place, not a shared inbox

Every application lives against your project — never buried in someone else's email or a shared spreadsheet.

Scoped access

Staff see only the projects they're assigned to — nothing else.

On the roadmap

Coming soon

VAT, CIS and tax — presented correctly, not worked out by hand.

We're building CIS deduction and VAT handling directly into every application, so a subcontractor's paperwork is compliant by default rather than something bolted on afterwards.

CIS deductions, shown automatically

The correct Construction Industry Scheme deduction calculated and broken out on every application — not worked out separately and pasted in.

VAT treatment per application

Standard rate, zero-rated or the domestic reverse charge — set once per project, applied consistently every time.

One document, one number

Gross claim, CIS deduction, VAT and nett payable, all on the same PDF a main contractor already receives.

Contact us

Questions before you sign in?

Send us a message and we'll get back to you, or email us directly at info@subbyapps.co.uk.

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