Run your sites. Not your paperwork.
Progress claims, retention sums, GST-ready invoicing, and per-project visibility — built around the way Singapore construction firms actually work.
Free forever for solo operators. No credit card required.
Built around how you actually work
Progress claims that match the contract
Raise claims at each milestone, with retention sums handled correctly. Status moves from Sent → Approved → Paid without spreadsheet gymnastics.
Retention released, not forgotten
Retention sums sit on a separate receivable so they don't disappear from your books at substantial completion. Release them at the defects period in one click.
One source of truth across sites
Every project's clients, quotations, claims, photos and permits live in one place. PM, accounts and senior management see the same picture.
GST-ready invoicing
9% GST is applied per line, totals are correct to the cent, and every invoice exports as a print-ready PDF for client delivery.
What's in it for construction firms
- Standard form payment claim flow with retention
- Multi-site project tracking with linked clients and quotations
- Variation paperwork kept beside the quote and invoice trail
- Document storage for permits, drawings, RFIs and BCA paperwork
Modern pricing for project teams
Start free, then scale when the team is ready
Choose by project volume, team size, and how much admin you want Zeng Book to carry.
Free needs no credit card. Annual billing saves 20% when you are ready.
Free
Solo operators validating the workflow
For solo operators testing the workflow.
- 1 user
- 3 active projects
- 25 client records
- Quotations & invoices
- Zeng Book branding
- Community support
Starter
Small teams moving off spreadsheets
For small teams moving off spreadsheets.
- 3 users
- 25 active projects
- 500 client records
- Quotations, invoices & documents
- Custom document branding
- Payment tracking
- +1 more included
Growth
Firms running multiple live projects
For firms running multiple live projects.
- Up to 10 users
- Unlimited projects & clients
- 10 GB document storage
- Progress claims & retention
- API access & signed webhooks
- Priority email support
- 200 AI quote extractions / month
Business
Ops-heavy teams that need approvals
For ops-heavy firms that need controls and onboarding.
- Up to 25 users
- 50 GB document storage
- All Growth features
- Quotation approval workflows
- Activity history
- Custom onboarding session
- +2 more included
Need a custom rollout?
Enterprise
Unlimited everything. White-label. SSO. SLA guarantee. Custom onboarding. Dedicated support.
Start small, then upgrade when you need more users, live projects, automation, AI extraction, approvals, or onboarding. All prices are in SGD and include 9% GST.