01
Projects & Sites
Enquiry-to-handover pipeline, live records and portfolio health (RAG).
Aadvika product · Construction ERP · In development
From site diary to GST filing,
one system.
Build OS is the construction ERP built for India — run projects, costs, procurement, subcontractors, billing, payroll and site operations in one place, GST- and statute-ready out of the box.
No spam. We'll reach out when your slot opens — or talk to us now.
Built for firms that run
multiple sites.
Who it's forIndian construction and infrastructure contractors, civil and EPC firms, and real-estate developers — and the subcontractors they work with. Purpose-built for firms that bill on running-account terms, hold retention, and live with PF, ESI, GST and TDS every month. Built alongside Renaud Infra, a working construction firm, so the workflows match real site and back-office practice.
Every desk in the firm,
in one place.
Modules / 1102
Cost & Budget Control
Job P&L, cost-code budget-vs-actual, S-curves and estimate-to-completion.
03
Procurement & Inventory
Indent → PO → GRN, weighted-average stock and 3-way match.
04
Subcontractor & RA Billing
WO → measurement → RA bill, with retention, DLP and RCM.
05
Client Billing & GST
RA and tax invoices, GSTR-1/3B/2B reconciliation, e-invoicing (IRN/QR).
06
Collections & Treasury
Receivables ageing, DSO, credit limits and a 13-week cash-flow forecast.
07
HR & Payroll
Attendance, wage muster, PF/ESI/PT/TDS, Form 16 / 24Q and payslips.
08
Compliance Calendar
Auto-seeded due-dates with penalty-at-risk flags — BOCW cess, CLRA.
09
Field Operations
Daily progress reports (DPR), gate passes, RFIs, quality/safety and plant.
10
Role-based Dashboards
A view tailored to the partner, the accounts desk, ops and the site engineer.
11
Control & Search
Firm-wide alerts, command-palette search and document control.
India-first. Construction-first.
Built alongside a live firm.
Why Build OSIndia-first
Not retrofitted
GST, e-invoicing and RCM, statutory payroll (PF/ESI/PT/TDS, Form 16/24Q), 194Q/194C TDS, BOCW cess and CLRA are built in — not add-ons or consultant customisations.
Construction-first
Not adapted to it
RA billing with retention, subcontractor work orders, cost-code job costing, DPR site diaries, plant tracking, EOT and LD — the way construction firms actually work.
Proven on site
Built alongside Renaud Infra
Designed with a working construction firm, so the workflows match real site and back-office practice — not a template someone hopes fits.
Secure
Enterprise-grade, without the overhead
Data stays in India (DPDP-aware), with passkey sign-in, step-up authentication and a full audit trail — serious security without enterprise cost or complexity.
Role-tailored
Responsive, installable (PWA)
The person on site logs the daily report from the phone in their hand; the partner opens the P&L from the office.
The compliance calendar,
already filled in.
Statute-ready
GSTR-1GSTR-3BGSTR-2B recone-Invoicing (IRN/QR)RCM
PFESIPTTDS 194C/194QGST-TDS
Form 16 / 24QBOCW cessCLRA
Every due-date auto-seeded, every filing flagged with what's at risk if it slips — the obligations that keep a construction CFO up at night, turned into a checklist the system runs for you.
Before you
sign up.
QuestionsWhen does Build OS launch?
It's in active development. Rather than a public launch date, we're onboarding firms in waves of early access — join the waitlist and we'll reach out as slots open, while your feedback still shapes the product.
Who is it for?
Indian construction and infrastructure contractors, civil and EPC firms and real-estate developers — especially those running multiple sites, billing on running-account terms, and managing PF / ESI / GST / TDS every month.
How is it different from SAP, Zoho or a generic ERP?
Those are general systems you bend to fit construction, usually with consultants. Build OS is the opposite: RA billing, retention, subcontractor work orders, cost-code job costing and site diaries are the core — and India's GST, statutory payroll, TDS, BOCW cess and CLRA are built in.
Where does my data live, and is it secure?
Your data stays in India and the platform is DPDP-aware, with passkey sign-in, step-up authentication and a full audit trail.
Early access · In development
Join the early-access waitlist.
Build OS is in active development. Leave your email and we'll invite your firm as early-access slots open — you'll help shape what ships.
No spam — or talk to us now.
↳ GST · e-invoicing · TDS
↳ RA & subcontractor billing
↳ Payroll · PF · ESI · PT
↳ Site diary (DPR) · plant
↳ One system, site to books