Sargam Group – Construction ERP Case Study
How Steigern Tech built a complete construction ERP for Sargam Group, a real estate developer, connecting site stock, unit bookings, CRM, documents, WhatsApp automation and AI from first enquiry to possession.
Sargam Group builds residential and commercial projects in Gujarat. Like most developers, its work runs on three tracks at the same time: the site, where material arrives and is used every day; the sales office, where enquiries turn into bookings; and the back office, where approvals, agreements, payments and handovers are managed. Before this project, each track had its own spreadsheets, registers and WhatsApp groups. Steigern Tech built one construction ERP that connects all three, so the site, sales and office work from the same information, from a customer’s first enquiry to the day they receive their keys.
The Challenge: Three Disconnected Tracks Across Site, Sales and Back Office
Sargam Group builds residential and commercial projects in Gujarat. Like most developers, its work runs on three tracks at the same time: the site, where material arrives and is used every day; the sales office, where enquiries turn into bookings; and the back office, where approvals, agreements, payments and handovers are managed. Before this project, each track had its own spreadsheets, registers and WhatsApp groups.
Our Solution: A Custom Construction ERP Designed Around How Sargam Group Actually Works
We designed a custom construction ERP around how Sargam Group actually works, with one record for each project, unit and customer across nine integrated modules: Projects & Stages, Inventory & Stock Management, Unit/Block Booking, CRM & Leads, WhatsApp Automation, Document Management, AI Implementation, Possession & Project Handover, and Dashboards & Reports.
Execution Architecture & System Flow
The end-to-end technical and operational workflow engineered for Sargam Group, real estate developer, Gujarat (Sargam Sarita & Sargam Sarita 2.0).
Projects & Stages
Every project moves through seven clear stages: Draft, Confirmed, Internal Approved, Govt. Approved, In Progress, Ready to Possession and Ready to Move. Each project has its own warehouse, booking categories (3 BHK, 4 BHK, commercial), progress, brochure and a full audit trail of every status change.
Inventory & Stock Management
Live stock for every material category per project: aggregate, binding wire, brick, cement, steel, sand, tiles, electrical, plumbing, fabrication and more. Goods received, issued to towers/slabs, consumed and scrapped are all recorded. Project-wise purchased material summary with quantity, average price and total, exported to PDF/Excel.
Unit / Block Booking
A visual tower-and-floor grid shows every unit as booked, on hold, available or blocked. Sales picks a unit, links the lead, records the booking amount and payment plan, and confirms the booking in one place. The booking form and allotment letter are generated and sent to the customer on WhatsApp.
CRM & Leads
Every enquiry from the website property inquiry form, portals, walk-ins and referrals lands in one pipeline: New, Site Visit, Negotiation, Booking Done and Agreement. Each lead gets an instant WhatsApp reply with the brochure and a site-visit link. Leads link directly to the unit they book, so sales and accounts see the same customer.
WhatsApp Automation
Customers are kept updated without any manual follow-up: booking confirmation with booking form and allotment letter, construction progress updates with site photos for each tower, construction-linked payment reminders and demand letters, receipts and documents on request, and possession notice with keys handover date.
Document Management
Project documents such as RERA registration, approved plans, commencement certificate, structural stability, fire NOC and BU permission move with the project stage. Customer documents such as booking form, allotment letter, sale agreement, receipts, demand letters and possession letter sit on each unit and can be shared on WhatsApp in one click.
AI Implementation
Consumption vs order: AI compares material ordered and consumed against the BOQ plan for each material and stage, flagging wastage (e.g. steel above plan on a slab) and upcoming shortages. Material demand estimates 30-day requirements from construction schedules. Prediction from leads forecasts bookings and unit sellout velocity.
Possession & Project Handover
A handover checklist ties together final payment, BU permission, snag inspection, possession letter, keys handover and maintenance/society handover. Each step updates the customer on WhatsApp, and the project moves to Ready to Move when every unit is handed over.
Dashboards & Reports
A custom dashboard shows projects, contractors, purchase orders, consumptions, bookings, leads, inspections and construction logs, with material purchased vs consumed, project status, booking status, recent bookings and today’s site activity.
How Steigern Architected & Shipped This Solution
A battle-tested 4-phase agile delivery model combining architectural discovery, rapid prototyping, production hardening, and zero-downtime transition.
Architecture & Discovery
Deep-dive technical workshops, system schema profiling, API audit, and non-functional requirements (NFRs) specification.
Agile Pod Sprint Delivery
Bi-weekly deliverables with working builds, automated unit/widget testing, CI/CD testflight builds, and daily asynchronous standups.
Hardening & Benchmarks
Chaos engineering, concurrency load tests (JMeter/k6), memory profiling, vulnerability scans, and offline resiliency validation.
Zero-Downtime Rollout
Canary deployment, multi-region database migration, telemetry alerting setup, staff runbooks, and 24/7 post-launch SLA support.
The Real Problem vs What The System Does
A direct 1-to-1 comparison between operational bottlenecks and custom software capabilities engineered for Sargam Group, real estate developer, Gujarat (Sargam Sarita & Sargam Sarita 2.0).
Stock nobody could see: Cement, steel, sand, tiles and plumbing material moved between suppliers, the site store and each tower without live visibility until a shortage stopped work or wastage showed up at month end.
Live stock for every material category per project with goods received, issued to towers, consumed, and scrapped recorded in real time, with project-wise purchase summaries exported to PDF or Excel.
Leads lost in follow-up: Enquiries from website, property portals, walk-ins and referrals waited hours for a reply or were never followed up at all.
Every enquiry lands in one CRM pipeline (New, Site Visit, Negotiation, Booking Done, Agreement) with instant automated WhatsApp replies sending the brochure and site-visit links.
Bookings on paper: Sales teams checked unit availability by phone and paper charts, risking double bookings and slowing down ready buyers.
A visual tower-and-floor grid shows real-time unit status (available, booked, on hold, blocked) with one-click booking, payment schedule logging, and instant WhatsApp allotment letter dispatch.
Customers chasing for updates: Buyers called the office repeatedly for construction progress, payment due dates, and demand letters with every update being manual.
Automated WhatsApp alerts send milestone updates with site photos for each tower, construction-linked payment reminders, demand letters, receipts, and possession notices.
Documents everywhere: RERA certificates, approved plans, NOCs, agreements, receipts and demand letters lived in folders, email and phones with no single source.
Project documents move with project stages, while customer documents sit directly on each unit record, shareable to WhatsApp in one click.
Messy handovers: Possession required final payment, approvals, snag inspection, letters and keys to come together with missing steps causing delays.
A step-by-step handover checklist coordinates final payment, BU permission, snag inspection, possession letter, keys handover, and society handover with automated buyer alerts.
Production Technology Stack
Every library, database engine, and infrastructure provider was audited for latency, stability, and zero vendor lock-in.
Core Construction ERP
WhatsApp & Automation
AI & Material Analytics
Site & Office Modules
Results: Six Measurable Transformations Across Every Project Tower
Steigern Tech built one construction ERP that connects all three tracks, so the site, sales and office work from the same information, from a customer’s first enquiry to the day they receive their keys.
"They implemented a complete construction ERP for us covering inventory and stock management, customer bookings, document management, and CRM, with WhatsApp automation that keeps our customers updated without any manual follow-up. Our site teams, sales staff, and office now work from the same information, and nothing slips through the cracks. The team understood the construction business properly and delivered a system that genuinely fits how we work. I’d recommend them to any developer looking to get organised."
Shipped Project Deliverables & Handover
Frequently Asked Questions
Essential operational and architectural answers regarding the system engineered for Sargam Group, real estate developer, Gujarat (Sargam Sarita & Sargam Sarita 2.0).
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Building projects and still managing stock, bookings and buyers on spreadsheets? Build smarter with Steigern Tech.
Steigern Tech can build a construction ERP that fits how your company works, from site store to possession. Talk to our team today.