🏠 Case Study — Interior Design Business

From WhatsApp chats to
auto-generated quotations
& a full project dashboard

JK Interior in Serampore, West Bengal was juggling client chats, handwritten quotations, and Excel sheets for project tracking. We built a complete AI-powered business platform — WhatsApp bot, smart quotation engine, and a project management dashboard.

3Tools Built
5 minQuotation Time (was 2 hrs)
100%Digital Project Tracking
4 weeksBuild Time
The Problem
Running a design business on WhatsApp screenshots and notebooks
  • Clients send requirements on WhatsApp — room photos, Pinterest links, voice notes — scattered across 50+ chats
  • Creating a quotation took 2+ hours: manually listing materials, calculating costs, formatting in Word/PDF
  • No standard pricing — same work quoted differently to different clients, leading to losses
  • Project tracking done in a notebook: which materials were bought, payments to carpenters/painters, pending work
  • No portfolio — past work photos buried in phone gallery, no way to show new clients
  • Client follow-ups missed — no system to track who's interested, who needs a revised quote
  • Labour payments tracked on paper — disputes with contractors about amounts paid
The Solution
Three integrated tools that run the entire business
1

💬 WhatsApp Business Bot — Client Intake & Quotation

Clients message on WhatsApp as usual. The AI bot collects requirements through a natural conversation, then generates a professional quotation automatically.

  • 📸 Client sends room photos → AI identifies room type & dimensions
  • 🗣️ Conversational flow: "What's your budget?", "Which rooms?", "Any style preference?"
  • 📋 AI generates itemized quotation with materials, labour, timeline
  • 📄 Sends professional PDF quotation directly on WhatsApp
  • 🔄 Client can ask "What if we use laminate instead of veneer?" — AI recalculates instantly
  • 🇮🇳 Works in Hindi, English, and Hinglish
2

📊 Smart Quotation Engine — Accurate Pricing in Minutes

A built-in pricing database with 500+ materials, labour rates, and task templates. The designer selects what's needed and the system calculates everything.

  • 🪵 Material database: plywood, laminates, hardware, paint, tiles — with current market rates
  • 👷 Labour rate cards: carpenter (₹800/day), painter (₹600/day), electrician (₹700/day)
  • 📐 Task templates: "Modular Kitchen 10x8ft", "Wardrobe 6x7ft", "False Ceiling per sqft"
  • 💰 Auto-calculates: material cost + labour + margin + GST = final price
  • 📄 Generates branded PDF with company logo, terms & conditions, payment schedule
  • ✏️ Easy revisions — change one material and entire quote updates
3

🖥️ Project Management Dashboard — Track Everything

A web dashboard to manage every project from start to finish — materials, payments, photos, client feedback, all in one place.

  • 📦 Material tracker: what's ordered, delivered, used — with bills & receipts
  • 💸 Payment ledger: track every payment to carpenters, painters, vendors — with dates & proof
  • 📸 Project gallery: upload before/during/after photos & videos for each project
  • Client reviews: collect feedback & ratings after project completion
  • 📁 Past work archive: searchable portfolio of all completed projects
  • 📊 Profit calculator: actual cost vs quoted price — know your real margins
WhatsApp Bot in Action
Client inquiry → Quotation in 5 minutes
🏠
JK Interior
● Online
Hi, I need interior work for my 2BHK flat
2:15 PM
Hello! 👋 I'd love to help you design your space.

To give you an accurate quote, could you tell me:

1️⃣ Which rooms? (Kitchen / Bedroom / Living / All)
2️⃣ Approximate room sizes?
3️⃣ Your budget range?
2:15 PM
Full flat — kitchen, 2 bedrooms, living room. Budget around 8-10 lakhs
2:16 PM
Great! For a 2BHK in the ₹8-10L range, here's what I'd recommend:

🍳 Modular Kitchen — ₹2.8L
🛏️ 2 Wardrobes — ₹1.6L
📺 TV Unit + Shoe Rack — ₹85K
💡 False Ceiling (all rooms) — ₹1.2L
🎨 Painting + Wallpaper — ₹95K
⚡ Electrical + Lights — ₹60K

📊 Total Estimate: ₹8.0L (incl. GST)
⏱️ Timeline: 45-50 days

Want me to send a detailed PDF quotation with material specs?
2:16 PM
Yes please! Also can you use marine ply instead of commercial?
2:17 PM
Sure! Upgrading to marine plywood:

📊 Revised Total: ₹9.2L (incl. GST)
↑ ₹1.2L increase for marine ply upgrade

📄 Sending your detailed quotation now...

✅ Quotation sent! Check the PDF below 👇
2:17 PM
Auto-Generated Quotation
Professional PDF sent to client in seconds

🏠 JK Interior — Project Quotation

Quote #JKI-2025-0047 • March 24, 2025 • Valid for 15 days

Client: Mr. Rahul Verma • 2BHK, Serampore, West Bengal

ItemMaterialDaysAmount
Modular Kitchen (10×8 ft)Marine Ply + Laminate15₹2,80,000
Master Bedroom WardrobeMarine Ply + Veneer8₹95,000
Kids Room Wardrobe + StudyMarine Ply + Laminate7₹65,000
TV Unit + Shoe RackMarine Ply + PU Finish5₹85,000
False Ceiling (all rooms)Gypsum + Cove Light6₹1,20,000
Painting + WallpaperAsian Royale + Imported5₹95,000
Electrical + LightsHavells + Philips LED4₹60,000
Grand Total (incl. 18% GST) ₹9,20,000

Payment: 40% advance • 30% mid-project • 30% on completion
Timeline: 45-50 working days from advance payment

Project Dashboard
Track materials, payments, photos — everything
jk-interior.srijanix.in/dashboard
3
Active Projects
12
Completed
₹4.2L
Pending Payments
4.8⭐
Avg Rating
ProjectClientBudgetStatusProgress
2BHK SeramporeRahul V.₹9.2LActive65%
3BHK ChandannagarPriya M.₹14.5LActive30%
Office CabinTechCorp₹3.8LQuoted
1BHK RishraAmit S.₹5.5LComplete100%
How We Built It
4-week development sprint
1

Week 1 — Discovery & Quotation Engine

Spent 2 days with the designer understanding her workflow, pricing patterns, and common project types. Built the material & labour database with 500+ items. Created quotation templates for kitchen, wardrobe, false ceiling, painting, and full-home packages.

2

Week 2 — WhatsApp Bot

Built the conversational AI that collects client requirements through natural chat. Integrated with the quotation engine to generate instant estimates. Added PDF generation with the designer's branding. Hindi + English support.

3

Week 3 — Project Dashboard

Built the web dashboard for project management — material tracking with bill uploads, labour payment ledger, project photo gallery, and client review collection. Added profit margin calculator.

4

Week 4 — Portfolio Site & Go Live

Created a public portfolio page showcasing completed projects with before/after photos and client testimonials. Connected everything — WhatsApp leads flow into dashboard, quotations link to projects. Trained the designer and her team.

Tech Stack
What powers the platform
💬WhatsApp Business API
🧠GPT-4 + Custom Pricing AI
⚛️React Dashboard
☁️AWS Lambda + S3
🗄️DynamoDB
📄PDF Generation
Results
After 2 months of using the platform
5 min
Quotation time (was 2 hours)
3x
More quotes sent per week
₹0
Payment disputes with labour
40%
More client conversions

💬 What the designer said

"Earlier I used to spend my evenings making quotations in Word. Now my WhatsApp bot handles initial inquiries and I generate professional quotes in 5 minutes. The dashboard is a lifesaver — I know exactly how much I've spent on each project, every payment to every carpenter is recorded. No more fights over money. And my portfolio page has brought me 4 new clients already."

— JK Interior, Serampore, West Bengal

Run an interior design or construction business?

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