How to Track Builder Construction Updates and Demand Letters with Your Real Estate CRM in India
Under-construction property tracking with a real estate CRM is one of the most neglected workflows in Indian real estate — and one of the most consequential. Under-construction properties account for the majority of new residential sales in India. Every one of those transactions generates a stream of builder demand letters, construction milestone updates, payment deadlines, TDS obligations, and buyer queries that arrive over a 3–5 year possession timeline. Most agents manage this in a combination of WhatsApp forwards, Excel sheets, and memory — and the result is missed payment deadlines, compliance gaps, buyer disputes, and liability that never should have existed. This guide gives you a step-by-step CRM system for tracking every demand letter, every construction update, and every TDS obligation from booking to possession.
Why Under-Construction Property Creates a CRM Problem
India has over 2 lakh RERA-registered under-construction projects as of 2026. The majority of new residential sales in markets like Mumbai, Pune, Bangalore, Hyderabad, Noida, and Ahmedabad involve under-construction inventory — buyers paying in instalments tied to construction milestones or time schedules over a 3–5 year period.
Every one of these transactions creates an ongoing relationship between the agent, the buyer, and the builder — a relationship that generates documentation, deadlines, and decisions long after the booking cheque is cashed.
Here is what happens in a typical under-construction deal without a CRM:
- Booking: Agent closes the deal, collects booking amount, forwards RERA certificate and allotment letter to buyer via WhatsApp.
- First demand letter (3–6 months later): Builder sends demand letter to buyer for slab or structure milestone payment. Buyer forwards to agent for clarification. Agent searches WhatsApp history for the original allotment letter to confirm the payment terms.
- TDS question: Buyer asks whether TDS applies. Agent Googles Section 194-IA, gives an approximate answer, and hopes the buyer handles Form 26QB correctly.
- Construction delay: Buyer calls 6 months later asking about project status. Agent has no update system; calls the developer’s sales contact, who has moved on.
- RERA complaint: Buyer escalates to RERA after possession is delayed. Agent is dragged into the dispute with no documented record of communications or payment advice given.
This is not an edge case. It is the default experience for buyers dealing with agents who have no structured under-construction management system. A CRM does not just prevent these failures — it turns under-construction management into a service differentiator that generates referrals.
Understanding the Builder Payment Plan Landscape in India
Before building your CRM workflow, you need to understand the payment plans your buyers will encounter. Each plan generates demand letters differently.
Construction-Linked Plan (CLP)
The CLP is the most RERA-compliant payment structure. Payments are triggered by verified construction milestones — typically:
- Booking: 10–15% of total cost
- Foundation/Plinth: 10–15%
- Ground slab: 10%
- Each floor slab (multi-storey): 5–7% per floor (varies by project)
- Structure completion: 10%
- Finishing/brickwork: 10%
- Possession: 5–10% (including amenities and legal charges)
Each milestone triggers a formal demand letter from the builder. The buyer has 10–30 days to pay (as specified in the allotment letter); delayed payment typically attracts 18% per annum interest.
Time-Linked Plan (TLP)
TLP payments are triggered by calendar milestones rather than construction progress. Every 3, 6, or 12 months, a demand letter arrives — regardless of whether the builder has reached the corresponding construction stage. TLP is high-risk for buyers because payments continue even if construction stalls. RERA has curbed the worst excesses of TLP, but it remains common in projects with subvention schemes.
Flexi / Hybrid Plan
A hybrid of CLP and TLP: a large initial payment (30–50%) followed by construction-linked instalments. Often marketed as “30:70” or “20:80” plans. The initial lump sum reduces the ongoing milestone tracking complexity but increases the buyer’s early financial exposure.
Subvention Scheme
The builder pre-arranges a home loan for the buyer; the builder pays the EMI during the construction period, and the buyer’s EMI begins at possession. Subvention schemes create a three-party tracking problem: buyer, builder, and bank each receive demand letters, and the payment flow must be reconciled across all three. Subvention schemes have faced RERA scrutiny; agents must be careful to represent these accurately.
What a Demand Letter Is — and Why It Creates Urgency
A demand letter (also called a payment notice or call notice) is a formal communication from the builder to the buyer stating:
- The construction milestone achieved (or the time period elapsed)
- The percentage/amount due as per the allotment letter
- The deadline for payment (typically 10–30 days)
- The penalty interest rate for late payment (typically 18% per annum)
- Bank account details and payment reference instructions
Demand letters create immediate urgency for your buyer — and they create immediate opportunity for you. A buyer who receives a demand letter and cannot quickly confirm the payment amount, TDS obligation, and payment method is a buyer who is anxious and potentially unhappy with their purchase experience. An agent who responds proactively — “Your next demand letter for the 5th floor slab is due in 10 days; here is the amount, TDS details, and payment instructions” — is an agent who turns a stressful financial event into a confidence-building moment.
This is the single most powerful referral generation behaviour available to under-construction specialists. Buyers who feel well-managed throughout a 4-year construction timeline refer their friends and family at rates far above the industry average.
How to Set Up a Construction Milestone Tracker in Your CRM
Here is the step-by-step process for building a working construction milestone tracker in Realatic (the same logic applies to any CRM with custom fields and automation):
Step 1: Create a Project Record for Each Builder Project
For each under-construction project you work with, create a Project record in your CRM containing:
- Project name and developer
- RERA registration number (mandatory — this is your compliance anchor)
- Total project units, configuration types, available inventory
- RERA-registered possession date
- Payment plan type (CLP, TLP, Flexi, Subvention)
- Contact: developer sales manager and legal team
- Document store: RERA certificate, brochure, floor plans, payment schedule, sample allotment letter
Step 2: Create a Booking Record for Each Buyer
When a buyer books a unit, create a Booking record linked to both the buyer’s lead record and the project record. Capture:
- Unit number, floor, configuration, carpet area, total cost
- Payment plan selected (CLP/TLP/Flexi/Subvention)
- Complete payment schedule: each milestone, expected date, amount, percentage
- Booking amount paid, date, receipt number
- Allotment letter (upload the scanned copy)
- Home loan lender and loan amount (if applicable)
- TDS applicable: yes/no (property above ₹50L = yes); buyer’s PAN, seller/builder PAN
Step 3: Create Milestone Tasks for Every Demand Letter
For each milestone in the payment schedule, create a Task/Activity in your CRM:
- Task name: “Demand Letter Due — [Project] [Unit] [Milestone Name]”
- Due date: estimated milestone trigger date + 7-day advance warning
- Linked to: buyer record + project record
- Action required: notify buyer, confirm TDS, follow up on payment confirmation
Most projects have 6–12 demand letters over their construction timeline. Creating these tasks at booking time means they will surface automatically as due dates approach — without you having to remember or track manually.
Step 4: Configure Automated Reminders
Set up automation rules that trigger when milestone task due dates approach:
- 7 days before due date: Automatic WhatsApp message to buyer — “The next milestone payment for [Project] Unit [Number] is due in 7 days. Amount: ₹[X]. We will send you the payment instructions shortly.”
- 3 days before due date: Follow-up WhatsApp with payment details and TDS reminder if applicable.
- On due date: Notification to agent to confirm buyer has paid and obtain payment receipt for records.
- 3 days after due date: If no payment confirmed, alert agent for follow-up call.
Step 5: Track Actual Demand Letters as They Arrive
When the builder actually issues a demand letter:
- Upload the PDF to the buyer’s booking record
- Update the milestone task with the actual due date (may differ from estimated)
- Send the buyer a WhatsApp with the demand letter attached and payment instructions
- Log the outstanding TDS amount and remind buyer to file 26QB within 30 days of payment
Automating Demand Letter Notifications and Buyer Follow-Ups
Manual demand letter management breaks down at scale. If you have 50 active under-construction bookings across 8 projects, you have potentially 400–600 demand letter events over the next 3–5 years. No spreadsheet survives that.
The automation sequence that works:
Builder sends demand letter → Agent uploads to CRM → CRM auto-notifies buyer on WhatsApp with: letter attached, amount due, TDS applicable (yes/no + amount), payment deadline, bank details → Buyer acknowledges → Agent logs payment confirmation → CRM archives the event against the booking record
Proactive milestone broadcast (without waiting for the demand letter):
Set a quarterly CRM task per project: “Confirm current construction stage with developer.” When you confirm that, for example, the 8th floor slab has been cast on a 12-storey project, update the project record and trigger a proactive communication to all buyers on units on floors 9–12:
“Construction update: The 8th floor slab at [Project] has been completed. Based on the construction-linked plan, the next demand letter covering floors 9–12 is expected within the next 6–8 weeks. We will notify you as soon as the official letter is issued.”
This is what separates professional agencies from transaction brokers. Proactive construction updates — sent without the buyer having to ask — are the primary driver of referrals in the under-construction segment.
TDS Compliance at Each Payment Stage
TDS Section 194-IA is non-negotiable for any property transaction above ₹50 lakh. The buyer must deduct 1% TDS on each payment instalment and deposit it via Form 26QB online within 30 days of the end of the month in which payment was made.
Here is how it works across the payment plan:
| Payment Stage | Payment Amount | TDS (1%) | 26QB Deadline |
|---|---|---|---|
| Booking amount (if >₹50L total) | ₹10,00,000 | ₹10,000 | Within 30 days of month end |
| Slab completion demand | ₹8,00,000 | ₹8,000 | Within 30 days of month end |
| Structure completion demand | ₹15,00,000 | ₹15,000 | Within 30 days of month end |
| Finishing demand | ₹12,00,000 | ₹12,000 | Within 30 days of month end |
| Possession demand | ₹10,00,000 | ₹10,000 | Within 30 days of month end |
After filing 26QB, the buyer must generate and send Form 16B to the builder within 15 days of the due date for TDS deposit.
Consequences of non-compliance: Interest at 1% per month for late deduction + 1.5% per month for late deposit. If the buyer fails to deduct TDS, the buyer — not the builder — is liable.
Your CRM should track:
- Total property cost (to confirm TDS applicability)
- Each payment milestone with TDS amount
- 26QB filing deadline per milestone
- Confirmation that Form 16B has been issued
Agents who proactively communicate TDS obligations at each demand letter stage are almost never blamed in buyer disputes. Agents who never mentioned TDS are regularly cited.
Comparison Table: Without CRM vs With CRM for Construction Tracking
| Scenario | Without CRM | With Realatic CRM |
|---|---|---|
| Demand letter received from builder | Forwarded on WhatsApp; buyer may miss it | Auto-uploaded, buyer notified with payment details |
| Payment deadline tracking | Manual diary/memory | Automated task + buyer reminder sequence |
| TDS guidance at each milestone | Buyer asks, agent guesses | TDS amount calculated and communicated at every milestone |
| Construction update to buyers | Sporadic WhatsApp broadcast | Systematic project update triggered by milestone confirmation |
| Multiple projects (5–10) | Excel sheet per project | Unified dashboard across all projects |
| Buyer payment confirmation | WhatsApp screenshot | Logged in booking record with receipt upload |
| RERA compliance documentation | Paper file / WhatsApp | Centralised per project, audit-ready |
| 26QB filing reminders | Not tracked | Automated reminder post-payment |
| Buyer satisfaction at possession | Variable; disputes common | Consistently high; full documented history |
| Referrals from under-construction buyers | Low (transactional) | High (service-differentiated) |
RERA Context: What You Must Know for Under-Construction Properties
Section 11 (Builder obligation): Builders must update the RERA portal with quarterly construction progress reports. As an agent, monitoring these updates is your first line of defence against buyers being misled about project timelines.
Section 12 (Disclosure obligation): All payment schedules, construction timelines, and project specifications must be disclosed at RERA registration. The allotment letter should mirror the RERA-registered payment schedule. If it does not, that is a red flag.
Section 18 (Delayed possession): If the builder fails to give possession by the RERA-registered date, the buyer is entitled to:
- Full refund with interest at SBI MCLR + 2% if they want to exit
- Monthly interest compensation until actual possession if they want to continue
Section 19 (Buyer obligations): Buyers must pay demand letters on time as per the allotment letter. Failure to pay on time gives the builder the right to charge penal interest (typically 18% per annum).
Agent registration (Section 9): Agents must be RERA-registered in the state where they operate. Your RERA registration number must appear in all promotional materials and transaction documents.
Common Builder Payment Plans: A Reference Table
| Plan Type | When Payments Are Triggered | RERA Risk for Buyer | Best For |
|---|---|---|---|
| Construction-Linked (CLP) | Construction milestones | Low — payments tied to actual progress | Most buyers |
| Time-Linked (TLP) | Calendar dates | High — payments even if construction stalls | Avoid unless subvention-backed |
| Flexi / 30:70 | Large upfront, balance at possession | Medium — upfront exposure, lower ongoing risk | Buyers with lump-sum capital |
| Subvention Scheme | Builder pays EMI during construction | Medium — depends on builder financial health | Salaried buyers with no lump sum |
| Down Payment + Spot | Full/near-full payment immediately | High — maximum exposure if builder delays | Only for trusted Grade A developers |
FAQ
Q: What is a demand letter in real estate? A demand letter (or payment notice / call notice) is a formal communication from the builder to the homebuyer requesting payment of a specific instalment as per the allotment letter. It is triggered by a construction milestone or a calendar date and specifies the amount due, the deadline, and the interest rate for late payment. Buyers have 10–30 days to pay from the date of the letter.
Q: Is TDS mandatory on under-construction property payments in India? Yes, if the total agreed property value exceeds ₹50 lakh. Under Section 194-IA, the buyer must deduct 1% TDS on each payment instalment — including the booking amount — and deposit it via Form 26QB within 30 days of the end of the month in which payment was made. Failure to comply results in interest penalties for the buyer.
Q: What happens if a buyer misses a demand letter deadline? The builder has the right to charge penal interest as specified in the allotment letter — typically 18% per annum on the outstanding amount, calculated from the due date. If the buyer fails to pay for an extended period, the builder may issue a cancellation notice (subject to RERA’s cancellation charge limits). Proactive CRM reminders prevent this scenario.
Q: Can I track demand letters for multiple projects in one CRM? Yes. Realatic allows you to create a project record for each developer project, with individual booking records per unit. Demand letter milestones and tasks are linked to each booking, giving you a unified dashboard across all projects. You can filter by project, by outstanding payment, by TDS due, or by upcoming milestone — without opening multiple spreadsheets.
Q: How should I explain TDS to a first-time homebuyer? Clearly and proactively. Tell your buyer at the time of booking: “Since the property value is above ₹50 lakh, you are required to deduct 1% TDS on each payment you make to the builder. You file this online using Form 26QB within 30 days of each payment. I will remind you of the TDS amount and the deadline for each demand letter so you are always compliant.” Buyers who receive this guidance upfront are grateful; buyers who discover TDS obligations later — or face penalties — blame their agent.
Q: What should I do if the builder’s construction timeline is running behind the RERA date? Track the RERA portal updates (Section 11 requires quarterly construction progress uploads). If the project is falling behind, communicate proactively to your buyer — do not wait for them to discover it. Inform them of their rights under Section 18 (compensation or exit option if possession is delayed). Buyers who feel informed and represented do not escalate to RERA; buyers who feel abandoned do.
Q: Does Realatic support under-construction payment tracking? Yes. Realatic includes a payment milestone tracker linked to each booking record, automated demand letter notifications via WhatsApp and email, TDS calculation and compliance reminders, RERA documentation storage, and construction update broadcast tools. The features page covers the full list.
Build a Service That Generates Referrals, Not Disputes
The agents who dominate the under-construction segment in India are not the ones with the most listings. They are the ones whose buyers feel supported across a 3–5 year construction timeline — and who generate referral business from every closed deal rather than hoping for repeat enquiries.
Realatic gives you the tools to deliver that service systematically: construction milestone tracking, automated demand letter notifications, TDS compliance reminders, RERA documentation storage, and a WhatsApp inbox that keeps every buyer conversation in one place. Setup takes 1–2 days. The free plan handles 3 users and 100 leads/month at no cost.