The most important letter you send isn’t your brochure
For a builder running one to three projects, the demand letter is the quiet engine of the whole operation. It is the document that turns a slab of concrete into a payment due. Get it right and money arrives when you need it — which, on a construction-linked plan, is exactly when you have a contractor’s bill to pay. Get it wrong and you are financing your buyers’ homes out of your own working capital, one delayed stage at a time. Most builders obsess over the sale and treat the demand letter as an afterthought. It is the other way around.
We build BizRevolt for Indian real estate, and we keep meeting builders who close beautifully and then collect terribly — not because their buyers won’t pay, but because nobody raised the demand on time, at the right amount, with the right tax on it. This is a fixable problem. It just isn’t fixable in Excel.
What a construction-linked plan actually is
In a construction-linked plan (CLP), the buyer’s payments are triggered by construction milestones rather than the calendar. A booking amount, then a slice on completion of the foundation, another on the plinth, a fixed percentage on each slab, more on brickwork, plastering, flooring, and the balance at possession. The logic is fair to both sides: the buyer pays for progress they can see, and you collect against work you have actually done. But it means your collections calendar is not a calendar at all — it is a function of your site. Every slab poured is a batch of demand letters that should go out that week.
That coupling is the whole point, and it is also where money leaks. A slab gets completed on site and the demand does not go out for three weeks because the person who raises letters didn’t know. Multiply that lag across every stage and every unit and you have financed a chunk of your own project for free.
The rules the letter has to respect
Two things sit underneath every demand you raise. The first is RERA. Under Section 13 of the Real Estate (Regulation and Development) Act, 2016, a promoter cannot accept more than ten percent of the cost of the apartment as an advance before entering into a registered agreement for sale — and that agreement has to spell out the payment schedule, the dates, and the manner of payment. In other words, your demand letters are not something you improvise; they are supposed to follow the schedule the buyer already signed. If your letters and your agreement disagree, the letter loses.
The second is GST. An under-construction home carries 5% GST without input tax credit, or 1% for a qualifying affordable unit — the rates that came in on 1 April 2019. That tax rides on every construction-linked installment until the project receives its completion certificate; a unit sold after the completion certificate carries no GST at all. So the same flat can generate taxable demands for two years and then a tax-free one at possession, and your letters have to get that switch exactly right. Charge GST on a post-CC demand and you have overcharged a buyer; miss it on a pre-CC demand and you have underpaid the department.
And then there are co-buyers
Most flats in India are bought by two people — a couple, a parent and child, two siblings. On a construction-linked plan that means every single demand has to split cleanly between co-buyers in their agreed ratio, with receipts and a running ledger for each, so that at possession — and at tax time — both parties have a clean record. Do this by hand across dozens of units and reconciliation becomes a part-time job nobody was hired for.
What a demand letter has to get right, every time
Strip it down and a correct demand is not complicated — it is just unforgiving of small mistakes. Each one needs to carry:
- The exact stage it is raised against, matched to the signed payment schedule — not a round number someone guessed.
- The right GST treatment for that stage: 5% or 1% while under construction, nil once the completion certificate is in.
- A due date and the delay-interest clause from the agreement, applied consistently instead of case by case.
- A clean split across co-buyers, with a per-buyer receipt and ledger that survives to possession.
- A live running balance per unit, so you and the buyer always agree on what is paid and what is outstanding.
Where the software market leaves the mid-market builder
Be fair about the tools. Sell.Do is a capable, sales-heavy real estate platform, but at roughly ₹20,000 to ₹60,000 a month it is priced for the large developer with a dedicated CRM team. Zoho is inexpensive and flexible, but it is a general-purpose CRM — it knows leads and deals, not slabs, demand letters, RERA schedules, or GST switches. LeadRat and the other lead-first tools are built to capture enquiries from 99acres and MagicBricks, which is genuinely useful at the top of the funnel and silent about everything after the sale. The one-to-three-project builder falls straight into the gap: too small for Sell.Do’s price, too specific for Zoho’s generality.
How we close the gap
BizRevolt treats the demand letter as the centre of the product, not a report you export. You define the project’s construction-linked schedule once; as each stage is marked complete, the system generates the demands due, applies the correct GST for that stage, splits every amount across co-buyers, tracks due dates and delay interest, and keeps a live unit-by-unit ledger you and the buyer can both see. Lead capture from the portals, a buyer self-service view, and clean, RERA-aware collections sit in the same place — priced per user at ₹999, ₹1,599, or ₹2,499, which is built for the mid-market builder the big platforms skip.
If you run one to three projects and your collections depend on demand letters going out the day a slab is done, that is exactly the workflow we would want to show you on your own project. Message us on WhatsApp, or call +91 91 0657 4865 and we’ll map your payment schedule and your next few demands with you before you commit to anything.
Image credits: Moheen Reeyad, CC BY-SA 4.0, via Wikimedia Commons; Biswarup Ganguly, CC BY 4.0, via Wikimedia Commons — both via Wikimedia Commons.