Monthly slip forecasts against RERA possession dates for mid-size builders
TL;DR Slipwatch tells a mid-size housing builder, every month, how likely each tower is to miss the completion date it registered with RERA and which activities are pushing it late. It reads the site progress, purchase and labour data the builder already logs. Builders pay a subscription per project.
Under RERA, every housing project must register and publish its completion schedule on the regulator's website, and 70% of buyers' money must sit in a separate account for that project[1][2]. A promoter who skips registration faces a penalty of up to 10% of the project cost[1].
Missing the date hurts too. Buyers complain, lenders worry and sales slow down. Yet most mid-size builders find out a tower is late only when the slab cycle has already slipped for months.
The extreme case is one insolvent developer, where construction stalled around 2013–14 and over 20,000 buyers were still waiting years later[3].
Slipwatch connects to the site app, purchase register and labour attendance a builder already uses, or takes a weekly spreadsheet if that's all there is. It compares actual progress per tower against the RERA schedule and the builder's own plan, and then produces a monthly forecast with the likely completion window, the chance of missing the registered date and the three activities driving the gap.
The model starts simple. Slab cycle times, material lead times, labour counts and change-order frequency explain most slips, and one study of 141 projects found change orders and design changes ranked as the top cause of delay[4]. Over time, Slipwatch learns from completed projects across its customers.
What you get is a one-page note for the promoter and the project head, not yet another dashboard to learn.
The promoter or projects director of a builder running 2–10 projects pays, typically in tier-2 cities or on the outskirts of metros. They already pay for site apps and accounting software. Slipwatch prices per active project per month. No public price exists for comparable forecasting tools in India, and the best-known site app doesn't publish prices either[5].
Site data has moved onto phones. One site app alone claims more than 700,000 downloads and 85,000 projects[5], so a lot of builders now have digital progress records that didn't exist five years ago. Large-project tools already sell AI schedule-risk analysis abroad[6], which shows the method works when the data exists.
I found no public figure for the number of RERA-registered projects that run late, or for spending on schedule forecasting in India. The firmest signal is indirect - buyers in stalled projects have fought for years through insolvency courts[3], and RERA ties penalties to registration and disclosure[1].
Treat the market as unproven until 10 builders pay.
Indian site apps record site progress, materials and labour for contractors and owners but don't forecast the possession date[5]. A UK project-controls vendor offers AI schedule-risk and delay analysis to large global contractors[6], which suits projects with professional planners.
Mid-size Indian builders sit right between these two. They have site data but no scheduler, and no tool turns that data into a date they can trust.
| Difficulty | Moderate (41/100) |
| Starting capital | ₹60–110 L |
| Time to launch | 6–9 months |
The forecasting is the easy part. Messy data and honesty are the hard part. Site logs are patchy, so your first months go into data cleaning. And will a promoter want a tool that tells them, in writing, that a project will be late? Not always.
No licence is needed for forecasting software, but your customers are RERA-regulated, so know their rules.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't let a forecast stand in for an engineer's judgement or a buyer communication. It's an estimate built on patchy site data.
Want to work out the AI layer for Slipwatch? Talk to Yash →
I think this is a sensible idea for a founder who has worked in construction planning and can sit with project heads. It is a poor fit for a pure data scientist. First prove that your forecast, made six months ahead on three completed projects, would have called the actual delay within one month.
Plan for roughly ₹60–110 L, much of it for data cleaning, model work and slow sales to builders.
No. You need company registration, GST and DPDP compliance, and you should understand RERA because your customers answer to it.
Yes, wherever builders log site data and face completion deadlines. Check how your local housing regulator handles project schedules.
The free Slipwatch validation kit has the line-by-line capital breakdown, the effort scoring, the RERA and data checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for promoters and project heads, and 5 assumptions to test. Download the kit →
Thinking about building Slipwatch or something close to it? The make-or-break work is getting clean progress data from busy sites every week, and I'm happy to help you work out how. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.