Do not forget the cost of making existing items usable. Cleaning, minor adjustments and small replacements can be cheaper than immediately buying new furniture or fittings.
Is this duplex standalone or part of a managed development, and has the inspection happened yet? Service charges and responsibility for the roof or shared areas could materially change the calculation. I would also want to know your normal monthly spending, because ₹2,422,000 represents a very...
Fair caveat. I’d build separate low, middle and high cases rather than force one adjustment: completed-sale baseline; area difference; documented refurbishment allowance; then parking, outdoor space, service charges and lease terms. Flood exposure should be tested separately because folding it...
One completed sale is the strongest evidence here, but only if its micro-location, layout and rights are genuinely comparable. A four-bedroom arrangement within 90 m² may behave differently enough that a simple price-per-m² adjustment gives false precision.
If the sale is closely matched, I...
Also clarify what counts as a 1-bed for you. Some listings may have a genuinely separate bedroom; others may rely on a small multipurpose room or an awkward partition. Asking for a floor plan, rather than just the bedroom count and total area, should filter those out.