Under Construction vs Ready to Move: The Real Trade-Off

Price, GST, risk, rent overlap and possession delay — a straight comparison of the two choices every buyer faces.

15 March 2026 · 2 min read

Under-construction is cheaper. Ready-to-move is certain. Whether the discount is worth the uncertainty depends on numbers the buyer can actually work out — so work them out rather than arguing about it.

Under construction: the case for

  • Lower entry price, often meaningfully so at launch
  • Staged payment, linked to construction, so the capital outflow is spread
  • Choice of floor, facing and unit
  • Appreciation between booking and possession, in a rising market

Under construction: the case against

  • GST applies, unlike a completed property
  • Delay risk, which is the real cost
  • Rent and EMI together through the construction period
  • You are buying a drawing — the sample flat is not the flat
  • Developer risk, even with RERA protections in place

Ready to move: the case for

  • What you see is what you get — light, noise, neighbours, water pressure, the actual finish
  • No GST on a completed property
  • Rent stops the day you move in
  • The society is functioning — you can ask residents what is wrong with it
  • No possession risk

Ready to move: the case against

  • Higher price
  • Full payment needed sooner
  • Less choice
  • Older buildings may need immediate spend

The calculation to actually run

Take the under-construction discount. Subtract:

  • GST on the under-construction price
  • Rent for the expected construction period
  • Rent for a realistic delay buffer — a year is not pessimistic
  • Any escalation or infrastructure charges due at possession

What remains is the real discount. Often it is far smaller than the headline gap, and sometimes it is negative.

The checks that matter for under construction

  • RERA registration number, verified on the state RERA portal — not the number on the brochure
  • The developer's delivery record on completed projects, not their brochure
  • What the agreement says about delay compensation, and whether it is realistic
  • Whether the approvals are complete or "in process"

The checks that matter for ready to move

  • Occupancy certificate issued
  • Title chain clean
  • No outstanding society dues
  • Actual maintenance charge, and whether the sinking fund exists
  • Water supply, and how many hours a day

The honest guidance

A buyer paying rent, with a fixed timeline, on their first home, is usually better off ready-to-move even at a premium. A buyer with time, a place to live, and appetite for risk can make under-construction work — provided they pick the developer, not the price.

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Frequently asked questions

Is GST payable on a ready-to-move flat?

Generally no, where the completion or occupancy certificate has been issued before the sale. Under-construction purchases attract GST. This alone is a meaningful price difference and buyers often overlook it.

What is the main risk of under construction?

Delay. Paying rent and EMI simultaneously for an unplanned extra year is what turns a good discount into a bad decision.