The 10-20% Discount Is a Myth for Most Buyers
Under-construction flats look 10-20% cheaper than ready-to-move-in properties on paper. Builders sell this as “early bird pricing.” Real estate agents call it “appreciation potential.”
Here is what actually happens to a Rs 1 crore under-construction flat with a 15% discount:
| Cost Component | Under-Construction (Rs 85L base) | Ready-to-Move (Rs 1 Cr) |
|---|---|---|
| Purchase price | Rs 85,00,000 | Rs 1,00,00,000 |
| GST (5% on 67% for UC / 0% for RTM) | Rs 2,84,750 | Rs 0 |
| Pre-EMI interest (3 years at 9%) | Rs 22,95,000 | Rs 0 |
| Rent during construction (Rs 25K/month x 36 months) | Rs 9,00,000 | Rs 0 |
| Lost Section 24 tax benefit (30% bracket, 3 years) | Rs 1,80,000 | Rs 0 |
| Lost Section 80C tax benefit (30% bracket, 3 years) | Rs 1,35,000 | Rs 0 |
| Total effective cost | Rs 1,22,94,750 | Rs 1,00,00,000 |
The “cheaper” property costs Rs 22.9 lakh more. And this assumes the project is delivered in 3 years — the stated timeline. If it takes 5 years (common in NCR), add another Rs 15-20 lakh in dead interest and rent.
The GST Gap Nobody Quotes Upfront
| Property Type | GST Rate | Effective GST on Rs 1 Cr |
|---|---|---|
| Under-construction (non-affordable) | 5% on 67% of value | Rs 3,35,000 |
| Under-construction (affordable, under Rs 45L) | 1% on 67% of value | Rs 30,150 on Rs 45L |
| Ready-to-move (with OC) | 0% | Rs 0 |
GST is applied only on 67% of the agreement value because 33% is deemed land value (exempt). But Rs 3.35 lakh on a Rs 1 crore flat is still money that ready-to-move buyers do not pay.
Builders often exclude GST from their quoted price. When they say “Rs 85 lakh all-inclusive,” verify whether GST is included. If not, your actual price is Rs 88.35 lakh — cutting the supposed discount from 15% to 11.6%.
The Pre-EMI Trap: How Rs 27 Lakh Disappears Before You Move In
Pre-EMI is the silent killer of under-construction property economics. Here is how it works:
Your bank disburses the loan in stages as construction progresses. During construction, you pay interest only on the disbursed amount. Zero principal gets repaid.
Pre-EMI on a Rs 1 Crore Loan at 9%
| Construction Stage | Cumulative Disbursed | Monthly Pre-EMI | Annual Pre-EMI |
|---|---|---|---|
| Booking (10%) | Rs 10,00,000 | Rs 7,500 | Rs 90,000 |
| Foundation (25%) | Rs 25,00,000 | Rs 18,750 | Rs 2,25,000 |
| Slab completion (50%) | Rs 50,00,000 | Rs 37,500 | Rs 4,50,000 |
| Superstructure (75%) | Rs 75,00,000 | Rs 56,250 | Rs 6,75,000 |
| Full disbursement (100%) | Rs 1,00,00,000 | Rs 75,000 | Rs 9,00,000 |
| Full EMI after possession | Rs 1,00,00,000 | Rs 89,973 | Rs 10,79,676 |
Total pre-EMI paid over 3-year construction: approximately Rs 27,00,000. All of it is pure interest — your outstanding principal on day of possession is still Rs 1 crore.
What If You Chose Full EMI from Day One Instead?
A study by GetMoneyRich on a Rs 2.5 crore loan at 9% with 4-year construction:
| Payment Option | Total Repayment Over Loan Life |
|---|---|
| Full EMI from day one | Rs 5.40 crore |
| Pre-EMI (interest-only during construction) | Rs 6.30 crore (16% more) |
| Deferred EMI (pay nothing during construction) | Rs 7.35 crore (36% more) |
The deferred EMI option — marketed as “no EMI till possession” — costs Rs 1.95 crore extra over the loan life. Builders love offering this because it makes the property feel affordable during the sales pitch.
5.08 Lakh Families Are Stuck in Stalled Projects Right Now
This is not a theoretical risk. As of August 2024, PropEquity data shows 1,981 projects with 5,08,202 housing units stalled across 42 Indian cities. The number has increased from 4,65,555 in 2018 — RERA has not solved this.
City-Wise Stalled Projects and Units
| City/Region | Stalled Projects | Stalled Units | Post-RERA Completion Rate |
|---|---|---|---|
| Greater Noida | 167 | 74,645 | 74% (NCR) |
| Thane | 186 | 57,520 | 89% (MMR) |
| Gurugram | 158 | 52,509 | 74% (NCR) |
| Pune | 241 | 47,000+ | 89% |
| Noida | 103 | 41,438 | 74% (NCR) |
| Mumbai | 234 | 37,883 | 89% (MMR) |
| Hyderabad | 276 | 15,138 | 74% |
| Chennai | 24 | 11,679 | 90% |
| Bengaluru | 1,301 (KRERA) | N/A | 85% |
NCR is the worst market for under-construction risk by a massive margin. Noida and Greater Noida alone have 1,16,083 stalled units. If you are buying under-construction in NCR without researching the builder’s delivery track record on at least 3 prior projects, you are gambling.
Builder Default Case Studies — Real Families, Real Losses
Jaypee Infratech: 20,000 Units, 15+ Years of Waiting
- Buyers booked in 2010-2012. As of 2025, only 6,000 units completed out of 20,000+
- NCLT proceedings started in 2017. Suraksha Group took over in June 2024 with a Rs 5,500 crore investment plan
- Remaining 97 towers scheduled over the next 40 months — completion target 2027-2028
- Buyers have paid double their original amount in cumulative interest + rent over 15 years while waiting
Amrapali Group: 38,000 Units, Supreme Court Had to Intervene
- Rs 1,753 crore of buyer money diverted by promoters
- NBCC (government construction agency) took over under Supreme Court supervision
- ~30,000 units completed, but only 6,000-7,000 apartments actually handed over with registries
- Original promise: 2014-2016 delivery. Actual partial delivery: 2024-2025
Supertech Limited: 38,041 Customers, Twin Towers Demolished
- 10,930 units still pending delivery across 11-12 NCR projects
- Twin towers in Emerald Court demolished by Supreme Court order for violating building norms
- Defaulted Rs 1,653 crore. NCLT insolvency since March 2021
Unitech Limited: 12,130 Buyers Writing to Chief Justice
- Government-appointed board since 2020 — minimal construction progress
- 4,576 buyers opted for refunds. The rest are still waiting
- Buyers wrote to the Chief Justice of India citing “mental agony” — still no possession in 2025
WTC Noida: The 95%-Paid Scam
- Buyer Bindu Nair paid Rs 85 lakh — 95% of total price. Ten years later, no usable possession
- Rs 604 crore collected from 3,628 buyers in WTC CBD project. Only Rs 29.80 crore spent on construction (10.4% complete). Bank balance: Rs 4 lakh
- ED arrested the director in March 2025 on money laundering charges
The Tax Penalty for Buying Under-Construction
What You Lose During Construction
| Tax Deduction | Available During Construction? | Annual Benefit Lost (30% bracket) |
|---|---|---|
| Section 24(b) — Home loan interest (Rs 2L/year) | No — only after possession | Rs 60,000/year |
| Section 80C — Principal repayment (Rs 1.5L/year) | No — only after possession | Rs 45,000/year |
| Total tax benefit lost per year | Rs 1,05,000/year |
Over a 3-year construction period, you lose Rs 3.15 lakh in tax deductions. Over 5 years (delayed project), Rs 5.25 lakh.
The Critical 5-Year Rule Most Buyers Miss
If construction takes more than 5 years from the end of the financial year in which the loan was sanctioned, the Section 24(b) deduction limit drops from Rs 2 lakh to Rs 30,000 per year.
- Rs 2 lakh deduction at 30% bracket = Rs 60,000 annual tax saving
- Rs 30,000 deduction at 30% bracket = Rs 9,000 annual tax saving
- Difference: Rs 51,000 per year, every year for the remaining loan tenure
Many NCR projects have crossed this 5-year threshold. Buyers are permanently stuck with the lower deduction limit — a cost that compounds for 15-20 years.
Pre-Construction Interest Recovery — Partial, Not Full
After possession, you can claim pre-construction period interest in 5 equal installments. But:
- Subject to the overall Rs 2 lakh annual limit (combined with current year interest)
- If current year interest itself exceeds Rs 2 lakh (likely on any loan above Rs 25 lakh), the pre-construction deduction adds nothing extra
- Example: Rs 27 lakh pre-construction interest over 3 years = Rs 5.4 lakh/year deduction claim. But capped at Rs 2 lakh total. Effective recovery: minimal
Hidden Charges: How a Rs 55 Lakh Flat Becomes Rs 96 Lakh
Builders quote the “base price per square foot.” Everything else is extra.
The All-In Cost Breakdown
| Charge | Typical Range | On a Rs 55L Base-Price Flat |
|---|---|---|
| PLC (park-facing, corner unit) | Rs 1-5 lakh | Rs 2,50,000 |
| Floor rise (Rs 20-50/sqft/floor, 8th floor) | Rs 1-3 lakh | Rs 1,45,000 |
| Car parking (covered) | Rs 3-10 lakh in metros | Rs 4,50,000 |
| Club membership | Rs 2-5 lakh | Rs 2,50,000 |
| EDC/IDC | Rs 50-200/sqft | Rs 1,00,000 |
| Power backup charges | Rs 1-1.5 lakh | Rs 1,00,000 |
| IFMS/Sinking fund | Rs 50-100/sqft | Rs 50,000 |
| GST (5% on 67%) | Rs 1,84,250 | |
| Stamp duty (6%) | Rs 3,70,000 | |
| Registration (1%) | Rs 62,000 | |
| Loan processing (0.5%) | Rs 60,000 | |
| Pre-EMI (30 months) | Rs 4,95,000 | |
| Rent during construction (Rs 18K x 30 months) | Rs 5,40,000 | |
| Interior fit-out (basic) | Rs 8,00,000 | |
| Advance maintenance (24 months) | Rs 1,12,000 | |
| Total | Rs 95,18,250 |
That is 73% above the advertised Rs 55 lakh base price.
The builder’s brochure shows “Rs 5,500/sqft.” Your actual all-in cost is Rs 9,518/sqft. This is the number that matters for your ROI calculations.
The Carpet Area vs Super Built-Up Scam
Loading Factor Has Exploded Since 2019
ANAROCK data shows the gap between what you pay for and what you can live in has grown dramatically:
| City | Loading Factor 2019 | Loading Factor Q1 2025 | Change |
|---|---|---|---|
| Mumbai (MMR) | 33% | 43% | +10pp |
| Bengaluru | 30% | 41% | +11pp |
| Delhi-NCR | 31% | 41% | +10pp |
| Pune | 32% | 40% | +8pp |
| Kolkata | 30% | 39% | +9pp |
| Hyderabad | 30% | 38% | +8pp |
| Chennai | 30% | 36% | +6pp |
| National Average | 31% | 40% | +9pp |
What this means in practice:
A “1,200 sq ft” apartment (super built-up area) in Mumbai today has:
- Carpet area: 1,200 / 1.43 = 839 sq ft of livable space
- In 2019, the same 1,200 sq ft super built-up gave you 902 sq ft carpet area
- You are paying for 63 sq ft less livable space today — at higher prices per sq ft
RERA mandates that builders sell by carpet area. But there is no cap on loading factor. Builders inflate common areas — lobbies, corridors, amenity zones — to maintain high headline carpet area rates while delivering less livable space.
RERA Works for Big Developers, Fails for Everyone Else
Post-RERA Completion Rates (Projects Launched H2 2017-2018)
| City | Completion Rate | Projects Completed |
|---|---|---|
| Chennai | 90% | Best in India |
| Mumbai (MMR) | 89% | Large developers deliver |
| Pune | 89% | Consistent improvement |
| Bengaluru | 85% | Mid-tier developers lag |
| Hyderabad | 74% | Below national average |
| NCR | 74% | Still the worst major market |
| Kolkata | 70% | Lowest completion rate |
| National Average | 86% | 1,409 of 1,642 projects |
86% sounds reasonable — until you realize 14% non-completion means 36,400 housing units from this one batch alone never got delivered.
The Enforcement Problem
Winning a RERA case is easy. Collecting money is not.
- Karnataka RERA: Rs 758.8 crore in refunds approved. Only Rs 91.8 crore recovered — a 12% recovery rate
- Unpaid RERA refunds in Karnataka rose 37% in one year (Rs 486 crore to Rs 667 crore)
- Builders appeal, delay, restructure entities, or simply don’t pay
- Buyers spend 2-5 years in RERA proceedings, then another 2-3 years enforcing the order
RERA is a filter, not a guarantee. It has disciplined Godrej, DLF, Prestige, and Sobha. It has not stopped small and mid-tier builders from delaying, diverting funds, or defaulting.
The SWAMIH Fund: Government Rescue Covers Only 12% of the Problem
The government created SWAMIH (Special Window for Affordable and Mid-Income Housing) to revive stalled projects.
| Metric | Number |
|---|---|
| SWAMIH Fund 1 homes delivered | 61,000 across 110 projects |
| Total investment unlocked | Rs 37,400 crore across 127 projects |
| SWAMIH Fund 2 (announced Feb 2025) | Rs 15,000 crore, targeting 1 lakh more units |
| Total stalled units in India | 5,08,202 |
| % of problem addressed by SWAMIH 1 | ~12% |
Even if SWAMIH 2 delivers its full target, that covers only 1.61 lakh of 5.08 lakh stalled units — roughly 32%. The remaining 3.47 lakh families have no government rescue plan.
Resale Liquidity: The Exit You Cannot Take
Under-Construction
- Requires builder NOC for transfer — transfer fee Rs 50,000 to Rs 2 lakh
- Buyer pool is smaller (people hesitate buying from an individual, prefer the builder)
- Complex assignment/transfer deed instead of standard sale deed
- Banks reluctant to finance resale of under-construction from non-original buyers
- Capital gains complications if sold before possession
- If the project is delayed or builder is in trouble, zero buyers will touch it
Ready-to-Move
- Standard sale deed — no builder involvement
- Larger buyer pool (immediate occupancy, physical inspection possible)
- Banks readily finance with clear title
- Can be rented immediately, generating cash flow from day one
- Easy to price — comparable transactions in the same building or society
If there is any chance you will need to sell within 5 years — job transfer, financial distress, family reasons — buy ready-to-move only. Under-construction liquidity in a distressed scenario is effectively zero.
The OC/CC Trap: “Possession” Without Possession
Getting the keys does not mean the project is legally complete.
- ~30% of multi-story apartments in major Indian cities lack proper Occupancy Certificates
- ~40% of builders delay OC applications even after giving “possession”
- Without OC: no permanent water/electricity connections, property registration complications, potential municipal action, and banks may withhold final loan disbursals
UP-RERA mandated in May 2024 that OC/CC must be obtained before issuing possession letters. But enforcement varies by state and by project.
Always verify that the builder has obtained OC from the municipal authority — not just the “possession letter” from the builder. These are different documents. The possession letter is the builder’s internal document. The OC is the government’s confirmation that the building meets approved plans and safety standards.
When Under-Construction Actually Makes Sense
Under-construction is not always wrong. It works when all of these conditions are true:
- Builder track record: At least 3 projects delivered on time in the same city within the last 5 years. Not “announced” — delivered with OC.
- RERA registered with clear milestones: Check the project’s RERA page for construction progress photos, timeline compliance, and financial disclosures.
- Market: Chennai (90% completion), MMR (89%), or Pune (89%) — not NCR or Kolkata.
- Price discount exceeds 20%: The math above shows that a 15% discount gets wiped out by carrying costs. You need at least 20% below ready-to-move to break even at 3 years.
- Construction is 60%+ complete: The risk drops dramatically once the structure is up. Avoid booking at launch — let someone else take the early-stage risk.
- You do not need the property for at least 4 years: No immediate housing need, no relocation risk, no financial stress risk.
- You can afford full EMI (not pre-EMI): Paying full EMI from day one eliminates the pre-EMI trap and reduces total interest by 16%.
If even one condition fails, the risk-adjusted return of under-construction is negative. Buy ready-to-move and negotiate on price — sellers of ready inventory are often more flexible than builders at launch.
The Opportunity Cost Nobody Calculates
If you invest the Rs 15 lakh “discount” in financial instruments instead of locking it in under-construction property:
| Instrument | 5-Year CAGR | Rs 15L Grows To | Effective “Return” vs Under-Construction Risk |
|---|---|---|---|
| Nifty 50 Index Fund | 12% | Rs 26.4 lakh | +Rs 11.4 lakh, zero builder risk |
| SFB FD Ladder | 8.5% | Rs 22.5 lakh | +Rs 7.5 lakh, DICGC insured |
| PPF | 7.1% | Rs 21.1 lakh | +Rs 6.1 lakh, tax-free, sovereign guarantee |
| Liquid Fund | 6.5% | Rs 20.6 lakh | +Rs 5.6 lakh, instant liquidity |
Meanwhile, the under-construction flat’s “appreciation” is not guaranteed — and you are paying Rs 27-45 lakh in pre-EMI, rent, and GST to hold the position.
The financially optimal move for most buyers: buy ready-to-move, invest the difference.
City-Wise Risk Scorecard
| City | Risk Level | Stalled Units | Post-RERA Completion | Recommendation |
|---|---|---|---|---|
| Greater Noida | Very High | 74,645 | 74% | Avoid under-construction entirely |
| Noida | Very High | 41,438 | 74% | Ready-to-move only |
| Gurugram | High | 52,509 | 74% | Only Grade-A developers (DLF, Godrej) |
| Kolkata | High | N/A | 70% | Ready-to-move or Grade-A only |
| Bengaluru | Medium-High | 1,301 delayed (KRERA) | 85% | Stick to Prestige, Brigade, Sobha, Godrej |
| Hyderabad | Medium | 15,138 | 74% | Verify RERA progress before booking |
| Mumbai | Medium | 37,883 | 89% | Large developers reasonably safe |
| Thane | Medium | 57,520 | 89% | High volume — check specific project |
| Pune | Medium | 47,000+ | 89% | Generally improving, verify developer |
| Chennai | Low | 11,679 | 90% | Safest market for under-construction |
The Bottom Line
Under-construction properties are sold as “cheaper.” After you add 5% GST, Rs 27-45 lakh in dead pre-EMI interest, Rs 9-15 lakh in rent during construction, Rs 3-5 lakh in lost tax deductions, and the 14% probability (nationally) that the project never gets completed — the discount does not just disappear, it inverts into a premium.
The numbers are clear:
- 5,08,202 housing units stalled across India
- Rs 27 lakh in dead interest on a Rs 1 crore loan over 3 years of construction
- Rs 3.35 lakh GST that ready-to-move buyers pay zero
- 12% enforcement rate on RERA refund orders in Karnataka
- 14% of post-RERA projects never completed even in the best period
Buy ready-to-move. Negotiate hard. Inspect the actual flat. Verify the OC. Move in on day one. Start claiming tax deductions immediately. Sleep at night.
If you must buy under-construction, treat it as a speculative investment — not a home purchase — and only in Chennai, Mumbai, or Pune, from a developer with at least 3 delivered projects in the last 5 years.
Related reading:
- Buy vs Rent India — The Math at Every Salary Level — Rs 1 Cr flat EMI vs renting + investing the surplus. Full 20-year comparison
- True Cost of Owning a Flat — The 20-Year Bill — a Rs 1 Cr flat costs Rs 4.3 Cr over 20 years. Every hidden cost itemised
- Why EMI Interest Is More Dead Money Than Rent — Rs 80L loan = Rs 86.6L interest. Year-by-year amortization exposed
- Rental Yield India — Real Numbers for 30 Cities — average yield is 2.9%, net yield 0-1.5% after costs
- SBI vs HDFC vs ICICI Home Loan 2026 — real rates, hidden charges, MCLR trap, and which bank to pick for your profile
- FD Laddering Strategy — Get 8.5% Returns with Full Liquidity — what to do with your savings instead of parking them in under-construction EMIs
- Old vs New Tax Regime — Which Saves More — understand the Section 24 and 80C deductions you lose during construction