Buying Under-Construction Property in Coimbatore: RERA, Risks & Checklist
A comprehensive guide to buying under-construction property in Coimbatore — advantages, risks, RERA protections, how to verify builder credibility, payment plan structures, home loan disbursement for under-construction, GST rates, and a detailed pre-possession checklist.
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Under-construction property in Coimbatore typically costs meaningfully less than ready-to-move homes but carries delay and builder risk. TNRERA registration, the 70% escrow rule, delay interest at SBI MCLR plus 2%, and 5-year structural defect liability protect buyers. Budget for 1% or 5% GST and stage-wise loan disbursement with pre-EMI interest during construction.
Key takeaways
- Under-construction homes are typically priced meaningfully below comparable ready properties, and buyers capture appreciation during the 2–4 year construction period.
- Verify the TNRERA registration number on rera.tn.gov.in before paying any booking amount — registration is mandatory for projects above 500 sqm or 8 units.
- If the builder misses the RERA-committed possession date, you can claim interest at SBI MCLR + 2% (roughly 10–11%) per month of delay, or exit with a full refund plus interest.
- Always prefer a construction-linked payment plan (CLP) over a time-linked plan — you pay only when work is actually done.
- GST is 1% for affordable housing (carpet area up to 90 sqm and value up to ₹45 lakh in Coimbatore) and 5% for other residential — ready-to-move property with a Completion Certificate attracts zero GST.
- Never accept possession without the Occupancy Certificate, and report every snag in writing — RERA gives you a 5-year structural defect liability period with a 30-day repair obligation.
Why do buyers choose under-construction property?
Under-construction properties remain popular in Coimbatore’s growth corridors like Saravanampatti, Kalapatti, Kovaipudur, and Thudiyalur. Here is what makes them attractive:
Lower entry price: under-construction properties are typically priced below ready-to-move properties in the same locality. Builders offer early-bird pricing to fund construction — the earlier you book, the lower the price. Price appreciation during construction: by the time the project is completed (2–4 years), market prices typically rise. Buyers who entered early capture this appreciation — effectively a built-in return even before occupying the property. Payment flexibility: construction-linked payment plans let you pay in stages tied to construction milestones — foundation, slab completion, plastering, and so on — reducing the immediate cash burden compared to a ready property where you pay the full amount upfront.
Customization: for pre-launch or early-stage bookings, builders often allow interior customization — choice of flooring, kitchen layout, wall colours, electrical point placement, or minor plan modifications. Modern amenities and specifications: new projects typically feature contemporary design, modern amenities (swimming pool, gym, clubhouse, EV charging), earthquake-resistant construction as per current BIS codes, and better energy efficiency than older buildings. GST input tax credit: for commercial under-construction purchases, builders can pass on ITC (input tax credit) benefits, reducing the effective cost in some scenarios.
What are the risks of buying under-construction?
The same flexibility and lower pricing come with real risks that every Coimbatore buyer must assess before committing: • Delivery delays — the most common risk: project delays are endemic in Indian real estate. Even with RERA, builders frequently miss possession dates by 1–3 years. • Builder default or financial trouble: if the builder runs into financial difficulties, the project may stall entirely. In severe cases (builder insolvency), buyers can face multi-year delays and costly legal battles. RERA’s 70% escrow rule mitigates this, but imperfect enforcement means risks remain. • Specification downgrades: what was promised in the brochure — granite flooring, imported tiles, specific brand fittings — may be substituted with cheaper alternatives at handover. Always verify that the sale agreement specifies materials and brands, not just generic descriptions. • Plan changes: the approved floor plan may change during construction — a corridor becomes narrower, a window disappears, a promised amenity is dropped. Under RERA, major changes require two-thirds buyer consent, but minor changes sometimes slip through. • Quality issues: quality control during construction is difficult to monitor remotely. Common issues include uneven flooring, leaky plumbing, poor waterproofing, weak concrete, and misaligned tiles. A professional snag inspection before possession is essential. • Longer wait: for buyers who need to move in soon, under-construction is not suitable — a 2–4 year wait before possession makes financial planning more complex.
The double financial burden of delays
During a delay you are paying both rent for your current home and pre-possession interest (pre-EMI) on the home loan — a significant double financial burden that can stretch for years. Stress-test your budget for a 1–3 year delay before booking.
How does RERA protect under-construction buyers?
The Real Estate Regulation and Development Act (RERA) provides substantial protection for under-construction property buyers in Tamil Nadu. Know your rights under TNRERA before you book: • Mandatory project registration: all projects above 500 sqm or 8 units must be registered with TNRERA (rera.tn.gov.in) before any marketing or sale. • 70% escrow account rule: builders must deposit 70% of all collections (booking amounts and installments) into a dedicated project escrow account, withdrawable only for construction-related expenses — ensuring your money is used for the project and not diverted. • Carpet area transparency: builders must quote prices in carpet area (usable floor area, excluding walls), preventing the common practice of inflating "super built-up area" to make properties appear larger. • Penalty for delayed possession: if the builder misses the RERA-committed possession date, they owe you interest at SBI MCLR + 2% (approximately 10–11%) for each month of delay. You can choose to stay in the project and claim this interest, OR exit and get a full refund with interest. • 5-year structural defect liability: after possession, any structural defects reported within 5 years must be rectified by the builder free of charge within 30 days. • Quarterly progress reports: builders must upload construction progress updates to the TNRERA portal quarterly — publicly accessible at rera.tn.gov.in.
Tip
Always verify the RERA registration number on rera.tn.gov.in before paying any booking amount — and keep tracking your project’s quarterly progress reports on the portal after you book.
How do you verify a builder’s credibility?
RERA registration is necessary but not sufficient to assess a builder’s reliability. Do additional due diligence on the developer before committing. For a data-backed second opinion, run the project through AVnester’s investment scorecard — it rates a property or project 0–100 on location, builder, pricing and growth factors.
Builder due-diligence checks
Visit completed projects
Visit 2–3 completed projects by the same builder in Coimbatore. Talk to actual residents: were there delays? Were promises kept? How is maintenance quality? Is the RWA functional? Compare the brochure promises for those projects against what was actually delivered.
Check the TNRERA complaint history
Search the builder’s name on rera.tn.gov.in and review the Complaints section. Multiple complaints, especially unresolved ones, are a red flag.
Assess financial health
Is the builder funding construction from collections, or have they tied up a construction finance loan? (A bank-funded project has the bank’s skin in the game — an additional quality control layer.) Is the project already under construction (foundation complete) or selling on renders alone? How many units are sold versus total project size? Very low sales may indicate financial distress.
Visit the construction site
Visit during working hours. Active construction with workers, material stocks, and visible progress is reassuring. A stalled site with no activity is a warning sign.
Search online reviews
Search the builder’s name with "review", "delay", "complaint" on Google and housing forums like MagicBricks and 99acres. Real buyer experiences are often documented online.
Check the bank-approval track record
Check if the project is on the approved list of at least 2–3 major banks (SBI, HDFC, Indian Bank) in Coimbatore. Banks do their own due diligence — their approval is a positive signal.
Construction-linked or time-linked payment plan — which is safer?
Under-construction properties in Coimbatore are typically sold under two payment structures. Understanding the difference helps you manage cash flow and negotiate better.
| Item | Cost Range | Notes |
|---|---|---|
| Booking | 5–10% | On agreement signing |
| Foundation completion | 10–15% | |
| Ground floor slab | 10% | |
| Each subsequent floor slab | 5–8% per floor | |
| Plastering and brickwork completion | 10% | |
| Flooring and finishing | 10% | |
| Possession | 5–10% |
| Aspect | Construction-Linked Plan (CLP) | Time-Linked Plan |
|---|---|---|
| Payment trigger | Specific construction milestones | Calendar schedule (e.g. 20% on booking, 20% after 6 months, 20% after 12 months) regardless of progress |
| Advantage | You pay only when work is done — natural protection against builder inaction; if construction stalls, your next installment does not fall due | Often offered with a slightly lower price — builders prefer the cash flow certainty |
| Disadvantage | Some milestone definitions are vague — "super structure completion" can mean different things; ensure milestones are clearly defined in the agreement | You pay even if construction lags behind schedule — risky if the builder has cash management issues |
| Bank fit | Most banks disburse under-construction loans in tranches as milestones are certified by their technical valuer — aligns naturally with CLP | Misaligned with bank stage-wise disbursement |
Recommendation
Always prefer CLP over time-linked plans for under-construction properties in Coimbatore — the protection it offers is worth more than any small price discount on time-linked plans.
How does the home loan work — pre-EMI and stage disbursement?
Banks do not disburse the full loan amount upfront for under-construction properties. The loan is released in installments as construction progresses: • Disbursement 1: after foundation and sub-structure completion • Disbursement 2: after slab completion up to a certain floor • Disbursement 3: after brick work and plastering • Disbursement 4 (final): on possession / completion certificate Before each disbursement, the bank’s technical valuer visits the site to certify the stage completion. Processing each disbursement request takes 5–10 working days — plan this timeline with your builder.
Pre-EMI interest: during construction you pay "pre-EMI" — interest only on the disbursed loan amount, not the full EMI. As each installment is disbursed, your monthly pre-EMI amount increases. Example: total loan ₹50 lakh at 9%. After Disbursement 1 (₹15 lakh), monthly pre-EMI = ₹15,00,000 × 9% ÷ 12 = ₹11,250. After full disbursement, the full EMI (principal + interest) = ₹44,986. Model your own pre-EMI and full-EMI schedule with the EMI calculator before signing the payment plan.
Full EMI (principal + interest) begins after the final disbursement — typically at possession. Some banks start the full EMI 6 months after the first disbursement regardless of construction stage — check your loan agreement carefully.
Tax treatment of pre-EMI interest
Pre-EMI interest paid during construction is not deductible in those years. It is aggregated and deductible in 5 equal installments from the year of possession under Section 24(b). Plan your tax projection accordingly.
How much GST applies to under-construction property?
GST applies to under-construction properties but not to ready-to-move properties with a Completion Certificate. This is an important cost to factor into your budget.
| Item | Cost Range | Notes |
|---|---|---|
| Affordable housing (under-construction) | 1% GST without ITC | Carpet area up to 60 sqm in metro cities, up to 90 sqm in non-metro cities like Coimbatore, and value up to ₹45 lakh |
| Non-affordable residential (under-construction) | 5% GST without ITC | Anything above the affordable housing thresholds |
| Commercial under-construction | 12% GST with ITC | |
| Ready-to-move (with Completion Certificate) | 0% GST | Once the builder obtains the CC/OC, subsequent sales attract zero GST — why some buyers prefer ready property |
What "without ITC" means: before April 2019, builders could pass on input tax credit from construction materials to buyers, reducing the effective GST rate. Since April 2019, the reduced rates (1% and 5%) come without ITC, meaning the builder absorbs input costs within their pricing. GST 2.0 (September 2025): the GST Council’s September 2025 rate overhaul left the 1% and 5% residential rates untouched, but cut GST on cement from 28% to 18% — a meaningful input-cost relief for builders that strengthens your negotiating position on fresh bookings. Affordable housing in Coimbatore: as a non-metro city, an apartment qualifies as affordable housing if the carpet area is up to 90 sqm (about 969 sq ft) and the value is up to ₹45 lakh. Many 1BHK and 2BHK apartments in areas like Sulur, Kalapatti, and Thudiyalur fall within this band, attracting only 1% GST. Working in square feet? Convert carpet-area limits with the area converter. GST is on construction value only: GST applies to the construction portion of the sale — not to the land value. When a composite sale agreement specifies the split between land and construction, only the construction portion attracts GST. If no split is mentioned, one-third of the total price is treated as land value (excluded from GST) per GST notification. Remember GST is only one closing cost — stamp duty and registration apply on top; estimate them with the stamp duty calculator.
What should you check before accepting possession?
Before you accept possession of an under-construction property in Coimbatore, go through this checklist systematically. Builders are more responsive to snags before possession than after.
Legal documents to receive from the builder
Occupancy Certificate (OC) / Completion Certificate (CC)
From DTCP or CCMC — mandatory. Do not accept possession without the OC.
Allotment letter, sale agreement, and registered sale deed
Original RERA certificate
Building plan approval copy
NOCs from the water board, electricity board, and fire department
Society or apartment association formation documents
Or the builder’s written commitment to form one
Physical inspection of the apartment
Measure the carpet area with a tape
Verify against the sale agreement — report any shortfall before signing the possession letter
Check all windows and doors
They must open, close, and lock smoothly
Test every electrical switch, socket, and light fitting
Test all taps and check water pressure on each floor
Flush toilets
Check for leaks and drainage speed
Check for cracks in walls, floors, and ceiling
Especially near structural columns and beams
Test the lift
With and without load
Verify the parking slot
Physically marked and accessible
Walk through all promised amenities
Gym, pool, clubhouse, children’s play area — confirm completion
Report every snag in writing
Under RERA you have 5 years from possession to report structural defects, and the builder has 30 days to fix reported defects. Report every snag in writing (email + WhatsApp + hard copy letter) before and on possession day — verbal reports are not enforceable. Also ensure the electricity meter (TANGEDCO for Coimbatore) and water connection are in your name before moving in.
Frequently Asked Questions
Is GST payable on a ready-to-move property?
No. Once the builder obtains the Completion Certificate (CC/OC), the property is "ready" and subsequent sales attract zero GST. GST of 1% (affordable) or 5% (other residential) applies only while the property is under construction.
What can I do if the builder delays possession?
If the builder misses the RERA-committed possession date, TNRERA entitles you to interest at SBI MCLR + 2% (approximately 10–11%) for each month of delay. You can stay in the project and claim this interest, or exit and get a full refund with interest.
What is pre-EMI and when does the full EMI start?
Pre-EMI is interest only on the loan amount disbursed so far — for example ₹11,250 per month on a ₹15 lakh first disbursement at 9%. The full EMI (principal + interest) begins after the final disbursement, typically at possession, though some banks start it 6 months after the first disbursement — check your loan agreement.
Can I claim a tax deduction on pre-EMI interest?
Not during construction. Pre-EMI interest is aggregated and becomes deductible in 5 equal installments starting from the year of possession, under Section 24(b).
What is the 70% escrow rule?
Builders must deposit 70% of all collections — booking amounts and installments — into a dedicated project escrow account that can only be used for construction-related expenses. This RERA safeguard ensures your money funds the project rather than being diverted.
Under-construction jargon, decoded
- RERA / TNRERA
- The Real Estate (Regulation and Development) Act and its Tamil Nadu authority (rera.tn.gov.in) — mandates project registration, the 70% escrow, delay compensation, and defect liability.
- Carpet area
- The usable floor area of the home excluding walls — the only measure RERA allows builders to quote prices in.
- CLP (Construction-Linked Plan)
- A payment plan where installments fall due only when specific construction milestones (foundation, slabs, plastering) are completed.
- Pre-EMI
- Interest-only payments on the portion of the home loan disbursed during construction, before the full EMI begins.
- OC / CC
- Occupancy Certificate / Completion Certificate — the DTCP or CCMC document certifying the building is complete and fit for occupation; never accept possession without it.
- ITC (Input Tax Credit)
- GST credit on construction inputs; residential rates of 1% and 5% since April 2019 come without ITC, while commercial at 12% retains it.
- Escrow account
- The dedicated project bank account into which builders must deposit 70% of buyer collections, withdrawable only for construction expenses.
- Defects Liability Period
- The 5-year window after possession during which the builder must fix reported structural defects free of charge within 30 days.
Legal note
This guide is general information for Coimbatore property buyers, not legal, tax, or financial advice. RERA rules, GST rates, and bank policies are revised periodically — confirm current requirements on rera.tn.gov.in and gst.gov.in, and engage a property advocate before booking any under-construction property.
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