How to Buy a Flat in India (2026): Complete Buyer’s Guide, RERA Checklist & Home Loan Rates

Buying a flat is typically the single largest purchase most Indians ever make — and the process involves far more than just liking the layout and negotiating the price. This complete guide walks through every stage of buying a flat in India, from initial research through final possession.

Part 1: Resale Flat vs Under-Construction Flat

Factor	Resale Flat	Under-Construction Flat
Possession	Immediate	Delayed, tied to construction timeline
Physical inspection	Possible before purchase	Not possible — relying on sample flat/plans
Pricing	Typically higher (established, ready)	Often lower, with milestone-linked payment plans
GST	Generally exempt (with completion certificate)	Applicable (1% affordable housing, 5% others, indicative rates)
Key risk	Hidden maintenance issues, unclear title history	Delivery delays, project stalling, quality gap vs promise
Best for	Buyers wanting certainty and immediate move-in	Buyers prioritizing price and willing to accept timeline risk

Part 2: Verifying RERA Registration

For any under-construction or recently completed project, verify RERA (Real Estate Regulatory Authority) registration on your state’s official RERA portal. RERA registration confirms the developer has secured necessary approvals, discloses the promised completion date, and is legally accountable for project delays and quality commitments — never proceed with an unregistered project where registration should apply. The RERA listing also shows the project’s registered carpet area, sanctioned plans, and any past complaints filed against the developer — all worth reviewing before you pay any booking amount.

Part 3: Legal Due Diligence Checklist

• Verify the developer’s or seller’s clear title to the property
• Obtain an encumbrance certificate confirming no pending loans or legal claims
• Check the building’s occupancy certificate (OC) and completion certificate (CC) status
• Verify approved building plans match actual construction
• Confirm society or association registration status, if applicable
• Review the sale agreement carefully for payment schedule, possession date, and penalty clauses for delays

Part 4: Understanding Carpet Area, Built-Up Area, and Super Built-Up Area

Carpet area is the actual usable floor space within your flat’s walls. Built-up area adds wall thickness and balcony space — typically 10–15% more than carpet area. Super built-up area further adds a proportional share of common areas like lobbies, staircases, and amenities — often 20–30% more than carpet area, and sometimes higher in amenity-heavy projects. RERA now mandates that pricing be quoted based on carpet area, making cross-project comparisons more transparent than in the past — always confirm which area figure a quoted price is actually based on, and ask for the exact carpet-to-super-built-up ratio (the “loading factor”) before comparing price-per-square-foot across projects, since a lower headline rate on a high-loading project can still mean less usable space for your money.

Part 5: Home Loan Financing

Most banks finance 75–90% of a flat’s value, with the remainder due as your down payment. Get a loan pre-approval before finalizing your flat search, which clarifies your realistic budget and strengthens your negotiating position with sellers or developers.

Indicative Home Loan Rates (2026)

Lender	Starting Rate (p.a.)
HDFC Bank	~7.90%
LIC Housing Finance	~7.15%
Bajaj Housing Finance	~7.15%
Tata Capital / ICICI Home Finance	~7.50%
Axis Bank	~8.35% – 11.90% (varies by loan amount/profile)
Sammaan Capital (formerly Indiabulls Housing)	~8.75%

Rates are indicative and change with RBI repo rate movements; always compare current offers across at least 3–4 lenders rather than defaulting to your existing bank. Home loan rates are meaningfully lower than personal loan or gold loan rates because the property itself serves as collateral.

Compare interest rates, processing fees, and prepayment terms across multiple lenders rather than defaulting to the first offer — even a 0.5% rate difference on a 20-year home loan can mean lakhs of rupees in additional interest over the full tenure.

Part 6: Registration, Stamp Duty, and Associated Costs

Beyond the flat’s purchase price, budget for stamp duty (typically 4–8% depending on state), registration fees (around 1%, sometimes capped), GST on under-construction properties, society formation or transfer charges, and home loan processing fees. Total additional costs commonly add 10–13% on top of the quoted flat price. For the complete state-wise stamp duty and registration rate table, the calculation formula, and a full step-by-step registration walkthrough, see our Stamp Duty & Property Registration Charges Guide.

Part 7: Physical Inspection Checklist (Resale and Ready-to-Move Flats)

• Check water seepage signs on ceilings and walls, particularly in bathrooms and balconies
• Test all electrical points, switches, and the main electrical panel
• Verify water pressure and drainage functionality
• Inspect for cracks in walls or flooring that might indicate structural issues
• Check natural lighting and ventilation across different times of day if possible
• Confirm parking allocation and society amenities match what was represented
• Ask for the last 12 months of maintenance and utility bills to gauge ongoing costs
• Check mobile network signal strength and internet/broadband availability in the unit

Part 8: Possession and Post-Purchase Steps

• Conduct a thorough handover inspection before signing the possession letter
• Verify all promised fittings, fixtures, and amenities are in place
• Complete society membership formalities and utility connection transfers
• Apply for property mutation to update municipal records in your name — essential for future property tax billing and resale
• Update your address across relevant government and financial records
• Retain all purchase, registration, and loan documentation securely, including digital backups

Frequently Asked Questions

Is GST applicable on flat purchases?
GST typically applies to under-construction properties (commonly 1% for affordable housing, 5% for other residential under-construction units, subject to current rates), while ready-to-move flats with a completion certificate are generally exempt from GST.

What happens if a developer delays possession beyond the RERA-committed date?
RERA entitles buyers to compensation or interest for delays beyond the registered timeline, and buyers can file complaints with the state RERA authority if developers don’t honor this obligation.

Should I buy a flat without an Occupancy Certificate?
This is risky — without an OC, the building may not be legally fit for occupation, utility connections can be denied, and resale or loan refinancing later can become significantly complicated.

What’s the difference between carpet area and super built-up area, in practice?
Carpet area is what you actually live in; super built-up area includes your share of hallways, lobbies, and amenities. Since RERA mandates carpet-area-based pricing, always ask for the loading factor (the gap between the two) to fairly compare projects with different amenity levels.

How much should I budget beyond the flat’s quoted price?
Plan for roughly 10–13% on top of the price — covering stamp duty, registration, GST (if under-construction), and incidental legal/processing charges. See our Stamp Duty Guide for exact state-wise figures.

Can My Advisers help me buy a flat with full due diligence?
Yes — our House & Flats team handles RERA verification, legal due diligence, home loan comparison, and possession-stage support end-to-end. Request a free consultation.

How My Advisers Can Help

My Advisers offers complete flat-buying consultancy across India — including RERA verification, legal due diligence, home loan comparison, and possession-stage support — so you can purchase your flat with full confidence and zero unwelcome surprises after the deal closes.