Summary: Buying an apartment involves checks across five areas: legal documents, builder reputation, construction quality, financial costs (including hidden ones), and location fundamentals. Most buyers focus on price and floor plan — the experienced ones check all five. This checklist covers everything from RERA verification to maintenance cost estimation, in the order you should evaluate them.

The difference between a good apartment purchase and a bad one is usually not price — it's what the buyer checked (or didn't check) before signing. This guide covers every critical checkpoint in the order that matters most, starting with deal-breakers and moving to quality-of-life factors.

Phase 1: Legal Checks (Deal-Breakers)

These are non-negotiable. A failure on any of these should stop the purchase.

RERA registration

Every legitimate project must be registered with the state RERA authority. In Karnataka, verify on the K-RERA portal (rera.karnataka.gov.in). Check the registered completion date, developer details, and project status. No RERA = walk away.

Title deed and ownership chain

The developer must have clear ownership of the land. Request the title deed and have an independent lawyer (not one recommended by the builder) verify the ownership chain going back at least 13 years. Gaps in the chain, GPA-based sales, or disputed ownership are red flags.

Encumbrance Certificate

Obtain an EC for the last 13–30 years from the Sub-Registrar's office. This reveals mortgages, liens, court orders, or legal disputes on the property. Developers commonly mortgage land for construction finance — this is normal, but the mortgage should be released for your specific unit before registration.

Approved building plan

The building plan must be approved by the local authority (BBMP in Bangalore, BDA in BDA areas). Ask for a copy. Verify the approved plan matches the actual construction — number of floors, setbacks, unit count.

Occupancy Certificate (for ready projects)

If the apartment is ready to move in, the developer must have an OC from the municipal authority. Without an OC, the building is legally not habitable, and you may face issues with utility connections, insurance, and resale.

Phase 2: Builder Reputation

Track record

How many projects has the builder completed and handed over? A builder with no completed projects is a high risk regardless of how impressive the show flat looks. Visit a completed project occupied for 2+ years to assess real-world quality.

Delivery history

Check if previous projects were delivered on time. Delays of 6–12 months are common in India. Delays of 2+ years are a warning. Check the K-RERA portal for registered completion dates vs. actual handover dates.

Financial health

For listed builders, review quarterly financial reports. For private builders, check for PE backing or a long history of completed projects. A financially stressed builder is the biggest risk to project completion.

Legal disputes

Search for the builder's name on consumer forums (consumer complaints court), RERA complaint records, and news reports. One or two disputes are normal for large builders. A pattern of disputes is a warning.

Phase 3: The Apartment Itself

Super built-up vs. carpet area

Builders quote prices on super built-up area, which includes common areas, walls, and balconies. Your actual usable space is the carpet area — typically 65–72% of the super built-up area. Under RERA, the carpet area must be disclosed. Calculate price per carpet sq. ft. to compare projects meaningfully.

Floor plan evaluation

• Room sizes: Can your existing furniture fit? Measure, don't guess.

• Kitchen layout: Is there counter space, ventilation, and a service area?

• Balcony utility: Is it usable or just a narrow ledge counted in area?

• Cross-ventilation: Does the unit have openings on at least two sides?

• Natural light: Check window placement and facing direction. West-facing units get harsh afternoon sun.

• Bathroom count: Ensure attached bathrooms where you need them.

Floor selection

Higher floors offer better views and ventilation but cost more (floor rise charges: ₹30–80/sq. ft. per floor). Ground and lower floors are easier to evacuate and cheaper. Middle floors (5th–12th) often offer the best balance.

Facing and view

East-facing units get morning sun (preferred in India). North-facing gets indirect light throughout the day. West-facing gets strong afternoon heat. South-facing varies by latitude. Also check what's in front of your unit — an adjacent tower 15 metres away eliminates the "view" regardless of floor.

Phase 4: Financial Due Diligence

Total cost, not just base price

The base price per sq. ft. is only the beginning. Add:

• GST: 5% on under-construction (no ITC) or 1% for affordable housing

• Registration and stamp duty: ~6% of property value in Karnataka

• Floor rise charges: ₹30–80/sq. ft. per floor above a base floor

• Parking: ₹3–8 lakh for covered parking (sometimes "included," often extra)

• Amenity/maintenance deposit: ₹1–3 lakh upfront

• Legal charges: ₹50,000–2 lakh for documentation and registration

• Interior fit-out: ₹5–15 lakh depending on scope

Total additional costs typically add 15–25% to the base price. Budget for this upfront.

Monthly maintenance

Gated communities charge ₹3–8/sq. ft. per month for maintenance. A 1,500 sq. ft. apartment = ₹4,500–12,000/month. This is a permanent recurring cost — factor it into your affordability calculation alongside your EMI.

Loan eligibility

Banks typically lend 75–80% of the property value (not the agreement value if it differs). Your EMI should not exceed 40–45% of net monthly income. Get pre-approval before shortlisting to avoid discovering budget gaps after you've emotionally committed.

Phase 5: Location Fundamentals

Daily commute

The single most important location factor. Drive the route from the apartment to your workplace during actual commute hours (8:30–9:30 AM, 6:00–7:30 PM). Google Maps estimates are averages — your daily reality will be the peak traffic time.

Social infrastructure

• Schools: Not just distance, but admission availability and bus routes

• Hospitals: 24/7 emergency facility within 15 minutes

• Groceries and daily needs: Supermarket, pharmacy, and ATM within 5 minutes

Future development

Check the area's master plan zoning. What's the vacant land next to your project zoned for? If it's zoned commercial or industrial, expect noise, traffic, and view obstruction. Don't rely on the developer's claim about future developments — verify from the planning authority.

Water and power

In Bangalore, Cauvery water supply availability varies by area. Some peripheral locations rely on borewells and tanker water. Check the project's water source, backup power (generator capacity vs. number of units), and sewage treatment arrangement.

The One-Page Checklist