Buying an apartment is a major financial decision. Before paying an advance, take time to check the property, documents, construction quality and overall cost. A polished brochure or attractive price should be the start of your research, not the end of it.
Here are 10 important things every homebuyer should check. Keep notes for each apartment you view, ask for supporting documents where relevant, and compare answers before you commit.
1. Location & Connectivity
Check how easily you can access your workplace, schools, hospitals, shopping areas and public transport. Also consider traffic, road access and the neighbourhood's overall convenience. A route that looks short on a map may feel very different during your regular travel hours.
Visit the area at more than one time of day if you can. Look at the condition of the approach road, street lighting, parking outside the building and how easy it is to enter or leave the street. Think about the trips your household makes most often rather than judging the location by a single landmark.
If you are weighing two localities, our Adyar and Kotturpuram comparison offers a way to think through everyday fit.
2. Builder’s Reputation
Research the builder's previous projects and construction quality. Check whether earlier projects were completed as promised and, if possible, speak to existing residents. Ask how the builder handled handover, defects and communication after residents moved in.
Look beyond marketing photographs. Visit a completed project if access is possible, and notice the condition of shared areas, exterior finishes, lifts and drainage. For a new project, compare what the builder has promised in writing with what is visible at the site. Record the exact specifications you are relying on so they can be checked against the agreement later.
A strong reputation can support your confidence, but it does not replace checking the documents and the specific apartment you plan to buy.
3. Property Documents
Make sure the property's title and ownership documents are properly verified. Important records can include the parent documents, sale deed, Encumbrance Certificate (EC), Patta and other relevant land records. The exact set depends on the property's history and whether it is a new or resale apartment.
Ask for clear copies early enough for an independent property lawyer to review them. Compare the seller's name, property description, survey details and apartment details across the available papers. If something is missing or inconsistent, ask for an explanation and supporting evidence before making a significant payment.
Our Chennai flat document guide explains the records in more detail. You can also use the Tamil Nadu registration portal's EC guidance when checking the EC process.
4. RERA Registration
If RERA registration is applicable to the project, verify its registration details on the official Tamil Nadu RERA portal. Check the approved project information, developer details and declared completion timeline. Match the registration number to the correct project and phase, rather than relying only on a number printed in an advertisement.
Ask what the recorded timeline means for the apartment you are considering, particularly if construction is still underway. Compare the information supplied by the developer with the information available from the regulator and raise any differences before you pay an advance.
RERA registration is one part of your checks. Keep separate questions for title, planning permission, construction progress and contract terms, and have a professional confirm which requirements apply to the specific project.
5. Approvals
Check whether the required planning and building approvals have been obtained. For properties in Chennai, verify the relevant CMDA or local planning authority approvals applicable to the project. Ask for copies and approval references; a verbal assurance alone is difficult to verify later.
The planning authority and local body may have different roles. Ask the builder or seller which permissions apply to this building, and have a lawyer or qualified planning professional check the answer against the documents. The CMDA planning permission approval details are a useful starting point for applicable CMDA records.
A planning approval should be read alongside the other property papers. It should not be treated as proof of clear title or of every aspect of the building's condition.
6. Approved Building Plan
Compare the actual apartment and building with the approved plan. Check the floor, unit, number of floors, common areas and other important details before making a commitment. Ask for the version of the plan that applies to the apartment being offered, including any approved revisions.
Walk through the property with that plan in mind. Note the position of walls, balconies, access paths, lifts and parking. If a finished apartment differs from the plan, ask what was changed and whether the change has the required approval. A professional can help assess differences that are hard to judge from a site visit alone.
For a property still under construction, keep a copy of the agreed plan and specifications so you can compare them again at handover.
7. Flat Size & Layout
Don't look only at the advertised square footage. Understand the carpet area, built-up area and actual usable space, and check whether the layout suits your family's needs. Request a floor plan with dimensions and measure any space that matters to your furniture or daily routine.
Consider where you will store household items, whether bedrooms have usable wall space, how much natural light reaches the living areas and whether the kitchen and bathrooms work for your household. A larger quoted area does not automatically mean a more comfortable home.
If you are deciding between configurations, the 2 BHK versus 3 BHK guide can help you compare actual space needs and budget. Make the same room-by-room notes for each apartment you shortlist.
8. Parking & Common Areas
Confirm whether the apartment comes with a designated parking space and understand how it is documented. Check where the space is located, whether your vehicle fits comfortably and how you reach it from the entrance. Ask how visitor parking and any additional vehicle needs are handled.
Also check the condition and availability of lifts, staircases, corridors and other common facilities. Walk the shared areas rather than seeing only the sample flat. Notice lighting, cleanliness, accessibility, maintenance and any unfinished work that would affect everyday use.
If the brochure lists amenities, ask which are already available, which are still planned and who will maintain them. Get any parking or amenity commitment that matters to you recorded clearly in the transaction documents.
9. Total Cost
The advertised apartment price may not be the complete cost of buying the property. Ask about registration, applicable taxes, parking, maintenance, interiors and other additional charges before finalising your budget. Request an itemised cost sheet and check which amounts are due at each stage.
Include the expenses that come immediately after possession, such as essential fittings, moving costs and any work needed to make the flat usable for your family. Ask whether charges shown as estimates could change and which payments are refundable if the purchase does not proceed.
Compare apartments using the total amount you expect to pay, not only the headline price. This is particularly helpful when two homes have different parking arrangements, maintenance charges or included specifications.
10. Water, Power & Maintenance
Ask about the source and reliability of water supply, power backup and waste management. Also understand the monthly maintenance charges and what facilities or services they cover. These recurring conditions can shape daily life as much as the apartment's layout.
For a completed building, ask residents how the systems work in practice. Check whether backup power covers the flat, only shared areas or selected circuits. Ask how water is stored and supplied, who manages routine repairs and how maintenance decisions are made.
If the building is new, request the planned arrangements in writing and ask when they will be operational. Include likely monthly outgoings in your affordability calculation, especially when comparing buildings with different amenities.
Before You Buy
Visit the property personally and compare it with similar apartments in the area. Go beyond a quick walkthrough: note what you can verify, what the seller has promised and which questions still need an answer. If possible, revisit a shortlisted home before deciding.
Most importantly, get the relevant property documents reviewed by an independent property lawyer before making a significant payment. Ask the lawyer to explain any missing records, risks or terms you do not understand. Make sure the property details in the paperwork match the apartment you have inspected.
Our practical Adyar flat-buying guide offers another way to compare a property's location, building and daily fit alongside these checks.
Conclusion
Buying an apartment in Chennai is a major decision, so it is important to look beyond the price and appearance of the property. Check the location, builder, approvals, documents, apartment details, parking and total cost before making a decision.
Take time to visit the property, compare your options and get the important documents legally verified. A little research before buying can help you choose a home that suits your budget, lifestyle and future needs. Keep copies of the answers and documents you receive so the final agreement can be compared with what was discussed.
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