Buying your first flat is a major milestone. But before you focus on amenities, location, and interior design, it’s important to understand the paperwork behind the property.
Many home buyers don’t know the difference between a Sale Deed, Occupancy Certificate, Index II, or Encumbrance Certificate. As a result, they often depend entirely on builders, agents, or relatives for advice.
This guide explains the most important property documents in simple language so you know exactly what they are, why they matter, and when you should check them.
Documents You Should Check Before Buying a Flat
1. RERA Registration Certificate
RERA registration confirms that a real estate project is registered with the Real Estate Regulatory Authority.
Why It Matters
It helps buyers verify project details, completion timelines, and builder information.
Quick Takeaway
Always verify the RERA registration number before booking a flat in a new project.
2. Approved Building Plan
This document shows the construction plan approved by the local authority.
Why It Matters
It confirms that the builder is legally allowed to construct the building as planned.
Quick Takeaway
Ensure the approved plan matches what the builder is promising.
3. Land Ownership Documents
These documents establish who legally owns the land on which the project is built.
Why It Matters
A builder must have legal rights to develop the property.
Quick Takeaway
Never buy a flat without verifying land ownership.
4. Encumbrance Certificate (EC)
An EC shows whether the property has any registered financial or legal liabilities.
Why It Matters
It helps identify mortgages or other registered claims against the property.
Quick Takeaway
An EC helps confirm that the property’s title is relatively clear from registered encumbrances.
5. Commencement Certificate (CC)
A Commencement Certificate allows the builder to legally start construction.
Why It Matters
It confirms that construction has received the necessary permissions.
Quick Takeaway
Important for under-construction projects.
6. Allotment Letter
Issued by the builder after booking a flat.
Why It Matters
It confirms that a specific unit has been allotted to you.
Quick Takeaway
Keep this document safely as it contains important booking details.
7. Agreement for Sale
This agreement outlines the terms and conditions of the transaction.
Why It Matters
It specifies the property details, price, payment schedule, and possession timeline.
Quick Takeaway
Read every clause carefully before signing.
8. Payment Receipts
These receipts serve as proof of all payments made to the builder.
Why It Matters
They help resolve disputes related to payments.
Quick Takeaway
Never make payments without obtaining proper receipts.
9. Home Loan Sanction Letter
Issued by the lender after approving your home loan.
Why It Matters
It outlines the approved loan amount and key terms.
Quick Takeaway
Review the conditions before accepting the loan.
Documents to Check Before Taking Possession
10. Occupancy Certificate (OC)
An Occupancy Certificate confirms that the building is fit for occupation.
Why It Matters
It indicates that the building has been approved for occupancy by the relevant authority.
Quick Takeaway
Avoid taking possession without checking the OC status.
11. Completion Certificate
This certificate confirms that construction has been completed according to approved plans.
Why It Matters
It shows that the project has reached the completion stage.
Quick Takeaway
Particularly important in newly completed projects.
12. Possession Letter
Issued by the builder when handing over the flat.
Why It Matters
It records the official transfer of possession.
Quick Takeaway
Check the flat carefully before signing.
13. Maintenance Agreement
This document explains maintenance responsibilities and charges.
Why It Matters
It helps buyers understand future maintenance obligations.
Quick Takeaway
Review recurring charges before moving in.
Documents You Receive After Buying the Flat
14. Registered Sale Deed
The Sale Deed is one of the most important property documents.
Why It Matters
It officially transfers ownership from the seller to the buyer.
Quick Takeaway
Store the registered Sale Deed safely.
15. Index II
Index II is a registration record generated after property registration in Maharashtra.
Why It Matters
It contains key information about the transaction.
Quick Takeaway
It acts as an important ownership record.
16. Property Tax Records
These records show whether property taxes have been paid.
Why It Matters
Unpaid taxes can create complications later.
Quick Takeaway
Verify the latest tax payment status.
17. Society Share Certificate
Issued by a cooperative housing society.
Why It Matters
It confirms membership and ownership rights within the society.
Quick Takeaway
Important when purchasing a resale flat in a housing society.
Maharashtra-Specific Property Documents
18. 7/12 Extract
A land record document commonly used in Maharashtra.
Why It Matters
It contains information about land ownership and land usage.
Quick Takeaway
More relevant when understanding the land history behind a project.
19. Property Card
A government land record maintained in urban areas.
Why It Matters
It helps establish ownership details.
Quick Takeaway
Useful for verifying land-related information.
20. Non-Agricultural (NA) Order
An NA Order permits land to be used for non-agricultural purposes.
Why It Matters
Residential projects are generally developed on land approved for non-agricultural use.
Quick Takeaway
Check whether the land has the required permissions.
New Flat vs Resale Flat: What Should You Focus On?
If You're Buying a New Flat
Pay special attention to:
- RERA Registration
- Approved Building Plan
- Commencement Certificate
- Occupancy Certificate
- Completion Certificate
If You're Buying a Resale Flat
Focus on:
- Sale Deed
- Index II
- Society Share Certificate
- Property Tax Records
- Encumbrance Certificate
Quick Property Document Checklist
Before buying a flat, make sure you verify:
✅ RERA Registration
✅ Approved Building Plan
✅ Land Ownership Documents
✅ Encumbrance Certificate
✅ Commencement Certificate
✅ Agreement for Sale
✅ Occupancy Certificate
✅ Completion Certificate
✅ Sale Deed
✅ Index II
✅ Property Tax Records
✅ Society Share Certificate
Final Thoughts
Buying a flat is not just about choosing the right location or negotiating the best price. Understanding property documents is equally important.
Documents such as the RERA Certificate, Occupancy Certificate, Sale Deed, Index II, and Encumbrance Certificate help you understand the property’s legal and ownership status. Taking the time to review them carefully can save you from unnecessary complications later.
As a first-time home buyer, the more you understand these documents, the more confident and informed your property-buying journey will be.
