
Registering the sale is only half of it. How membership, the share certificate and the utilities move into your name — and what to check first.
Most flats in Mumbai sit inside a cooperative housing society. When you buy a resale flat, you are buying two things: the flat itself, and the seller's membership and shares in the society. Registering the sale agreement transfers the first. The second needs its own process — and if it is skipped, you can find yourself owning a flat in a building where you are not a member.
The short answer
Before you buy, see the share certificate, a society NOC for the sale, and proof that dues are clear. After registration, apply to the society for membership transfer so the share certificate is endorsed in your name, then move the electricity, gas and property tax records across.
Before you agree to buy
Ask the seller for:
- the original share certificate in their name
- a no-objection certificate from the society for the sale
- a letter confirming maintenance and other society dues are paid up to date
- the society's bye-laws or rules on transfer and any transfer charges
- for a newer building, the occupation certificate
Also ask the managing committee — not just the seller — whether redevelopment is under discussion, whether there are any disputes or litigation, and what the monthly maintenance is. Our verification checklist covers the title side.
Registration
The sale agreement is stamped and registered at the sub-registrar's office. After registration you receive the registered document and an Index II extract, which records the transaction. Keep both safely — you will need them for the society, the utilities and, one day, your own sale. Our guide to stamp duty and registration explains that step.
Transferring the society membership
After registration, the buyer applies to the society to become a member in place of the seller. Typically this involves:
- A membership application from the buyer and a resignation or transfer application from the seller, on the society's prescribed forms.
- A copy of the registered agreement and Index II.
- Payment of any transfer charges permitted under the society's bye-laws.
- Approval at a managing committee meeting.
- The share certificate endorsed in the buyer's name, and the society's register updated.
Ask the society secretary for its exact checklist at the start — societies differ, and a missing signature can hold things up for a month.
Moving the utilities and taxes
Once the society transfer is done, change the name on:
- the electricity connection, with your supplier
- piped gas, if connected
- property tax records with the municipal corporation
- the water account, where it is billed separately
These all ask for the registered agreement and usually the society's letter, which is another reason to finish the society transfer promptly.
If you have a home loan
Your lender will usually want the society NOC and an undertaking from the society to note the bank's interest — sometimes called a lien letter. Ask the society early so it doesn't delay disbursement.
The mistakes we see most
- Paying a large advance before seeing the original share certificate.
- Assuming dues are clear because the seller says so.
- Registering the sale and never completing the society transfer.
- Not asking about redevelopment before buying in an older building.
Our legal and documentation service coordinates the whole sequence — title, registration and society transfer — so nothing is left half-done.



