Aadhaar eSign API for Real Estate Brokers and Proptech
Brokers and proptech CRMs handle two kinds of paperwork: their own agreements with clients, and the property documents their clients sign. The SignYu API covers the first kind fully and the rental side of the second, so your CRM can send mandates, commission agreements and rental paperwork for Aadhaar OTP eSign. Sale agreements and sale deeds are different: Indian law does not allow them to be eSigned. Pricing is from ₹15 per signature (₹15 per signature on packs of 10 or more), with API access at ₹999/month with a 3-day free trial.
The problem with paper signing
- Commission disputes happen because the brokerage terms were agreed on a call and never signed.
- Exclusive mandates from sellers and landlords arrive weeks late or not at all.
- Rental deals need tenant, owner and broker signatures across three cities.
- Teams are unsure which property documents can legally be signed electronically.
Documents you can sign with the API
Brokerage or commission agreement
Your agreement with the buyer, seller, tenant or landlord. A services contract that can be eSigned.
Exclusive listing mandate
The owner authorises you to market the property. This is a services mandate, not a power of attorney; if it grants power to execute documents on the owner's behalf, it becomes a POA and cannot be eSigned.
Rent and leave and license agreements
For the rental side of your business, after stamp duty is paid. Registration rules still apply.
Agreement for sale and sale deed
Cannot be eSigned. Contracts for sale or conveyance of immovable property are excluded by the First Schedule of the IT Act and must be executed on paper and registered.
How the integration works
- 1
Lead turns into a deal
When a deal stage moves to Agreed in your CRM, generate the commission agreement PDF with the agreed percentage.
- 2
Create and add the client
POST /api/v1/documents, then POST /api/v1/documents/{id}/signers with the client first and your authorised signatory second.
- 3
Send
POST /api/v1/documents/{id}/send. Share the signUrl over WhatsApp from the CRM while you are still on the call.
- 4
Update the deal
On document.completed, attach the signed PDF from downloadUrl to the deal and move it to the next stage.
Legal validity
Aadhaar eSign through SignYu is issued via eMudhra and is valid under Section 3A of the Information Technology Act, 2000. The First Schedule of the IT Act excludes some documents from electronic signing: negotiable instruments other than cheques (such as promissory notes and bills of exchange), powers of attorney, trusts, wills and other testamentary dispositions, and any contract for sale or conveyance of immovable property or any interest in such property. For brokers this rules out agreements for sale, sale deeds, conveyance deeds, mortgage deeds and powers of attorney: those need paper execution, stamp duty and registration at the sub-registrar. Brokerage agreements, listing mandates that do not grant a power of attorney, and NOCs can be eSigned. For rent and leave and license agreements, see the stamp duty and registration notes on our rental page; eSign never replaces registration where the law requires it.
What it costs
A brokerage closing 80 rental deals (tenant, owner and broker sign) and 40 commission agreements (client and broker sign) a month.
| API access | ₹999 |
| 320 signatures at ₹15 | ₹4,800 |
| Total per month, GST inclusive | ₹5,799 |
Credits are bought in packs of 10 or more at ₹15 each. See how this compares with other Aadhaar eSign API providers.
Frequently asked questions
Can an agreement for sale of a flat be Aadhaar eSigned?
No. Contracts for sale or conveyance of immovable property, or of any interest in it, are excluded by the First Schedule of the IT Act. Execute them on paper with stamp duty and register them where required.
Can the broker sign as a witness on a rental agreement?
Yes. Add the broker as a signer after the tenant and owner. A document supports up to 6 signers.
Can we eSign a token or booking amount receipt?
A plain payment receipt can be eSigned. If the document is drafted as an agreement to sell the property, it falls under the exclusion and should not be eSigned.
Does SignYu integrate with our CRM?
There is no ready-made connector, but any CRM that can make HTTP requests or call a script can use the REST API, and webhooks can update the deal when signing completes.