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Certyneo

Electronic Signature for Real Estate Agencies

Mandates, leases, purchase agreements, inventory reports: how real estate agencies accelerate their transactions with electronic signature.

Certyneo Team3 min read

Certyneo Team

Writer — Certyneo · About Certyneo

Real Estate: A Sector with High Contract Volume

Sales mandates, property management mandates, leases, purchase agreements, inventory reports, amendments: a real estate agency processes hundreds of documents per month. Electronic signature drastically shortens transaction cycles.

Commonly Signed Documents

  • Sales Mandate (exclusive, non-exclusive, semi-exclusive)
  • Property Management Mandate
  • Commercial lease, professional lease
  • Purchase agreement / promise of sale (if entrusted to the agency, otherwise notary)
  • Entry and exit inventory reports
  • Joint guarantor contracts
  • Lease amendments (tenant change, rent adjustment)

For a mandate or a lease, advanced signature (AES) is the standard — significant contractual stake, long-term rental relationship. Inventory reports can be in simple electronic signature (SES).

Purchase agreements generally go through the notary who issues their own qualified signature.

Benefits for the Agency

  • Remotely signed mandates: no need for an appointment at the agency to collect the seller's signature
  • Accelerated leases: a file validated in the morning, lease signed in the afternoon, tenant in place the next day
  • Fewer no-shows: the signature rate increases significantly when the tenant can sign from their couch
  • Centralized complete file: lease + guarantee + inventory reports in one space

Integration with Real Estate Software

Agencies use Apimo, Hektor, PERISCOPE, Immofacile. Modern electronic signature interfaces via API to generate documents, send for signature, and retrieve the signed PDF into the client file.

Common Mistakes

  • Sending a lease without mandatory annexes (EPC, diagnostics, information notice)
  • Using SES for an exclusive mandate (weak proof in case of dispute)
  • Not keeping the audit trail (lease duration + 5 years)
  • Having the lease and guarantee signed separately (risk of inconsistency)

Concrete Case: Remote Lease Signature

An apartment in Paris assigned to a tenant based in Lyon. Timeline:

  • Monday morning: file validated by the agency
  • Monday 10am: sending via AES of lease + annexes + joint guarantee (3 signers: tenant, guarantor, landlord)
  • Monday 3pm: all signed
  • Tuesday: key handover

Three weeks gained compared to the traditional paper cycle.

How Certyneo Helps You

Certyneo offers a solution tailored to real estate: pre-configured templates for mandates, leases, inventory reports, advanced signature by default, integrations with major real estate software, and long-term archiving compliant with legal duration.

Discover Certyneo's electronic signature solution

FAQ

Can a residential lease be signed electronically?

Yes, the ALUR and ELAN laws do not prohibit it. AES is recommended.

Must diagnostics be attached?

Yes, EPC, ERP, asbestos, lead depending on the case — in the same package.

Can a purchase agreement be signed online?

Yes if it's a private deed purchase agreement. For an authentic deed, consult a notary.

Can a joint guarantor sign remotely?

Yes, provided an AES is used (strong identification).

Retention period for a lease?

Lease duration + 5 years minimum, ideally 10 years.

Conclusion

Electronic signature has become a standard in real estate. Agencies that have adopted it process more files, faster, with less friction for their clients.

Try Certyneo to send, sign and track your documents online simply, quickly and securely.

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Dive Deeper

Our comprehensive guides to master electronic signatures.