“We bought a flat directly from the seller in Madrid and the earnest money contract was ready much sooner than expected. Seeing everything organised with legal backing gave us peace of mind.”
Laura & Sergio
Madrid
Centralise the ownership transfer process with guided steps: requirements, documentation, meter readings and tracking from a single dashboard.
Real case file preview
Utility transfers stop depending on scattered emails: checklist, readings, documents and notes stay visible in a single case file.


In a single dashboard
Checklist + documents + tracking
Firma Vivienda does not perform on-site tasks. It digitises the case file preparation and centralises all information to simplify the process.
Per-utility checklist (electricity, water and gas) so nothing is missed
Centralised documentation: IDs, contract/deed, notes and annexes
Meter readings and usage split referenced to key handover
Real experiences
“We bought a flat directly from the seller in Madrid and the earnest money contract was ready much sooner than expected. Seeing everything organised with legal backing gave us peace of mind.”
Laura & Sergio
Madrid
“We sold our flat without paying commission to third parties and handled almost everything online. What we valued most was not having to coordinate calls and documents across different channels.”
Fernando
Málaga
“We used Firma Vivienda with the launch promotion and the savings versus a traditional estate agency were huge. The platform let us stay in control without feeling left alone.”
Pedro & Patricia
Valencia
Module preview
Each party enters their dashboard, provides the information that corresponds to them and follows the progress of electricity, gas and water with a clear status.
Per-utility checklist so no requirement is missed.
Readings and documentation centralised.
Buyer and seller views inside the same case file.
Status tracking without email chains.
In a single dashboard
To complete the transfer with clarity and order.

Buyer view

Seller view
Each provider has different requirements, sometimes the supply point data (CUPS / contract number) is missing, and tracking is done via emails or calls with no clear status.
Scattered documents (DNI, previous bill, contract, deed…).
Uncertainty about readings and correct date (signing vs. key handover).
Missing CUPS or supply point data.
No clear status tracking: "has it been requested?", "accepted?", "anything missing?"
Firma Vivienda digitises the case file: per-utility checklist, organised documentation and a dashboard to record readings and track the process.
Clear checklist for electricity, gas and water.
Documentation organised by case file.
Readings and notes recorded to avoid misunderstandings.
Progress tracking in a single place.
Requirements may vary by provider, but these are the most common data and documents.
New owner details (DNI/NIE, name, contact).
Supply address.
CUPS
(from previous bill).
Meter reading (if applicable) at the key handover date.
Sale document (contract / deed, as applicable).
Bank account (if applicable).
New owner details (DNI/NIE, name, contact).
Supply address.
CUPS
(from previous bill).
Meter reading (if applicable) at the key handover date.
Sale document (contract / deed, as applicable).
Bank account (if applicable).
New owner details (DNI/NIE, name, contact).
Supply address.
Contract number / reference (depending on provider).
Meter reading at the key handover date.
Sale document (contract / deed, as applicable).
Bank account (if applicable).
Some providers may require a signed authorisation/power of attorney from the new owner if another person or company handles the process remotely. Firma Vivienda can help you prepare it within the case file.
A guided flow to provide data, attach documentation and track the transfer status.
Start your case file and store the key information about the sale in one place.
Upload IDs, sale documents and add data such as CUPS (electricity/gas) or water references.
Note down readings to split usage in an orderly way, usually referenced to the key handover.
Mark what's complete and what's pending. Keep a clear status for the management of each utility.
Especially useful if you want clarity and a single place for all documentation and tracking.
Private property sale between individuals.
You want to avoid oversights (CUPS, readings, documents).
You need clear tracking of the ownership transfer.
You prefer to manage everything remotely and in writing.
If you need on-site tasks (in-person readings, technical visits, etc.).
If you want a third party to "do everything" and the provider requires the owner to be present at the office.
Cases with complex issues or pre-existing disputes with the supply.
Common queries about utility ownership transfers after a property sale.
The common practice is to use the key handover date as the reference, as that is when the buyer takes over the property. That day is the most suitable for providing readings and splitting usage. If your agreement specifies a different date, it is advisable to follow what was agreed.
It depends on the provider. Many allow the new owner to request the transfer by providing documentation, and sometimes an authorisation if a third party manages the process. In any case, it is advisable to have the CUPS/contract number and a reading if applicable.
The CUPS usually appears on previous bills and sometimes also on supply point documentation. If you don't have it, the process may require contacting the provider or recovering the data with additional supply information.
Firma Vivienda is a 100% online service that helps you complete the entire property sale: lawyer-reviewed earnest money contract, electronic signature, appraisers, mortgages, notaries and utilities. The specific handling with the provider may vary depending on the case and available channels.
Whoever has access to the property (usually the buyer or seller depending on the timing). Firma Vivienda does not perform in-person readings; it allows you to record them and keep them associated with the case file.
Checklist, documentation and tracking: everything organised in one place to move forward without doubts.