The short answer
To sell the whole property, all registered owners must agree and appear at the notary — in person or through a valid power of attorney. Start from the nota simple: it tells you exactly who the owners are and in what shares, which is not always what the family remembers.
Common joint-ownership situations
- Spouses or partners. Both usually appear as owners and both sign. Where a marital property regime or a foreign matrimonial regime is involved, the treatment can differ — that is a question for a lawyer rather than an assumption to make.
- Siblings or friends who bought together. Typically an undivided co-ownership in stated shares, each owner signing for their share of the whole.
- Inherited property with several heirs. The inheritance must be accepted and registered in the heirs' names before a sale can complete. If that has not happened yet, that is the first step — see our guide to selling inherited property in Spain.
- Separated or divorcing owners. The sale still needs both signatures unless a court order or agreement provides otherwise.
- Owners in different countries. The usual solution is a power of attorney, and the usual mistake is leaving it until an offer is on the table.
Power of attorney
A POA lets one person — often a co-owner or the appointed lawyer — sign on another owner's behalf. It can be granted before a Spanish notary, at a Spanish consulate, or before a local notary abroad and then legalised for use in Spain, normally by apostille, with a sworn translation where required. Two practical points: the wording must be specific enough to cover the sale and the acts around it, and the legalisation chain takes time. If an owner cannot travel, treat the POA as the first task of the sale, not the last.
Documentation for a joint sale
- Nota simple confirming all owners and their shares.
- Passport or ID and NIE for every owner.
- Powers of attorney, legalised and translated, for anyone not attending.
- Inheritance deed and registration where the property was inherited.
- Mortgage details and an up-to-date redemption figure, if there is a loan.
- IBI and community fee receipts, energy certificate, utility bills, and bank details for each owner.
One lawyer usually acts for the selling side. Each owner should still be clear that they can take separate advice, particularly where the owners' interests are not aligned.
Mortgage and sale proceeds
An outstanding mortgage is redeemed at completion out of the sale price, and the cancellation is registered afterwards. Only the balance is available for distribution. What remains is then normally split according to the registered shares after seller costs — agency fee, plusvalía municipal, legal fees, and the 3% retention withheld from non-resident sellers.
Where the owners want a different split — one contributed more to the purchase, or paid for a renovation — record that in writing before completion and give the lawyer clear payment instructions, including each owner's own bank account. Retrospective arguments about proceeds are the most common source of bad feeling in an otherwise clean joint sale.
Tax is per owner
Each co-owner is taxed on their own share of the gain according to their own tax position and residence status. For non-residents the gain on a Spanish property sale is taxed at 19%, the buyer's 3% retention is a payment on account applied per seller, and each seller reconciles their own position on form 210. Two owners with the same share can end up in different positions — for example a resident and a non-resident selling the same house.
Our non-resident seller guide covers the retention and filing side in detail.
If one owner does not want to sell
The whole property cannot be sold without them. Realistically the options are to keep negotiating, for one side to buy out the other's share, to sell an undivided share to a third party (rarely attractive), or to ask a court to end the co-ownership. This is a legal matter that depends on the facts and the relationship, and we deliberately do not offer a strategy for it here — take advice from a Spanish property lawyer before positions harden.
When legal advice is needed
Early, and certainly before listing, where: the ownership is inherited and not yet registered; owners are separating or in dispute; a marital or foreign matrimonial property regime is in play; an owner cannot travel or cannot sign; or an owner lacks capacity. Nothing here is legal or tax advice.
Where a valuation fits
If your property has ownership complications, the right selling strategy depends on the specific property and situation. A clear valuation gives every owner the same starting number to make decisions from — and it is usually the fastest way to move a stalled family conversation forward.
