Taking over the developer's mortgage: how it works in a new build

The day you collect the keys to your new build, the lobby still smells of fresh plaster and the kitchen is waiting for its first dinner. Just before that, at the notary's office, someone drops a folder on the table: the developer offers you the chance to keep the mortgage they themselves signed to build the place. It sounds odd. It is legal, old, and very common on the Costa Blanca.

What it means to take over the developer's mortgage

The so called préstamo promotor (developer loan) is the financing the promoter requests from a bank to put the building up. When the matrix property is split into individual deeds, one per home, each unit is encumbered with its share of that mortgage. At handover, you can step into that share as the new debtor. That is the subrogation: the borrower changes, the conditions do not.

It is the technical substitute for arranging a new mortgage. You inherit the rate, the term, the outstanding capital, and the fees exactly as the developer agreed them with the financing bank.

Two laws frame the operation

Law 2/1994, of 30 March, on the subrogation and modification of mortgage loans, is still the backbone. It allows the subrogation, regulates early repayment fees, and lowers the tax cost of contractual changes. Then came Law 5/2019, of 15 March, on real estate credit contracts (LCCI). Its article 14.1.e reallocates expenses: on mortgages signed after June 2019, the bank pays them, not the client.

Important: subrogation can never be mandatory. The Bank of Spain doctrine is clear. On a first transmission of a home, any clause forcing the buyer to inherit the developer's mortgage is considered abusive. You have the right to read the deed, compare, and decline.

What it costs and what you save

The main saving is on setup costs. When you subrogate, most expenses (notary, registry, AJD stamp duty, gestoría) are paid by the bank under the LCCI distribution rules, because the mortgage already exists and no new one is being created. A new mortgage of 200,000 euros can generate 3,000 to 5,000 euros of upfront costs that simply disappear here.

You will pay some things:

• The valuation, if the bank requires it. On an average property in the province, 250 to 450 euros.
• The subrogation fee, if it appears in the original deed. The LCCI caps it at 0.15 percent of outstanding capital during the first three years on variable rate mortgages.
• Authorised copies of the deed, if you ask for them.
• If you negotiate a change of rate, term, or instalment (a novación), some costs come back to your side, pro rata.

Add it all up and the operation costs a fraction of starting from zero.

When subrogating makes sense

The honest test is to ask three questions, in this order.

Are the developer's loan conditions competitive today. Look at the spread over Euribor, the remaining term, the amortisation system. If the developer locked in Euribor plus 0.80 two years ago and the market is now offering Euribor plus 0.99, you win by inheriting it.

Are you eligible. The bank will scrutinise your solvency just as for a new mortgage. Job stability, debt to income ratios, credit history. If your profile is tight, negotiating with your usual bank may end up better despite the higher costs.

Are you in a hurry. Subrogation shortens timelines. The property documentation already lives at the issuing bank. Signing happens in the same deed as the purchase, on the same day.

The process step by step

Here is how it unfolds, from the developer's table.

First, the developer hands you a copy of the deed of the developer loan as soon as you reserve the property. Read it. Or better, give it to a trusted advisor.

Second, you request the subrogation from the bank. The entity provides you with the Ficha Europea de Información Normalizada (FEIN), the Ficha de Advertencias Estandarizadas (FiAE), and a draft contract. The LCCI requires ten calendar days between the delivery of these documents and the signing.

Third, a visit to the notary for the act of material transparency. It is free and mandatory. The notary explains the critical clauses, checks that you understand, and signs a record.

Fourth, signing day. In the same notary's office you sign the purchase with the developer and the subrogation with the bank. You walk out with the keys.

Costa Blanca, plenty of brick and plenty of subrogation

The Costa Blanca has been running at full speed on new builds for three years now. Aedas Homes runs sixteen projects in the province (Jávea, Sant Joan d'Alacant, Dénia, Alicante city), this year delivered the Jarcia development in San Agustín, 48 homes from 399,500 euros, and is preparing a fifth project in the same neighborhood for 2026. Metrovacesa keeps fourteen active developments with 874 homes in the Valencian Community, several in Sant Joan and the capital. Culmia is building around a hundred units in Dénia and Rocafort.

Almost all these developers work with banks such as Sabadell, BBVA, Santander, Caixabank, and Cajamar. Each promotion is built on a developer loan that breaks up unit by unit at the end. If you buy one of those homes, subrogation is the default option the sales agent will show you.

Do not accept it on autopilot. Ask for the deed, compare with two market mortgages, take the numbers to an independent advisor. The developer's bank is not your bank, not yet.

What a journalist says, not an advisor

This is not personalised advice. Every subrogation has fine print: floor clauses in the original loan, tied products (insurance, pension plans, cards), early repayment fees that survive the change of holder. Before signing, a review by a lawyer or independent financial advisor is worth doing. And it is worth reading the deed yourself, word by word. Your new home deserves those twenty minutes.

The moment of the keys is beautiful. The figure you will pay every month for twenty five years also deserves attention.

If you are choosing between two new build developments on the Costa Blanca, we can help you understand what they offer. Explore our properties or contact us.