Buying Property in Dénia: the checks that are specific to this town

I am Juan Bertomeu, lawyer, ICALI number 4643, practising on this coast since 1991. We have an office here in Dénia as well as in Moraira, and my son Daniel, a lawyer and tax adviser, handles the tax side. You are welcome to come and see us in person, which on a purchase like this is usually the fastest hour you will spend.

The steps that are the same anywhere in Spain, NIE, reservation, deposit contract, notary, registration and the tax on top, are all in the full Costa Blanca buying guide on our main site, and in the video of one hour and twenty three minutes that goes with it. The coastal chapter of that video uses Les Rotes as its worked example, which tells you how central this issue is here. What follows is the Dénia part.

The north beaches, and what a boundary decision can do to an ordinary owner

If you are looking at Les Marines, Les Deveses or anywhere along the northern beach strip, this is the first thing to understand.

The Ley de Costas says the strip of land nearest the sea belongs to the State. It is public maritime domain and it cannot be privately owned. Behind it sits a protection zone where you own the land but the State has a say, and where works need permission from the coastal authority. Exactly where those lines fall is fixed by a procedure called a deslinde.

In September 2025 the Ministry approved the definitive deslinde for the northern strip of Dénia, from Les Deveses towards Les Marines. The reported effect is hard to read calmly. Several thousand owners were left facing a total or partial loss of rights over their homes or their land, and in some pockets, Les Deveses above all, homes fell inside the expropriation line itself.

For land that ends up inside the public maritime domain, the consequence is severe. It stops being freehold. It converts into a temporary State concession, a right to use for a period rather than ownership, and affected owners get a window of one year to apply for it. There is a route to challenge the decision, first administratively and then in the courts, and as I write in 2026 those fights are still live.

So on the northern strip you check the current position for the specific property. You do not assume, and you certainly do not rely on what the seller believes to be true.

Les Rotes and the front line

Les Rotes is a different stretch of coast with its own delimitation history, and I am not going to tell you it is settled, because that assumption is exactly what costs people money. You check there too.

The check itself is simple and it is not expensive. You cross the property against the official boundary maps held by the coastal service, alongside the Land Registry. It takes a few days. Against the price of a front line villa here it costs almost nothing, and sometimes the answer is that you are not buying full ownership of the whole plot at all. You want to know that before the deposit contract, not after.

The sewer rule changed in 2025, and distance no longer decides

This one is pure Dénia, and it catches owners on the Montgó and on inland plots who have been told for years that they are too far from the mains for it to be their problem.

The old rule dated from 2009. It obliged properties less than 100 metres from the network, counted along public roads, to connect at their own cost, and said nothing about plots further away. The council rewrote it: definitively approved at the plenary of 24 April 2025, published in the provincial gazette of Alicante on 9 May 2025, in force fifteen working days later.

Under the new text the duty is stated in general terms, and beyond 100 metres the council can start the works itself as a public work. Two other articles are still drafted around the old 100 metre line, so how they fit together is not fully resolved on the face of the ordinance. What is clear is that distance alone no longer answers the question, and that the answer depends on how the specific plot is classified.

And you cannot measure this off a map. The distance runs through public roads rather than in a straight line, and from any point of the plot boundary rather than from the house. A villa sixty metres from a sewer across a ravine can be well over 100 metres once you follow the road. A long plot can fall inside the limit because one corner of the boundary, nowhere near the house, meets a road the network reaches.

If you are buying a property on a septic tank here, that is a question to answer before you sign, because the cost of connection can land on the owner.

Dénia by area

Les Marines and the northern beaches: apartments and villas along the sand, and the deslinde question above before anything else.

Les Rotes: the rocky coast south of the port, the most expensive strip in town, front line villas where the coastal check comes first rather than last.

The centre and the old town: flats and townhouses under the castle. Older buildings, communities of owners, and the usual questions about what has been reformed and with what licence.

The Montgó slopes: villas with plots and views, and the checks that come with a plot. Access, boundaries, what is legally built, and now the sewer question.

La Xara and Jesús Pobre: the inland pedanías, campo, more space and lower prices, and the place where rural land rules and old unlicensed building need real attention rather than reassurance.

What you pay on top of the price

Budget for the purchase tax, the notary, the Land Registry and your own lawyer. The rates changed on 1 June 2026 and the outdated figures are still everywhere online, so the current table with worked examples lives in the full Costa Blanca buying guide, where we keep it up to date in one place.

Two structural points worth knowing before you offer. The tax is calculated on the reference value published by the Catastro whenever that is higher than the price you declare. And if your seller is a non-resident, you as buyer must retain 3 per cent of the price and pay it to the tax office within a month of the deed. Miss that and the tax office can pursue the property, which by then belongs to you.

Working with us in Dénia

We are independent lawyers and tax advisors, we are not the agent, and we do not take commission on your purchase. Our offices are in Dénia and Moraira, and we work from Oliva down to Alicante, with most of our clients between Oliva and Benidorm.

If you are abroad, a power of attorney lets us handle the entire purchase, completion included, without you flying over. If you are here, come to the office and bring the listing.

Consultations are paid, and worth it because the answer is about your plot rather than about Spain in general. Once you own, the yearly non-resident tax return can run online through our own low cost service at Easy210Spain, same firm, lower touch.

This is general guidance, not advice on your property. The coastal position on parts of this coast is being actively reviewed and litigated, so let us confirm the exact situation for your case before you sign.