New developments on the Costa del Sol

A small group of new developments and off-plan projects we are following along the Costa del Sol. Each is shown with a starting price, the range of bedrooms and sizes on offer, and its completion.

City

Sub-area

Type

Bedrooms

Features

Price (EUR)

340 developments

Sort
Sierra Blanca by the Sea - photo 1
DIEZ Selection

NEW GOLDEN MILE, ESTEPONA · COMPLETION 2027 TO 2028

New beachfront apartments, penthouses and villas for sale in Estepona

Sierra Blanca by the Sea is a beachfront development on the New Golden Mile in Estepona, set on a plot of about 33,346 m² at Playa del Ángel, next to the Trocadero Estepona beach club. The homes face the Mediterranean and are arranged to hold the sea views, with vehicle circulation kept underground to keep the grounds quiet.

Price
From €3,500,000
Bedrooms
2 to 5 bedrooms
Built size
174 to 860 m²
Completion
2027 to 2028
View development

Some homes never reach the market

Not every development we represent is listed here. We hold over 300 along the Costa del Sol, most of them off-market.

Let us help you find it

What has to be true before a project appears here

We visit the site, study the plans, and meet the architect or developer before a development is listed. Then we stay beside you through reservation, contract, and completion.

01Walked, not scraped
We visit the site, and the show unit where one exists. If we have not stood on the plot, the project does not carry our name.
02The developer holds up
Track record, licences, and financing, checked before the renders get a say.
03Guaranteed payments
Stage payments must sit behind a bank guarantee, as Spanish law provides. We confirm it before you reserve.
04Priced against the finished
The numbers are checked against completed homes nearby, not against other launches.

Buying off-plan, in order

Four stages, each one protecting the next. You commit gradually, and the guarantees grow with the building.

A single courtyard scheme on a flat plot, Sotogrande
  1. 01

    Reserve

    A reservation fee takes the unit off the market while the legal checks run.

  2. 02

    Private contract

    The full terms: specification, delivery date, payment plan, and the bank guarantee, reviewed before you sign.

  3. 03

    Build and stage payments

    Payments follow construction milestones, each covered by the guarantee. We watch the site as it rises.

  4. 04

    Completion and keys

    A rigorous snagging inspection, then the notary, the keys, and the warranty on the finished home.

Read before you reserve

All guides
A newly built contemporary villa on the Costa del Sol

OFF PLAN · 13 MIN

Buying a new development in Spain: the 2026 off-plan guide

New homes on a Costa del Sol hillside

INVESTORS · 14 MIN

Investing in Costa del Sol property (2026): yields, rental rules and tax

A contemporary home on the Costa del Sol

BUYERS · 14 MIN

Buying property on the Costa del Sol: the complete guide (2026)

Off-plan, answered plainly

The questions buyers ask us most before reserving a new development on the Costa del Sol. For the full picture, the guides above go deeper.

Is buying off-plan on the Costa del Sol safe?

It can be, with the right safeguards: a licensed developer, a bank guarantee on your stage payments, and a clear completion clause. DIEZ checks the developer's track record and the legal structure before you commit, and flags any project where the numbers or the timeline do not hold up.

How are payments structured when buying off-plan?

You pay in stages rather than all at once: a reservation fee, a portion at the private contract, instalments during construction, and the balance at completion in front of the notary. Spanish law requires the developer to secure your stage payments with a bank guarantee, which we verify before you reserve.

Does DIEZ charge the buyer a fee?

No. Our service is free for buyers. We are paid from the standard sale commission already built into the price, the same as any agency, so advice, viewings, and negotiation cost you nothing extra.

What does DIEZ check before recommending a development?

Orientation and light, the realistic finish quality versus the renders, the service-charge forecast, the developer's record, and whether the price holds up against finished resale stock nearby. If the substance does not match the presentation, we tell you.