Checking the original advert…

For sale Apartment

Altza · Donostia/San Sebastián · Gipuzkoa

Renovated Altza apartment, 3 bedrooms

€425,000

Fully renovated 92 m² apartment in Altza, Donostia-San Sebastián, with 3 bedrooms, 2 bathrooms and communal parking.

Reference Altza · On Inmoblia since 12 August 2026 · Published by Hometers

The property

Specifications

What the advert says about the property: floor area, layout, condition and registry details.

Type: Apartment
Usable area: 92 m²
Bedrooms: 3
Bathrooms: 2
Condition: Good condition

Fittings

Fittings and extras

What the property comes with and how much each item weighs in the “Property data” sub-score.

Heating +3
Parking +5

The advert also mentions:

Thermal insulation
Electric water heater
Electric radiators
Communal parking
Nearby public transport, shops and schools
Renovated kitchen-dining room

Free text we could not normalise into a comparable attribute, so it does not score.

How these values score

The verdict

What the analysis sees

The specific signals the model finds in this property and its municipality, before going into the score in detail.

In favour

In good conditionNo renovation needed to put it on the rental market.

Against

No notable risks in the available data.

Municipal momentum

Where the local market is heading.

Housing transactions

MIVAU · deals per year

+5.4% interanual

Investment guide for Donostia/San Sebastián

Municipal demand

The structural depth of demand in the area.

5%Unemployment rate (approx.)

median 10% unemployed over unemployed + social security contributors (a proxy comparable across municipalities)

+12.9‰Net migration

median 11.9‰ arrivals minus departures from abroad per 1,000 residents · a growing population sustains demand

Registered unemployment

SEPE · yearly average

−1.0% interanual

Registered population

INE · yearly population register

0.0% interanual

Net international migration

INE · immigration − emigration · yearly

+27.2% interanual

Recorded offences

Ministry of the Interior · cumulative

+79.6% interanual

Recorded offences (municipalities over 20,000 residents only, from 2024) are territorial context: they do not label an area “safe” or “unsafe”, nor do they measure tenant risk.

Comparables

Similar properties nearby

Real references of the same municipality and type, to cross-check rent and price. They are not necessarily active offers.

They let for… They sell for…

They let for…

Comparable rentals in Donostia/San Sebastián, including those already let.

They sell for…

Comparable sales in Donostia/San Sebastián, including those already sold.

This is a shortlisting pass over the advert's data, not a due diligence report. Before deciding, check the points we cannot verify from here:

Possession: that it is vacant, with no squatters and no tenants on a live contract.
If it is let, the current rent, the type of contract and its expiry date.
The real state of repair and services (possible hidden renovation work) and a valid energy certificate.
The real service charge and, above all, whether any special levies are approved or pending: they appear in the minutes of the last owners' meetings.
The property's actual IBI: our figure is an estimate from the municipality's cadastral values, not the specific bill.
Charges, mortgages, seizures or easements in the Land Registry extract.