Short answer: in Castro-Urdiales, a typical 80 m² flat has an average appraisal value of about €225,100 (2T 2026, 2,814 €/m²) and rents for about €656 a month (2024 median, 8.20 €/m²). The gross yield is 4.4% with 2024 price and rent, and 3.5% with the 2T 2026 price. Buying it with an 80% mortgage would take about €66,985 in savings.
That is 0.8 points below the median of the 306 municipalities with data (5.2%), and Castro-Urdiales ranks 4th of 4 in the province of Cantabria by gross yield.
Rent range (2024): median €608 a month (8.20 €/m²); half of the rented homes pay between €519 and €706 a month (6.63–9.81 €/m², 25th to 75th percentile). Homes analysed: 1,297 rented apartments declared for tax purposes; median size 76 m².
Price, rent and buying costs by flat size
The same price and rent per m² applied to four sizes. Costs are those of a resale home bought as an investment in Cantabria (general transfer tax rate, no main-home reductions) with an 80% mortgage.
| Size | Price (2T 2026) | Rent/month (2024) | Gross yield* | Buying costs | Savings needed |
|---|---|---|---|---|---|
| 60 m² | €168,800 | €492 | 3.5% | €16,847 | €50,607 |
| 80 m² | €225,100 | €656 | 3.5% | €21,965 | €66,985 |
| 100 m² | €281,400 | €820 | 3.5% | €27,084 | €83,364 |
| 120 m² | €337,600 | €984 | 3.5% | €32,194 | €99,714 |
Sources. Price: average appraisal value of free-market housing, municipalities over 25,000 inhabitants (table 4), Ministry of Housing and Urban Agenda (2T 2026; published on 17 September 2026), × size (rounded to €100). Rent: SERPAVI (Spanish State Rental Price Reference System), Ministry of Housing and Urban Agenda (MIVAU), using personal income tax (IRPF) returns and the Cadastre: database 2011-2024 (file «2026-03_09_bd_SERPAVI_2011-2024 - DEFINITIVO WEB_v2»), “Municipios” sheet, apartments in multi-family buildings (vivienda colectiva), municipality level, year 2024, published on 16 April 2026, × size. * Yield with the 2T 2026 price and 2024 rent (mixes years; with both 2024 figures it is 4.4%). “Savings needed” = 20% down payment + buying costs.
Simulate the buying costs Work out the net yield of this flat
Castro-Urdiales compared with its province, region and Spain
| Area | Gross yield 2024 | Price €/m² (2T 2026) | Rent €/m² (2024) |
|---|---|---|---|
| Castro-Urdiales | 4.4% | 2,814 | 8.20 |
| Median of Cantabria (4 municipalities) | 4.9% | 2,395 | 7.49 |
| Median of Cantabria (4 municipalities) | 4.9% | 2,395 | 7.49 |
| Median of Spain (306 municipalities) | 5.2% | 2,053 | 6.82 |
Source: medians calculated by Ladrillómetro over the municipalities with more than 25,000 inhabitants that have official price and rent.
Median rent and rent range
| 2024 | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Rent per month | €519 | €608 | €706 |
| Rent per m² per month | €6.63 | €8.20 | €9.81 |
| 60 m² flat (estimate) | €398 | €492 | €589 |
| 80 m² flat (estimate) | €530 | €656 | €785 |
| 100 m² flat (estimate) | €663 | €820 | €981 |
Source: SERPAVI (Spanish State Rental Price Reference System), Ministry of Housing and Urban Agenda (MIVAU), using personal income tax (IRPF) returns and the Cadastre: database 2011-2024 (file «2026-03_09_bd_SERPAVI_2011-2024 - DEFINITIVO WEB_v2»), “Municipios” sheet, apartments in multi-family buildings (vivienda colectiva), municipality level, year 2024, published on 16 April 2026. Homes analysed: 1,297. The rows by size are a Ladrillómetro calculation (€/m² × size), not a published figure; monthly-rent and per-m² percentiles are computed separately, so they need not refer to the same flats.
| Area | Rent €/m² (2024) | Rent per month |
|---|---|---|
| Castro-Urdiales | 8.20 | €608 |
| Median of Cantabria (39 municipalities) | 5.97 | €450 |
| Median of Cantabria (39 municipalities) | 5.97 | €450 |
| Median of Spain (1,658 municipalities) | 5.81 | €450 |
Medians calculated by Ladrillómetro over the municipalities with at least 50 rented apartments in SERPAVI 2024 (not the official figure for the whole province or region).
Other municipalities in Cantabria: Santander (8.28 €/m², with yield) · Torrelavega (6.27 €/m², with yield) · Camargo (6.78 €/m², with yield) · El Astillero (6.79 €/m²) · Piélagos (6.40 €/m²) · Santa Cruz de Bezana (7.35 €/m²) · Santoña (5.80 €/m²) · Reinosa (5.19 €/m²) · Colindres (5.68 €/m²) · Medio Cudeyo (6.18 €/m²) · Santa María de Cayón (5.70 €/m²) · Entrambasaguas (5.91 €/m²) · Suances (6.90 €/m²) · Cabezón de la Sal (5.39 €/m²) · Laredo (6.67 €/m²) · Los Corrales de Buelna (5.39 €/m²) · Miengo (7.73 €/m²) · Cartes (6.61 €/m²) · Bárcena de Cicero (5.59 €/m²) · Reocín (5.78 €/m²) · San Vicente de la Barquera (5.55 €/m²) · Castañeda (6.36 €/m²) · Ribamontán al Mar (7.74 €/m²) · Polanco (7.21 €/m²) · Ampuero (4.53 €/m²) · Ramales de la Victoria (5.00 €/m²) · Limpias (5.71 €/m²) · Val de San Vicente (5.49 €/m²) · Marina de Cudeyo (6.72 €/m²) · Noja (6.96 €/m²) · Comillas (6.85 €/m²) · Potes (4.95 €/m²) · Liérganes (6.17 €/m²) · Meruelo (5.33 €/m²) · Cillorigo de Liébana (5.97 €/m²) · Voto (5.35 €/m²) · Corvera de Toranzo (4.38 €/m²) · Hazas de Cesto (4.92 €/m²)