Short answer: in Onda, a typical 80 m² flat has an average appraisal value of about €82,200 (2T 2026, 1,028 €/m²) and rents for about €364 a month (2024 median, 4.55 €/m²). The gross yield is 6.6% with 2024 price and rent, and 5.3% with the 2T 2026 price. Buying it with an 80% mortgage would take about €25,339 in savings.
That is 1.4 points above the median of the 306 municipalities with data (5.2%), and Onda ranks 2nd of 8 in the province of Castellón by gross yield.
Rent range (2024): median €399 a month (4.55 €/m²); half of the rented homes pay between €324 and €453 a month (3.46–6.14 €/m², 25th to 75th percentile). Homes analysed: 992 rented apartments declared for tax purposes; median size 92 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 Comunitat Valenciana (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 | €61,700 | €273 | 5.3% | €7,012 | €19,352 |
| 80 m² | €82,200 | €364 | 5.3% | €8,899 | €25,339 |
| 100 m² | €102,800 | €455 | 5.3% | €10,794 | €31,354 |
| 120 m² | €123,300 | €546 | 5.3% | €12,680 | €37,340 |
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 6.6%). “Savings needed” = 20% down payment + buying costs.
Simulate the buying costs Work out the net yield of this flat
Onda compared with its province, region and Spain
| Area | Gross yield 2024 | Price €/m² (2T 2026) | Rent €/m² (2024) |
|---|---|---|---|
| Onda | 6.6% | 1,028 | 4.55 |
| Median of Castellón (8 municipalities) | 6.3% | 1,197 | 4.76 |
| Median of Valencian Community (45 municipalities) | 5.6% | 1,645 | 5.45 |
| 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 | €324 | €399 | €453 |
| Rent per m² per month | €3.46 | €4.55 | €6.14 |
| 60 m² flat (estimate) | €208 | €273 | €368 |
| 80 m² flat (estimate) | €277 | €364 | €491 |
| 100 m² flat (estimate) | €346 | €455 | €614 |
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: 992. 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 |
|---|---|---|
| Onda | 4.55 | €399 |
| Median of Castellón (33 municipalities) | 4.55 | €399 |
| Median of Valencian Community (207 municipalities) | 4.68 | €421 |
| 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 Castellón: Castellón de la Plana/Castelló de la Plana (5.43 €/m², with yield) · Benicarló (5.21 €/m², with yield) · Vinaròs (5.24 €/m², with yield) · Vila-real (4.87 €/m², with yield) · Borriana/Burriana (4.48 €/m², with yield) · Almazora/Almassora (4.65 €/m², with yield) · Oropesa del Mar/Orpesa (6.93 €/m²) · Benicasim/Benicàssim (7.41 €/m²) · La Vall d'Uixó (4.30 €/m², with yield) · Moncofa (6.67 €/m²) · Nules (4.09 €/m²) · Segorbe (3.78 €/m²) · Peníscola/Peñíscola (5.19 €/m²) · Alcalà de Xivert (4.82 €/m²) · L'Alcora (3.49 €/m²) · Almenara (6.45 €/m²) · Torreblanca (4.03 €/m²) · Borriol (4.72 €/m²) · Chilches/Xilxes (6.15 €/m²) · Cabanes (4.36 €/m²) · Sant Joan de Moró (3.71 €/m²) · Betxí (3.71 €/m²) · Vall d'Alba (3.41 €/m²) · Sant Jordi/San Jorge (5.72 €/m²) · Morella (4.34 €/m²) · Altura (3.75 €/m²) · Jérica (3.85 €/m²) · Vilafamés (4.04 €/m²) · Alquerías del Niño Perdido (4.90 €/m²) · Càlig (4.15 €/m²) · Navajas (4.86 €/m²) · Soneja (3.86 €/m²)