Short answer: in Siero, a typical 80 m² flat has an average appraisal value of about €125,100 (2T 2026, 1,564 €/m²) and rents for about €482 a month (2024 median, 6.02 €/m²). The gross yield is 5.8% with 2024 price and rent, and 4.6% with the 2T 2026 price. Buying it with an 80% mortgage would take about €36,615 in savings.
That is 0.6 points above the median of the 306 municipalities with data (5.2%), and Siero ranks 4th of 6 in the province of Asturias by gross yield.
Rent range (2024): median €425 a month (6.02 €/m²); half of the rented homes pay between €370 and €497 a month (4.79–7.57 €/m², 25th to 75th percentile). Homes analysed: 2,309 rented apartments declared for tax purposes; median size 77 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 Principado de Asturias (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 | €93,900 | €361 | 4.6% | €9,036 | €27,816 |
| 80 m² | €125,100 | €482 | 4.6% | €11,595 | €36,615 |
| 100 m² | €156,400 | €602 | 4.6% | €14,155 | €45,435 |
| 120 m² | €187,700 | €722 | 4.6% | €16,688 | €54,228 |
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 5.8%). “Savings needed” = 20% down payment + buying costs.
Simulate the buying costs Work out the net yield of this flat
Siero compared with its province, region and Spain
| Area | Gross yield 2024 | Price €/m² (2T 2026) | Rent €/m² (2024) |
|---|---|---|---|
| Siero | 5.8% | 1,564 | 6.02 |
| Median of Asturias (6 municipalities) | 5.9% | 1,559 | 6.00 |
| Median of Asturias (6 municipalities) | 5.9% | 1,559 | 6.00 |
| 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 | €370 | €425 | €497 |
| Rent per m² per month | €4.79 | €6.02 | €7.57 |
| 60 m² flat (estimate) | €287 | €361 | €454 |
| 80 m² flat (estimate) | €383 | €482 | €606 |
| 100 m² flat (estimate) | €479 | €602 | €757 |
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: 2,309. 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 |
|---|---|---|
| Siero | 6.02 | €425 |
| Median of Asturias (38 municipalities) | 5.00 | €380 |
| Median of Asturias (38 municipalities) | 5.00 | €380 |
| 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 Asturias: Gijón (7.21 €/m², with yield) · Oviedo (7.32 €/m², with yield) · Avilés (5.98 €/m², with yield) · Langreo (4.90 €/m², with yield) · Mieres (5.00 €/m², with yield) · Castrillón (6.16 €/m²) · Villaviciosa (5.61 €/m²) · Corvera de Asturias (4.98 €/m²) · Llanes (6.02 €/m²) · Llanera (5.56 €/m²) · Carreño (5.54 €/m²) · Grado (4.22 €/m²) · Lena (4.05 €/m²) · San Martín del Rey Aurelio (4.15 €/m²) · Cangas del Narcea (4.69 €/m²) · Gozón (6.31 €/m²) · Cangas de Onís (5.65 €/m²) · Navia (5.07 €/m²) · Noreña (5.19 €/m²) · Pravia (4.27 €/m²) · Laviana (4.16 €/m²) · Valdés (4.66 €/m²) · Aller (4.20 €/m²) · Parres (5.00 €/m²) · Ribadesella (5.80 €/m²) · Tineo (3.58 €/m²) · Soto del Barco (5.93 €/m²) · Vegadeo (3.78 €/m²) · Piloña (4.28 €/m²) · Nava (4.74 €/m²) · El Franco (4.11 €/m²) · Tapia de Casariego (5.01 €/m²) · Salas (4.15 €/m²) · Muros de Nalón (6.56 €/m²) · Colunga (6.01 €/m²) · Cudillero (4.49 €/m²) · Coaña (5.56 €/m²)