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MUNICIPAL GUIDE · LIVE LISTINGS · PUBLISHED MARKET DATA

Properties for sale in Siero

Siero is in Asturias. This page combines current public NLS inventory with available aggregate market evidence, always naming the source and geographic scope.

Current public listings0NLS inventory available now
Published municipal activity228MITMA · 2026Q2 · recorded transmissions
Published sold benchmark€1,281/m²Siero · 2026-12mo · Consejo General del Notariado · Penotariado
Province registry activity3,826Asturias · 2026Q2 · Registradores

Listings show current asking prices. Benchmarks are published aggregates, not property valuations. When no municipality figure exists, the available wider scope is shown and labelled.

Asturias market intelligence

Siero market analysis

Official sold-price, transaction, population and housing-stock evidence is kept separate from current NLS asking inventory, with the period and geographic scope stated for every measure. Where a municipality series is unavailable, the wider province scope is shown explicitly.

Data scope · Siero municipality

Sourced local guide

Siero: local guide and property context

A sourced introduction to Siero, its official settlement geography and the evidence used on this property-area page.

Local overview

Siero is a municipality of the autonomous community of Asturias, in northern Spain. It has a total of 29 parishes, with the largest being Lugones; its capital parish is La Pola Siero. It is located centrally within Asturias, and the northernmost point of Siero is about 10 km from Asturias' largest city, Gijón, and the shores of the Cantabrian Sea.

Official geography

The official INE register places Siero in Asturias province under municipality code 33066. The linked structured record provides a recorded municipal area of 211.24 square kilometres and a reference coordinate of 43.3915, -5.6609. The coordinate is a municipal reference point, not a property, parcel boundary or radius from which local claims are inferred.

Settlements and local form

The current IGN Nomenclátor extract records 225 official population nuclei for Siero. The imported source records are dated through 2025-10-20. The entry explicitly marked as the municipal capital is La Pola Siero, at a recorded elevation of approximately 213 metres. Other population-bearing nuclei in the extract include Lugones/Llugones (13,091 residents in the cited settlement record), Urbanización La Fresneda (4,830 residents in the cited settlement record), El Berrón (3,693 residents in the cited settlement record), Viella (629 residents in the cited settlement record), and Colloto/Cualloto (609 residents in the cited settlement record). Nomenclátor entries describe settlement geography; they are not listing totals, neighbourhood boundaries or evidence of homes currently available for sale.

How this guide keeps the evidence local

The data sections below keep Siero’s municipality evidence separate from wider province and regional comparisons. This prevents similarly named places in other provinces from being blended together. Where a municipality-level series is unavailable, the page labels the province fallback explicitly; current NLS asking inventory remains separate from completed-sale, demographic and cadastral evidence.

What the official data shows for Siero

Siero is a municipality in Asturias, Asturias, Principado de. The latest available INE municipal record reports 52,035 residents in 2023.

The INE population series shown for Siero municipality runs from 2015 to 2023, moving from 51,379 to 52,035 residents. The published series therefore changes by +1.3% over that span; this describes resident population, not housing demand by itself.

MITMA records 927 housing transactions over the latest four published quarters through 2026Q2. That is +7.8% compared with the preceding four quarters.

Current Catastro coverage for Siero municipality includes 17,470 recorded buildings and 29,679 recorded dwellings, with an average recorded build year of 1959. These are cadastral records, not a count of homes currently for sale.

Within buildings that carry a usable construction year, the largest Catastro age band is Before 1950, representing 35.2% of that recorded subset. The distribution helps describe the physical stock, but it does not establish refurbishment condition, energy performance or legal status for an individual property.

The current Consejo General del Notariado snapshot reports a completed-sale rate of €1,261 per square metre for Siero municipality, based on 841 price-informed sales from 936 total recorded transactions. It is a dated aggregate snapshot rather than an asking-price estimate or an individual property valuation.

INE reports a house-price index of 114.0 for Asturias, Principado de in 2026Q2. The index moved +15.0% year on year. This regional index shows direction of travel, not the value of a particular home.

The latest available INE indicators for Siero municipality report net income per person of €15,873 (2023); an average age of 46.7 years (2023); an average household size of 2.30 people (2023); 3.7% of residents recorded as non-Spanish (2023); 23.5% of residents aged 65 or over (2023). These measures describe the resident and household context. They should not be converted into a forecast of prices, rents or buyer demand.

The administrative extract contains 2,992 registered energy certificates for this scope, with 6.6% rated A to C. Certificate coverage is not the same as the total housing stock, and a certificate count must not be read as a count of homes available to buy.

NLS currently shows 0 active public listings for this search. Those live asking listings are kept separate from official completed-sale, demographic and cadastral records so readers can compare current availability with historical evidence without blending unlike measures.

Official sold-price snapshot€1,261/m²841 price-informed sales · 936 total transactions · Siero municipality · Consejo General del Notariado
Average completed sale€147,893117 m² average recorded surface · 841 price-informed sales · official snapshot
Transactions · latest four quarters927MITMA · Siero municipality · through 2026Q2 · +7.8% versus the prior four quarters
Appraised housing value€1,453/m²MITMA · 2026Q1 · appraised basis, not a completed-sale price
Current NLS inventory0Active public listings now · asking inventory, not completed sales

Consistent official series underpin nationwide coverage: quarterly housing transactions from MITMA and annual population from INE. Any wider fallback is labelled directly on the chart.

Quarterly housing transactions

Siero municipality · MITMA · latest 12 quarters

Siero municipality quarterly housing transactions Quarterly MITMA housing transaction totals for Siero municipality. 237 0 2023Q3: 157 transactions 2023Q3 2023Q4: 193 transactions 2024Q1: 179 transactions 2024Q2: 232 transactions 2024Q3: 182 transactions 2024Q3 2024Q4: 219 transactions 2025Q1: 225 transactions 2025Q2: 234 transactions 2025Q3: 227 transactions 2025Q3 2025Q4: 235 transactions 2026Q1: 237 transactions 2026Q2: 228 transactions 2026Q2

Population

Siero municipality · INE · 2015–2023 · +1.3%

Siero municipality population Annual INE population for Siero municipality. The vertical axis uses the observed range shown. 52,167 50,806 2015: 51,379 residents 2015 2016: 51,129 residents 2017: 51,043 residents 2018: 51,123 residents 2018 2019: 50,938 residents 2020: 51,132 residents 2021: 51,284 residents 2021 2022: 51,672 residents 2023: 52,035 residents 2023

People and households

Latest available demographic evidence from INE for Siero municipality; each measure states its own latest period.

Population52,035INE · 2023
Net income per person€15,873INE household income atlas · 2023
Average age46.7Years · INE · 2023
Average household size2.30People per household · INE · 2023
Non-Spanish resident share3.7%Population by nationality · INE · 2023
Residents aged 65+23.5%INE demographic structure · 2023

Housing stock and operating context

Physical stock comes from Catastro. Energy-certificate and tourism-register counts are official administrative records and should be read as registered coverage, not as estimates of every home.

Cadastral buildings17,470Dirección General del Catastro
Recorded dwellings29,679Catastro building records
Average recorded build year1959Average across buildings with a recorded year
Energy certificates2,9926.6% rated A–C · registered certificates only
Before 1950
35.2%
1950–1969
15.8%
1970–1989
17.6%
1990–2009
24.9%
2010 onward
6.6%

Wider market comparison

Asturias province and Asturias, Principado de measures provide context; they are not substitutes for a municipality or neighbourhood value.

Asturias sold price€1,651/m²Registradores · 2026Q2 · +15.7% year on year
Asturias average sale price€140,444Registradores · province · 2026Q2
Asturias notarial average€134,672Consejo General del Notariado · 2026-03
Asturias, Principado de house-price index114.0INE · 2026Q2 · +15.0% year on year
Resale share of transactions81.7%Latest four quarters · MITMA · Siero municipality
Sources, periods and how to read this analysis

Completed-sale snapshot. Consejo General del Notariado / Penotariado aggregate for the stated scope. Price measures use 841 price-informed sales from 936 total recorded transactions. It is a current snapshot fetched 2026-08-03 21:39:29, not a historical point.

Transaction activity. MITMA quarterly housing transmissions, shown as published counts with no scaling or extrapolation.

Registered-price context. Colegio de Registradores quarterly statistics for the labelled comparison scope. Aggregate values are never relabelled as municipality or neighbourhood values.

Population and income. INE series for Siero municipality through 2023. Aggregate percentages and averages are population-weighted where appropriate.

Physical stock. Dirección General del Catastro building records. Counts describe recorded stock, not homes currently for sale.

Administrative registers. Official energy-certificate and, where available, tourism-register entries are matched to official geography; coverage is not a model of unregistered stock.

Geographic scope. Official municipality pages use their INE code. Legacy area-taxonomy pages inherit only a municipality or province scope that resolves unambiguously; no market value is derived from a listing location.

Current listings. The NLS active public inventory, shown separately as asking inventory and never blended into completed-sale statistics.

Images. Wikimedia Commons files are selected through Wikidata municipality records. Each photograph retains its creator, reuse licence and source link.

This is aggregate market context, not a property valuation, cadastral assessment, legal opinion or forecast. Non-institutional deed samples and commercial portal asking-price benchmarks are excluded from the analysis.

Current properties in Siero

0 current listings · Only active, public listings are shown.

Search across Spain
There are currently no public NLS listings in this municipality. The guide retains its published market evidence and lets you broaden the search across Spain.

Explore municipality guides near Siero

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