Lemu 21230

Masku · Realised detached house sale prices and the area's population profile from open data of the National Land Survey of Finland and Statistics Finland · updated 28 October 2026.

Detached house sale prices 2017–2026

Postcode area 21230 had 39 detached house sales in 2024–2026, at an average sale price of €218,754. Prices have changed by +4.6% a year on average. The figure is the total property price, plot and building together, and is not adjusted for house size. How the detached house figures are calculated (in Finnish) →

Year	Average price	Sales
2026*	194,091	11
2025	216,807	16
2024	243,959	12
2023	250,175	8
2022	216,063	16
2021	216,386	22
2020	191,059	17
2019	178,907	16
2018	180,591	11
2017	160,167	18

The average price is in euros per property and the number of sales is a count. The register has no floor area for the building, so a price per m² cannot be calculated and the figures are not standardised for house size: large and small houses share the same average. Sales of detached houses on leased plots are not property sales, so they are missing from the register entirely. Year 2026* is still in progress and will be completed later, so it is left out of the annual change.

Sales volume trend in the area

How many apartment sales took place in postcode area 21230 per quarter, stacked by apartment type: 11 sales in total over Q2/23–Q1/26*. The number of sales reflects turnover in the area: in an active area price estimates are more reliable and time on market shorter, while fading volumes signal cautious buyers.

The count is published even for quarters with no published average price, so the chart also shows apartment types with few sales. The last quarter (Q1/26*) is preliminary, hence lighter.

Area profile

Population declining, middle-aged population.

Population residents	1,748	▼ −7.3% / 10 yrs
Mean age years	43	≈ −1 yr vs. all of Finland
Median income €/yr, residents	30k	▲ +13% vs. all of Finland
University-educated share of residents	25%	▼ −4 pp vs. all of Finland
Employment rate of the labour force	94%	▲ +6 pp vs. all of Finland
Rental homes of households	5%	▼ −32 pp vs. all of Finland
Average home size m²	113	▲ +44% vs. all of Finland

▲/▼ compare the value with the national level (Paavo 2024): median income €26k, university-educated 29%, employment rate 88%, mean age 44 yrs, rental homes 38%, average home size 79 m².

Population trend 2010–2024

Source: Statistics Finland, Paavo (open postcode-level data). The latest statistical year is 2024: postcode-level population data is published with a delay of 1–2 years.

Other areas: Masku

Masku: prices for all areas and the citywide price trend →

Frequently asked about 21230

How much does a detached house cost in 21230?

In Lemu (Masku), detached house properties have cost an average of €218,754 in completed sales over the last 3 years (39 sales, National Land Survey of Finland's register of property prices). The figure is the total property price and is not adjusted for house size, so large and small houses share the same average.

Are detached house prices rising or falling in 21230?

The area's average detached house price has risen by about 4.6% a year (sales-weighted trend from 2017–2025). The current year is incomplete and not included in the trend.

What kind of area is 21230 Lemu?

The area has 1,748 residents (2024), the mean age is 43 and the median income of residents is €29,796 a year. The share of university-educated residents is 25%. The population has decreased by 7% in ten years.

Sources and method

Apartment prices: Statistics Finland, prices of housing company apartments (StatFin 13mt). Updated 17 August 2026. The average price per m² is a sales-weighted average of completed sales over the last four quarters, shown only if there are at least 6 sales.
Detached house prices: National Land Survey of Finland, register of property prices (detached house properties, built plots). Updated 28 October 2026. The average price is a sales-weighted average of completed sales over the last 3 years, shown only if there are at least 8 sales. The figure is the total property price: the register has no floor area for the building, so no price per m² is calculated.
Population, income and education: Statistics Finland, Paavo: open data by postcode area (12f7). Statistical year 2024.
Limitations: the figures are area averages. They do not tell you the value of an individual apartment and are not investment advice. In areas with few sales a single sale moves the average.