2.4% below the model's estimate

Kaljaasi Fortunan katu 1 C

00540 · Kalasatama - Sompasaari · Helsinki

Asking price
€349,000
€7,196/m²
Model estimate
€357,679
€7,375/m²
Size
48.5 m²
2 rooms
Year
2021
Floor 3/12
Monthly fee
€233/mo
total housing co-op fee
Gross yield
3.7%
vuokra-arvio · rent ÷ asking

Data updated 28 Sep 2026.

Price comparison

How the asking price compares with the price model's estimate and the price level of 00540.

Asking 2.4% below the estimate
Asking price
€349,000
€7,196/m²
Model estimate
€357,679
€7,375/m²
Gap to the model's estimate
−€8,679
asking price minus estimate

Asking price and the model's estimate

The model's average error on new listings is ±10.5%. This listing's gap to the estimate is smaller than that, so it is ordinary model error. The estimate is an asking price, not a sale price: realised sales in 00540 closed on average 7.5% below the asking price (2 sales to the end of 2025).

The median asking price of listings for sale in 00540 is €7,600/m²; this flat asks €7,196/m².

Recent quarterly €/m² trend · 00540

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Postcode median €/m² This listing's asking €/m²

Market context

How this listing compares with realised sales in 00540 Kalasatama - Sompasaari (to the end of 2025) and with other listings for sale.

Days on market
41 days
Counted from when we first observed the listing, capped at our tracking window. Median for 00540: 121 days (n=79).
Sale price vs. asking in this postcode
−7.5%
Mean of 2 realised sales in 00540 to the end of 2025, the same figure the sales archive shows. At the same gap this listing would sell for about €322,906.

What the model considered

27 inputs · XGBoost · v2.5

The estimate comes from a tree model trained on the asking prices of Helsinki listings. It is not a postcode average plus adjustments; the model uses all inputs together. Below are the values the model received for this flat, and each input group's weight in the model.

Model estimate
€357,679
€7,375/m²
Postcode reference
Median asking price in 00540 Kalasatama - Sompasaari: €7,600/m² · this unit asks €7,196/m²
The median asking price of the listings still online in this postcode, after each postcode’s outliers are trimmed back to its interquartile fence. It is a reference, not a model input: the model reads its own training encoding of the postcode, which is clamped and can differ.
Input group
This flat
Weight in the model
Size
48.5 m² · 2 rooms
44.0%
Location
00540 Kalasatama - Sompasaari
29.9%
Amenities
Elevator: Yes · Sauna: Yes · Balcony: Yes
7.8%
Condition
Good
6.2%
Pipe renovation
Not reported
4.6%
Land
Own plot
2.6%
Fees
€233/mo
1.9%
Year built
2021
1.7%
Floor
3 / 12
1.3%

Weight is the input group's share of the model's gain in training. It shows what the model generally relies on, not how much each value moved this flat's estimate.

Pipe renovation

A pipe renovation (linjasaneeraus) is the largest building-systems project a housing company undertakes, and its status often shows in the asking price.

No pipe renovation reported

The listing doesn't mention a recent or planned renovation. Check the housing-company report (isännöitsijäntodistus) for confirmation.

Building & title

Quick reference for things that move the price beyond size and location.

Apartment

Floor
3 / 12
Condition
Good
Energy class
B
Balcony
Yes
Sauna
Yes

Building

Year built
2021
Total floors
12
Elevator
Yes

Title

Land
Own plot
Pre-emption
No clause

Deal economics

What you actually pay, what a realistic close looks like, and what a buyer can expect to earn from rent.

Cash at signing€
Selling price €349,000
Transfer tax (1.5%) €5,235
Admin / drafting fee (est.) €380
Cash needed €354,615
Monthly running costs€/mo
Total housing-company fee €233
Implied annual €2,794
Likely sale price. In 00540, sales closed on average 7.5% below the asking price (2 sales to the end of 2025). At the same gap this listing would sell for about €322,906 (cash including transfer tax and fees: €328,129).
Estimated monthly rent
€1,072
€855–€1,429 · vuokra-arvio.fi
Gross yield
3.7%
estimated rent ÷ asking
Implied annual rent
€12,864
estimate × 12
Refine the rent estimate on vuokra-arvio.fi → Property-specific rent model, accounts for furnishing, amenities, and floor.

Mortgage estimate

Quick estimate of monthly principal + interest. Move the sliders for your situation.

20 % · —
—
25 years
Loan amount
—
debt-free price minus down payment
Monthly principal + interest
—
— a month with the housing-company fee
Total interest paid
—
over the full term

Illustrative only. Real offers depend on your credit, ECB / Euribor at draw-down, and the bank's margin.

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