How this unit prices vs. the model and the surrounding 00600 market.
Asking is 17.0% below predicted
Asking price
€139,000
€2,426/m²
Predicted price
€167,433
€2,922/m²
Implied savings
−€28,433
vs. model estimate
Where this listing sits in the market
00600 · asking vs. predicted €/m²
Asking €2,426/m²
Predicted €2,922/m²
€1,765/m²€2,715/m² (postcode median)€3,936/m²
Recent quarterly €/m² trend · 00600
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Postcode median €/m²This listing's asking €/m²
Market context
How this listing compares to recent activity in 00600 KoskelaJuhana Herttuan tie 12 F — actual sold prices, typical seller flexibility, and how long listings sit before they close.
Days on market
44 days
Median for 00600: 176 days (n=36).
Fresh — seller likely firmer.
Typical negotiation in this postcode
-3.5%
Average sold-vs-asking gap across 1 matched sales in 00600.
Implied close on this listing: €134,190.
Price changes during this listing
2026-03-30
€139,000
→€132,000
-5.0%
(-7,000 €)
2026-04-06
€132,000
→€139,000
+5.3%
(+7,000 €)
What the model considered
24 features · gradient-boosted regression
Predictions come from a non-linear XGBoost ensemble trained on a rolling 365-day window of Helsinki listings — not a postcode median with per-feature adjustments. Below are the values the model received for this unit, with each feature group's typical training-set importance.
Predicted
€167,433
€2,922/m²
Postcode reference
Median in 00600 KoskelaJuhana Herttuan tie 12 F: €2,715/m²
· this unit asks €2,426/m²
Postcode median is one of 24 inputs (~12% of model importance) — not a baseline that adjustments are layered on.
Floor area
57.3 m²
Very high
Room count
2 rooms
Very high
Postcode
00600 · KoskelaJuhana Herttuan tie 12 F (median €2,715/m²)
High
Condition
Good
High
Year built
1972
High
Pipe renovation
Completed 2024
High
Maintenance fee
€319/mo
High
Floor in building
5 / 6
High
Land ownership
Leased plot
Moderate
Elevator
Yes
Moderate
Sauna
Yes
Moderate
Balcony
Yes
Moderate
Importance is the typical share of model gain attributed to each feature group across the training set. The actual contribution to this specific prediction would require running SHAP on the live model.
Pipe renovation
Linjasaneeraus is the largest building-system replacement a Helsinki housing company performs — typical cost €25–55k per unit and often shifts the asking price.
Pipe renovation completed 2024
No imminent assessment expected; the cost is already absorbed into the asking price.
Building & title
Quick reference for things that move the price beyond size and location.
Apartment
Floor
5 / 6
Condition
Good
Energy class
G
Balcony
Yes
Sauna
Yes
Building
Year built
1972
Total floors
6
Elevator
Yes
Title
Land
Leased plot
Pre-emption
Not reported
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
€139,000
Transfer tax (1.5%)
€2,085
Admin / drafting fee (est.)
€380
Cash needed
€141,465
Monthly running costs
€/mo
Total housing-company fee
€319
Implied annual
€3,833
Realistic close estimate.
Sales in 00600 settle
3.5% off ask
on average (1 matched sales).
At that rate, this listing closes near
€134,190
(cash incl. tax + admin: €136,583).
Gross yield
—
rent ÷ asking
Implied annual rent
—
back-computed from yield
Implied monthly rent
—
annual ÷ 12
Mortgage estimate
Quick estimate of monthly principal + interest. Move the sliders for your situation.
20% · €—
4.0%
25 years
Loan amount
€—
debt-free price minus down payment
Monthly principal + interest
€—
plus housing-company fee €— all-in
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.