Average building footprint
138.2 m²
13.7 m² more than the Haapajärvi average
Postcode area · Haapajärvi
Drainage renovation in postcode area 85800 Haapajärvi
Local buildings, soil conditions and rainfall affect how perimeter drainage, stormwater and ground grading should be designed in 85800 Haapajärvi. Enter your address to see a property-specific plan, a binding price and the option to order the renovation online.
Enter address and see priceBuilding stock
6,756
Buildings
Area
302.4 km²
Streets
239
Residential buildings
27.4 %
Annual rainfall
623 mm
1.9 mm more than the Haapajärvi average
Average temperature
4.0 °C
0.1 °C higher than the Haapajärvi average
Building types
What types of residential buildings are found in 85800 Haapajärvi?
Low-rise residential buildings are divided into detached, semi-detached and terraced houses by dwelling count. Apartment buildings follow the open Ryhti building classification.
Detached houses
1,531
86.6 % of these residential buildings
2.2 percentage points below the share in Haapajärvi
Semi-detached houses
51
2.9 % of these residential buildings
The same share as Haapajärvi
Terraced houses
108
6.1 % of these residential buildings
2 percentage points above the share in Haapajärvi
Apartment buildings
47
2.7 % of these residential buildings
0.7 percentage points above the share in Haapajärvi
The classification covers 63.9% of buildings in the area. A more precise type could not be assigned to 31 low-rise residential buildings because dwelling-count data was missing. The classification describes building type, not ownership or housing-company status.
Local rainfall
What does 623 mm mean for a house?
Water does not disappear from a property on its own. Roof water needs a stormwater system, surface water needs correctly graded ground and water in the soil needs perimeter drainage to carry it away from the foundations.
The area managed by the drainage and stormwater systems receives an average of
213,000 litres
per year. The estimate is based on an average detached house in 85800 Haapajärvi, with a building footprint of 157 m², plus the three-metre zone around the building.
Where does the water go at your home?
Ground grading directs rain and meltwater away from the building. The stormwater system carries roof water away in a controlled manner, while perimeter drains remove water accumulating beside and below the foundations. All three need a safe, working discharge route.
One less worry for your home
When water flows the right way, home can feel like home
Working perimeter drainage, a properly designed stormwater system and correct ground grading carry water away from the building. Good moisture management is almost invisible in daily life. That is exactly how it should be.
Salaojapiste also makes buying the renovation clear. You see the solution for your home and the price in advance. Every Salaojapiste renovation has a clear beginning and end, and you can continue online all the way to the contract.
See the solution for your homeFinland's first online store for drainage renovations
From price directly to order
This is more than a price calculator. We have already reviewed the building and checked the soil, where water loads the property, where it can naturally discharge and how the buildings are positioned on the plot. See what we found.
- 01
Choose your building
Enter the address and select the building on the map that the renovation concerns.
- 02
See the plan and price
You receive a site-specific renovation plan and a clear total price.
- 03
Order the renovation online
When you are ready, approve the contract and buy the renovation directly without intermediaries.
Price, plan and order
See the price and order a drainage renovation 85800 Haapajärvi
Enter the address and choose the building. With a few additional details, you receive the total price and can continue all the way to the contract if you wish.
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Enter your address
Select your address to see how easily you can get a price for your renovation from us. Welcome to renovation buying done one step better!
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Soil data from GTK
What soil types are found in postcode area 85800 Haapajärvi?
6,683buildings
Fine-grained till21.8 %
Silt19.8 %
Very fine sand19.7 %
Mixed-grained soil14.4 %
Fine-grained soil5.6 %
Other soil types18.6 %
The most common surface soil type is Fine-grained till. This soil underlies 21.8 % of the buildings in 85800 Haapajärvi. the Haapajärvi average the corresponding share is 31.1 %.
Area ranking in the municipality
How does 85800 Haapajärvi compare within Haapajärvi?
85800 Haapajärvi is compared with the municipality's 5 postcode areas.
01
Number of buildingsRanked 1
02
Average building footprintRanked 1
03
Annual rainfallRanked 2
04
Average temperatureRanked 1
Location on the map
85800 Haapajärvi
The map shows the postcode area's official Paavo boundary. Use the address search to open the building, property and property-specific planning flow.
See the price for your addressDrainage renovation street by street
Choose a street to explore its building stock and local rainfall. From the street page, continue to the plan and price for your exact address.
Other postcode areas in Haapajärvi
Compare building stock, soil and moisture-management conditions across the municipality's postcode areas.
Frequently asked questions
What does a perimeter drainage renovation cost in 85800 Haapajärvi?
The price depends on the building's size, drainage length, soil, working space, surfaces to be reinstated and the water discharge route. Enter the exact address to receive a property-specific plan and price.
How does soil affect a drainage renovation?
Soil affects excavation, trench construction, water movement and the machinery that can be used. Area data provides local context, but each property is always analysed separately.
Why does rainfall management matter?
Perimeter drainage, roof water, ground grading and a safe discharge route form one moisture-management system. Replacing drainpipes alone does not address every source of water load around the foundations.
Sources: the Finnish Environment Institute's Ryhti building data, Posti (postcodes, postal towns and BAF address ranges), Statistics Finland's Paavo data (postcode area boundaries), the National Land Survey of Finland (buildings), the Geological Survey of Finland GTK (surface soil) and the Finnish Meteorological Institute (rainfall and temperature data for 2016–2025).