The City of Lahti provides a wide range of surveying services for the City’s own units as well as private buyers. We also maintain the City’s own soil register. You can find control point information in our map service. At the bottom of this page, you can find contact information for ordering terrain measurements and soil register data.
Building inspection measurements
Building inspection measurements mean all the measurements related to building permits, including construction site marking, elevation marking, yard slope measurement and location review.
Construction site marking
Marking of the construction site on the terrain is carried out after the building permit has been issued. Order the marking well in advance. The delivery time of the marking is about 5 business days. The building is marked on the terrain with dimensions according to the finished wall surface (extreme dimensions). The builder must take into account deviations in the dimensioning of the plinth or similar foundation. The marking includes the 4 outermost corner points.
The best time for the marking measument is usually after the trees and topsoil have been removed. The marking of the building is included in the building permit fee. Additional marking measurements will be charged according to the price list of GIS services.
Location review
The location review should be ordered when the foundations of the building have been built and the height of the plinth or floor can be checked.
The location review states that the location and elevation of the building are in accordance with the confirmed drawings.
Unofficial demarcation proceedings
If the boundary markers of the plot have disappeared, the location of the border is unclear and there may not be a need to use boundary markers (e.g. hedges or fences), the survey team marks the boundaries with wood piles. Upon request, landowners will be provided additional piles to the plot boundary lines as well.
The delivery time for the unofficial demarcation is about 5 business days. The price of unofficial demarcation is determined according to the price list of GIS services. If the location of the border is to be officially marked on the terrain, the remarcation is requested.
The unofficial demarcation is primarily ordered from our online service.
Control points
The information on horizontal and elevation control points of the City of Lahti can be downloaded free from the City of Lahti map service. At the moment, the service is limited to the old Lahti area, and information on the Nastola district is not available.
Soil register
The soil register maintained by the City provides comprehensive information about the soil and constructability in the Lahti area. We deliver soil register data to customers free of charge. Soil register data can be ordered by e-mail: pohjatutkimukset@lahti.fi.