Self-employed builders' campaign
Ratkon Oy offers self-employed builders free building plans (building permit drawings)!
Inspired by the Construction Act that came into effect in 2025, we offer plans for basic functional buildings free of charge. The change in law enables the construction of small yard buildings under 30 m² and roofs of 50 m² without a permit. Projects require qualified designers and supervision, but no permits are required.
If you are considering building something larger, these also serve as an example of our company's quality level.
The permit drawings campaign is valid for the time being, but please contact us if you need the design of load-bearing structures for your project!
Permit verification service
Since building control cannot control construction that is exempt from a permit, it is the builder's responsibility to check that the construction project complies with regulations.
You can order an affordable service from us, which includes:
- Checking distances and placing the building
- Checking fire compartmentation
- Taking into account the plan, building regulations and legislation
- Minimum distances for the wastewater system
The price of the service is 350 euros.
Pre-priced items
Semi-detached house
- the apartments mirror each other
- 4-12 exterior wall corners and 1 residential storey
- structural engineering (RA) 3500
- building design (AR) +1000
Detached house
- 4-8 exterior wall corners and 1 residential storey
- structural engineering (RA) 2000
- building design (AR) +700
Garages and canopies
- 4-6 outer wall corners and 1 storey
- structural engineering (RA) 975
- building design (AR) +400
Expansion packs
- 2nd residential floor +500/detached houses
- 2nd residential floor +800/semi-detached houses
The pre-priced items belong to the usual (T) category in terms of design complexity and structural solutions. Items that are more demanding than this category (V and V+) or require master planning (PS) are always sent through a separate quotation request. Designs (RA or AR) include responsibilities as a person appointed for building supervision.
The structural design includes reinforced concrete cast-in-place foundations, a wooden frame constructed on site or from elements, and a water roof realized with NR roof trusses. Product component design of elements according to the suppliers chosen by the customer.
All prices are in euros and include VAT 25.5 %. Some assignments may entitle you to a household deduction, check it from the tax authority's website .