How much do structural calculations cost?
Clear starting prices, a defined brief and advance agreement on the work your project requires.
| Project | Starting price | Basis |
|---|---|---|
| Load-bearing wall removal | From €399 | Assessment of load transfer |
| House extension | From €699 | Structural design of the agreed extension |
| Room extension | From €699 | Coordination between the extension and existing home |
| Additional storey | From €699 | Analysis of the agreed load path |
| Dormer | From €399 | Assessment of the roof alteration |
| Foundations | On request | Foundation design within the agreed scope |
| Steel structure | On request | Calculations for the agreed steel elements |
| External wall opening | On request | Calculations for the replacement structural concept |
| Floor | On request | Calculations for the agreed floor elements |
| Timber floor joists | On request | Assessment of the agreed timber floor |
| Stair opening | From €299 | Calculations for the trimming structure within scope |
| Roof terrace | On request | Assessment of the load-bearing structure within scope |
| Canopy | On request | Calculations for the agreed roof and supporting structure |
| Solar panels | On request | Assessment of the agreed roof elements |
| House | On request | Structural design as commissioned |
| Garage | On request | Calculations for load-bearing elements |
| Outbuilding | On request | Structural design of the agreed elements |
| New build | On request | Structural design for the stages stated in the quotation |
| Renovation | On request | Assessment of the agreed alterations |
| Other structural calculations | On request | Assessment of the information |
| Carport | From €399 | Calculations for the agreed load-bearing structure |
| Bay window | From €399 | Calculations for the agreed load-bearing elements |
| Chimney breast removal | From €399 | Assessment of the agreed existing situation |
Our own starting prices for straightforward briefs with sufficient information. Construction work and materials are excluded. Prices dated October 2026.
What is included?
- Information review for the agreed brief
- Calculations for the specified structural elements
- An associated structural drawing within scope
- Internal review of the documents prepared
- Approval guarantee subject to terms
When are there additional costs?
- Investigations, cone penetration testing or a site survey
- Missing information and extensive archive research
- Additional structural elements outside the original brief
- New options or changes after work starts
- Additional architectural or supplier work
Extra work is discussed beforehand. No automatic surcharge without agreement.
What is the starting point for your project?
This calculator provides commercial guidance. It does not calculate structural dimensions or loads. Additional work is quoted separately.
The same service, a different brief.
One clearly defined wall opening
Complete drawings and straightforward, defined calculations for a load-bearing wall: starting from €399.
The final quotation specifies exactly which bearings and elements are included.
An extension with a wall opening
An extension starts from €699. An additional external wall opening is not automatically included in that base price.
The combination is assessed and quoted as a whole.
Unknown existing structure
Drawings are missing or actual conditions differ. The required information or investigations are established first.
Investigation costs are agreed before the work is carried out.
A structural plan.
Clear answers to follow-up questions.
If the municipality requests additional structural information about our calculations within the original brief, we provide that information within the agreed scope at no additional professional fee.
The municipality makes the permit decision.
What you want to know in advance.
How does a starting price work?
A starting price is the base amount for a straightforward, clearly defined brief with sufficient information. You receive a quotation in advance stating the final total price, included work and any additions to be agreed separately.
What exactly will I receive?
Your quotation specifies this. The usual package includes calculations for the agreed elements and an associated structural drawing. Architectural drawings, supplier detail calculations and site supervision are included only when explicitly stated.
What does the approval guarantee cover?
If the municipality requests additional information about our calculations within the original brief, we provide it within the agreed scope at no additional professional fee. This does not guarantee a permit. Read the terms on the guarantee page.
From renovation idea to structural plan.
Tell us what you want to change. Upload drawings or photos and receive a quotation suited to your project.