Room for your plans.
Confidence in the structure.
Removing a load-bearing wall, extension or roof structure? Start with a clear constructive plan for your renovation.
Extension · calculationFrom €797.39 incl. VAT€659.00 excl. VATFor every renovation
a strong foundation.
Load-bearing wall · calculationFrom €506.99 incl. VAT€419.00 excl. VATRemove load-bearing wall
Make room for an open layout. First determine how the load on the existing wall will be absorbed.
BreakthroughView this calculation →
Extension · calculationFrom €797.39 incl. VAT€659.00 excl. VATNew extension
Additional living space starts with the connection to your existing home. Bring foundation, roof and breakthrough together in one plan.
ExpansionView this calculation →
Rooftop addition · calculationFrom €761.09 incl. VAT€629.00 excl. VATAdditional rooftop storey
Use the space above your home. First investigate what the existing floors, walls and foundation can support.
ExpansionView this calculation →
Foundations · calculationFrom €869.99 incl. VAT€719.00 excl. VATFoundations
A substructure that matches the building and the soil. For new construction, expansion and structural adjustments.
SubstructureView this calculation →
Structural calculationPrice on requestSolar PV panels
Visualize the extra weight, mounting and the influence of wind on your roof.
RoofView this calculation →
Indication of property · on request€3,630–€5,445 incl. VAT€3,000.00–€4,500.00 excl. VATHouse and new construction
A coherent structural design for foundation, floors, walls and roof.
New constructionView this calculation →
You have a plan.
We make the next step clear.
Who do you engage? Which drawings are needed? And when does the structural engineer come into the picture? Follow the process step by step.
- 1Collect your wishes and drawings
Visualize the existing building and your plans.
- 2Coordinate design and calculation
Connect the construction to the architectural plan.
- 3Prepare the execution
Work with current documents and clear agreements.
From questions to
a clear construction plan.
The project guide
Choose your renovation and receive an overview of documents and questions for your conversation.
Get started →02 / WELL PREPAREDYour renovation budget
Add up your own budget items and explore what a reserve does to your total.
Get started →03 / WELL PREPAREDYour construction planning
Arrange the phases of your project one after the other and download your own timeline.
Get started →Understand your renovation.
Make better choices.
From an unknown construction term to the right choice of materials. Find the explanation that suits your next step.
The construction dictionary
From anchor to setting. Construction terms clearly explained, with links to the relevant topic.
322 terms · searchableThe materials guide
Steel, wood, concrete and everything that comes with it. View points of interest and a list per project.
7 material categoriesArchitecture & drawings
Who does what? Discover the difference between a sketch, architectural drawing and construction drawing.
From design to detailsA good start
is knowing what you are paying attention to.
How do you recognize a load-bearing wall?
Drawings and architectural features provide indications, but together with research determine the assessment.
Preparing a roof structure
An extra floor requires coordination of design, existing construction and implementation.
Read construction drawings
Scale, dimensions, symbols, and revisions help you understand the drawing set.
Answer in advance
to your first questions.
Is your question not listed? Please contact us to discuss your own situation.
Discuss your question →When do I hire a structural engineer?
Preferably as soon as you consider a constructive change. This way, the supporting structure can already be included in the design phase.
What data can I provide?
A project description, available drawings and photos are a good start. Additional information depends on the renovation.
Can I also start without construction drawings?
You can discuss your question in advance. The structural engineer determines what information is missing and whether a recording or investigation is necessary.
How much does a structural calculation cost?
That depends on the components, available data and required elaboration. Request a quote that clearly states the content, planning and total costs.
Are a calculation and drawing the same?
No. The calculation substantiates the structural design. The drawing shows the location, dimensions and connections of the construction parts.
What does your calculation cost?
| Structural calculation | Including 21% VAT | Excluding VAT |
|---|---|---|
| Load-bearing wall | From €506.99 incl. VAT | €419.00 excl. VAT |
| New extension | From €797.39 incl. VAT | €659.00 excl. VAT |
| Foundations | From €869.99 incl. VAT | €719.00 excl. VAT |
| Additional rooftop storey | From €761.09 incl. VAT | €629.00 excl. VAT |
| House | On request · indication €3,630.00–€5,445.00 incl. VAT | €3,000.00–€4,500.00 excl. VAT |
| Other calculations | From €337.59 incl. VAT | €279.00 excl. VAT |
The original starting prices exclude VAT. Amounts including 21% VAT are shown first, with the amount excluding VAT alongside. The quotation specifies the final total and included work. The “other” category is not a fixed rate for every other service.
All types of structural calculations.
Explore ten categories: construction projects, materials, connections and engineering controls.
Breakthroughs and existing homes
In the event of a breakthrough, the route along which loads are transferred to the foundation changes. The assessment therefore looks beyond the new beam: the supports, remaining walls and construction underneath also count.
Extensions and outbuildings
An extension adds new loads and often connects to an existing facade. The roof, supporting structure and foundation together form the design. The connection with the main building deserves attention, even when the outbuilding is small.
Roofs and roof extensions
A roof calculation can concern the load-bearing beams, but also a new opening, extra weight or another use. In the case of a roof structure, the load must also be able to be transferred through the existing home to the foundation.
Floors, stairs and balconies
For floors, both load-bearing capacity and usability count. A floor that is sufficiently strong can still bend too much or vibrate annoyingly. Openings, heavier use and new supports change the principles.
Foundations and earth retaining structures
The foundation connects the structure to the ground. Structural calculations and geotechnical investigations must therefore be based on the same loads, heights and soil data. Groundwater and the environment also play a role in soil retaining.
Complete buildings and transformations
In a complete building, the relationship between the roof, floors, walls, columns and foundation is designed. The use, layout and construction method together determine the calculation principles. Transformation involves an assessment of the existing situation.
Calculations per construction material
The material determines how a part absorbs forces and deforms. The same span does not automatically lead to the same solution with wood, steel or concrete. Connections, sustainability, fire and the chosen construction method are part of the consideration.
Connections and fixings
The forces in a structure must be able to be transferred from one part to the next. A connection is therefore assessed together with the connected materials and the substrate. The number of bolts or anchors alone does not say enough.
Technical checks within a calculation
A structural calculation usually consists of several checks. Which checks are required depends on the structure, material, use and the relevant loads. These topics are therefore not automatically ten separate assignments.
Temporary, industrial and civil constructions
These specialist topics require experience with the relevant construction type and the use or implementation situation. This overview helps to formulate a question. Discuss in advance which expert can carry out the design, assessment and coordination.
From beam selection to concrete pouring.
Structural systems: from load-bearing walls to trusses and shells
Discover the most important supporting systems, materials and construction methods. One building often combines several construction types.
Casting concrete pad footings: preparation and steps
A concrete footing transfers a concentrated load. Its dimensions, reinforcement, anchors and founding conditions follow from the design for your project.
Beam types and load-bearing capacity: steel, timber and concrete
A beam does not have a fixed load capacity based on its type alone. Profile, material, span, support points and load together determine the outcome.