Compare the content and principles of the assignment before comparing amounts.
What exactly is delivered?
A report, an overview drawing and detailed details are different parts. Also check whether a recording, foundation assessment and coordination with suppliers are included in the price.
What changes are included?
A change due to new wishes may be treated differently than a clarification of the original assignment. Ask how revisions and additional questions are handled.
Compare total costs
Check how VAT, research, drawing work and any urgency are handled. Request a clear total or an overview of items that will be calculated separately later.
Make the assignment comparable before comparing totals
Compare per quotation which interventions, existing parts and drawings are included. Note whether investigation, site visit, revisions and additional questions are calculated separately. Then compare amounts with the same VAT treatment. A low price for just a beam calculation is not directly comparable to an assignment that also includes columns, foundations and implementation details. Missing information should appear as a question in your equation.
Ask for clear limits on additional work
A quotation can be based on a certain design version and an agreed amount of tuning. Ask what happens if your plan changes or a missing piece of data requires additional investigation. Don't just consider the hourly rate, but also the decision moment additional work explain. This way you know when you can expect an additional assignment and what information helps to limit that chance.
Make missing appointments visible
| Part | What are you comparing? | If you are unsure, ask |
|---|---|---|
| Size | Same construction parts | Which parts are outside the assignment? |
| Delivery | Report, drawings and details | What exactly does the executor receive? |
| Research | Recording and additional information | When is additional research necessary? |
| Changes | Revisions and tuning | How is additional work agreed? |
| Price | Same VAT treatment | What is the total including VAT? |
Your preparation in four steps
- Parts of the report
- Drawings and details
- Recording and additional research
- Revisions and guidance
- Total amount and VAT
Frequently asked questions on this topic
What does a structural calculation for a new home include?
A related assignment can concern the foundation, floors, walls, columns, beams and roof. The precise parts and drawings must be agreed. Also ask which supplier calculations are required and who monitors mutual coordination.
When do I involve the structural engineer in new construction?
Preferably during the development of the main concept. Large openings, free spans and installation space can affect the supporting structure. Early coordination makes it clear which choices require further research or elaboration before the design becomes final.
View the associated structural calculation, create your preparation list or take the guides and checklists along to the consultation.