ISO 27001 technical audit
Technical focus on controls, logging and access model.
Estimated investment
EUR 23,100
Range: EUR 12,600 – 34,300
Assumptions used in this scenario
- Cloud + on-prem
- SIEM review
- Retest
- 6 weeks
FAQ for this example
How realistic is the range for "ISO 27001 technical audit"?
The range is based on typical delivery patterns and serves as a solid first estimate for budgeting and prioritization.
Which factors shift the estimate most?
Main impacts are integration depth, quality targets, data readiness and target timeline.
What should I do after reviewing this example?
Validate assumptions in a short briefing and convert them into a concrete implementation and budget path.
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All examples: Examples for security-audit.
Typical pricing models (overview)
| Model | When it fits | Budget & flexibility | Typical risks |
|---|---|---|---|
| Fixed price (fixed scope) | Clearly defined scope, stable requirements, repeatable delivery. | Predictable total cost; little room for change without a change order. | Scope creep leads to change orders or quality trade-offs. |
| Time & Material | Discovery, legacy, evolving requirements, or close collaboration. | Maximum flexibility; budget transparent via hourly or daily rates. | Without prioritisation, effort can grow—backlog and reviews matter. |
| Retainer / maintenance package | Ongoing operations, updates, small features, and support. | Agreed capacity per month; predictable follow-on cost. | Large changes may still need a separate estimate. |
| Hybrid (milestone + T&M) | MVP or phased releases with clear go-lives, then iterate. | Core delivery fixed price; extensions on a time-and-materials basis. | Define contractually what is in scope vs. extra work. |
Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.
Costs & next steps
The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.
Browse all cost calculators, explore services and typical solutions. Questions about Security Audit? Contact us.
The calculator result for Security Audit is indicative only – a binding budget follows scope alignment, data review, and quality targets.
Plan follow-on costs
- Operations and maintenance separate from the initial build
- Internal key users and training
- Monitoring and support after go-live
Next steps after the calculator
- Intro call: funding and phased delivery
- Discovery, pilot, or rollout matched to risk
- Documented assumptions and exclusions in the quote
Compare related calculators in the costs hub for edge cases (integrations, compliance, parallel run).