When owners ask how long ISO 9001 takes, the honest answer is six to nine months for a company of 20 to 250 people. The more useful answer is where those months go, because very little of it is writing documents.
This is the shape of a real project we ran in 2025 for a precision-parts maker near Porto, 84 people, certified in month seven with no major non-conformities.
Month one is about how you really work
The gap analysis is two days on site and a week of reading. We compare what people actually do with what the standard asks, and rank every gap by the effort it will take to close. The ranking matters more than the list.
The documents are the short part
Procedures, records and the quality manual take about eight weeks if you write only what you need. Teams that copy a template spend longer, because they then have to make the template true.
“The audit felt like a formality because the preparation was that thorough.”
Where projects slip
Three places, in our experience: a management review held too late to act on, internal auditors trained but never practised, and a certification body booked after the system is ready rather than before. Book the audit date in month two.
- Plan six to nine months for one standard
- Rank gaps by effort before writing anything
- Write only the documents you will use
- Book the certification body in month two
If you want to know where your own company would start, the self-assessment on our home page takes three questions.
