We have a farmhouse in Le Marche (Fermo

For you maybe is a madness , but try to tink : one of your guests slides on the steps of the pool, and it hurts very much, the steps are not built according to the building regulations in force = the insurance will not pay....

Dear Claudia, the works you are planning to do are not very clear. You write about "creating a technical area", if this means a new building then you definitely need a geometra who will put in place the building permit at the comune and add the new building to the cadastral plan. As a matter of fact, when building in Italy two offices are involved: the comune that will release the building permit and the land registry (catasto) who will apply taxes.Anyway, I have some very close friends living in Fermo and if you contact me at greta@gretaphlix.com I can arrange a local trustworthy geometra for you to help you out. 

Thanks very much Greta. In fact, the work is underway. We did get a geometra we have used before - when we built a terrace - in the end, more to get the lower tax rate than anything else. The work on the existing pool does not involve building any structure, the pump/filter system will go in a technical area in a hole in the ground. The cadastral footprint is unchanged. I suppose my attitude was shaped by the fact that I trusted the workmen and the pool company to do the work well without needing an extra person involved. The works really are cosmetic and practical rather than radical. I appreciate your offer of help though, thank you again.