Stando alla prefettura, il ricorso è valido.

Here stando a means according to, judging by, or based on what is said by.

So Stando alla prefettura means according to the prefecture.

It is a fixed expression in Italian and is quite common in formal or semi-formal language.

Examples:

• Stando ai giornali, domani pioverà. = According to the newspapers, it will rain tomorrow.
• Stando a Marco, tutto è andato bene. = According to Marco, everything went well.

Yes, stando is the gerund of stare.

However, in this expression, it does not literally mean standing in the English physical sense. Native English speakers often notice the form and try to connect it to physical position, but here that would be misleading.

In stando a, the gerund is part of an idiomatic expression meaning:

• according to
• on the basis of
• if we go by

So it is best to learn stando a as a whole chunk rather than translating stando word by word.

Because stando a is followed by the preposition a, and when a combines with the feminine singular article la, it becomes alla.

Breakdown:

• a
  • la = alla
• prefettura is feminine singular
• therefore: alla prefettura

So:

• stando alla prefettura
• stando al ministro
• stando ai dati
• stando alle testimonianze

Prefettura refers to the office or institution of the prefect, a government authority in Italy. In practice, it often means the local office of the central state administration in a province.

A native English speaker may not have a perfect one-word equivalent in everyday English, so in translation it is often best kept as:

• the prefecture or interpreted more generally as
• the prefect’s office
• the local prefectural authority

In this sentence, it refers to an official institution giving an opinion or assessment.

Yes. Secondo la prefettura is very natural and means almost the same thing.

Comparison:

• Stando alla prefettura = according to the prefecture, going by what the prefecture says
• Secondo la prefettura = according to the prefecture

In many contexts they are interchangeable. However, stando a can sound slightly more like if we rely on that source or based on that source.

So both are correct:

• Stando alla prefettura, il ricorso è valido.
• Secondo la prefettura, il ricorso è valido.

Ricorso often means a legal appeal, petition, application for review, or formal challenge, depending on context.

It is a legal or administrative term, so the exact English translation depends on the situation:

• in court: appeal
• in administrative law: appeal, petition, or challenge
• more broadly: recourse is possible in some contexts, but usually not the best choice in this kind of sentence

Here, il ricorso è valido most likely means that the appeal or legal challenge is considered valid or admissible.

Yes, valido here is very close to English valid.

In legal or administrative contexts, it can mean:

• legally valid
• acceptable
• effective
• admissible

So il ricorso è valido means the appeal/challenge is recognized as valid.

Also note the agreement:

• ricorso is masculine singular
• so the adjective is valido

If the noun were feminine singular:

• la richiesta è valida

The comma separates the introductory phrase from the main clause.

Structure:

• Stando alla prefettura = introductory element
• il ricorso è valido = main statement

This is very common in both Italian and English:

• According to the prefecture, the appeal is valid.

The comma helps readability and makes the sentence feel more natural.

Yes, somewhat.

The given order is very natural:

• Stando alla prefettura, il ricorso è valido.

You could also say:

• Il ricorso è valido, stando alla prefettura.

That version is also correct, but it may sound a little more marked or stylistic. The sentence-initial position is usually the most straightforward for this kind of source phrase.

It is fairly neutral to formal. You will often see it in:

• news reports
• official writing
• legal or administrative contexts
• more careful spoken Italian

Because this sentence contains words like prefettura and ricorso, the overall register is quite formal anyway, and stando a fits that tone well.

In everyday conversation, people might more often use:

• secondo
• a quanto dice...
• da quello che dice...

No. It can be used with many kinds of sources, including:

• people
• documents
• reports
• data
• appearances

Examples:

• Stando a Luca, non ci sono problemi. = According to Luca, there are no problems.
• Stando ai dati, l’economia sta migliorando. = According to the data, the economy is improving.
• Stando al rapporto, la situazione è critica. = According to the report, the situation is critical.

So in your sentence, alla prefettura is just the source of the information.

Yes. The whole sentence is complete because the main clause has a finite verb:

• il ricorso è valido

The part stando alla prefettura is an introductory gerund phrase. Italian often uses gerund phrases this way to add background information such as:

• cause
• manner
• condition
• source of information

So although stando alla prefettura is not a full independent clause by itself, the complete sentence is perfectly grammatical.