How to read numbers of the doors on the streets?
In short
In Florence buildings can have two totally different numbers: some of them have numbers in red and some others in black or blue. Red are used for businesses, stores and restaurants and are indicate with an “r” after them (which stands for rosso or red).
Blue and black numbers are for private residences. even number are in one side, uneven on opposite.
Furthermore, following an intersection or curve, streets might suddenly change their names, so keep your eyes open when looking for a specific address to make sure that the street name still corresponds to the one you want.
See also: driving & parking in Florence.
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Why can't I find my apartment? Florence's confusing address system explained
If you've ever walked up and down the same street convinced you'd found the right address — only to end up in front of a restaurant instead of your holiday apartment — welcome to Florence. You're not lost. You've just encountered one of the city's most charming quirks.
Two numbers, two worlds
Florence runs two completely separate numbering systems on the same streets, and they have nothing to do with each other.
Red numbers (marked with a small r after the digits, like 24r) belong to businesses: shops, restaurants, bars, and offices. Black or blue numbers (plain digits, no letter) are for residential buildings and private addresses — including holiday apartments like ours.
So if you're looking for number 14 and you find yourself staring at a pizzeria, that's probably 14r. Your apartment could be just a few steps away — or even next door — but numbered completely independently.
Even and odd: the usual rules apply
Like most Italian cities, even numbers run along one side of the street, odd numbers on the other. That part is straightforward.
Watch out at corners and intersections
Here's where things get a little more adventurous. Streets in Florence can change their name mid-block — sometimes right after a bend or an intersection, with no dramatic announcement. So if you're following your map and the numbers suddenly stop making sense, pause and double-check the street sign. You may have crossed into a new street without realising it.
Our practical tips
Always look for the black or blue number, never the red one
Double-check the exact street name on the building sign, not just on your phone
When in doubt, look for the r — if it's there, it's a business, keep walking
Feel free to contact us directly if you're having trouble: we know Florence well and are happy to guide you in real time
With a little patience (and maybe one extra lap around the block), you'll get the hang of it quickly. And honestly? Getting a little lost in Florence is rarely a bad thing.