I work for a Fire Service in the United Kingdom, we are required by law to inspect all local structures that could pose a risk if an incident were to occur there. This is usually any industrial complex, school, office, shopping centre, dormitory etc. Individual homes are not included.
As part of the inspection we collect floor plans, details regarding hazardous machinery, dangerous chemicals, gas and water shut-off valves, location of spare keys, contact details for important personnel or anything that would be useful to know.
The quality of these floor plans is typically very good, they are large PDF or CAD files that you can zoom in and out of to get more or less detail. This isn't always the case though, there are some buildings that no floor plans exist.
All of this information is available to the Firefighters in a digital format on a computer placed on the passenger side of the fire appliance, there is also a printer in there if they want to make paper copies.
I don't know if the police do the same but it's entirely possible, it's also not unlikely they would make use of our information if Firefighters and Police are present on the same incident.
Fun fact, because this is a requirement of Section 7, Subsection 2, Part d of the Fire and Rescue Act, we call these files "7(2)d Risk Files"