The cost of standard plumbing depends on the size of the home. A bigger home will require more plumbing and will, therefore, cost more. You will spend less for plumbing in a smaller home.
You have given us NO parameters to know what needs to be updated , or to what standard.
Yes, the European union has a plumbing standard.
The standard water line size for residential plumbing installations is typically 3/4 inch in diameter.
The standard faucet thread sizes used in plumbing fixtures are 1/2 inch and 3/4 inch.
The standard faucet supply line size for most residential plumbing installations is 1/2 inch.
The standard faucet connector sizes used for plumbing installations are typically 1/2 inch and 3/8 inch.
It was called a gutter back then.
The standard height for a washer trap in a residential plumbing system is typically around 6-8 inches above the floor level.
The standard kitchen drain pipe size for residential plumbing systems is typically 1 1/2 inches in diameter.
The standard size of a 2-inch P-trap used in plumbing installations is typically 2 inches in diameter.
Yes, it will. Almost all mobile home plumbing is standard.