Most are not but there are thousands of species. In North America, generally it's only the easily recognized black widow and rare brown recluse or it's cousins which you have to worry about. House spider is a generic term for common Spiders found in homes (multi species) of these only the hobo is dangerous but is only found in some states. House is commonly used to identify it as well. see below
yes
Katipo
It's probably a black widow and yes very poisonous.
There aren't any poisonous spiders in the UK, except in captivity.
well ya it has poision in its name
no!
NO
obviously
Yes, have you ever found a spider or tick in your home?
No.
That is 'poisonous' .
Yes.