House is wired 568A cat5. Will regular patch cables work?

Yes. The only time this presents a problem is if one end of one cable is A and the other end of the same cable is B.

As long as you have patch cables at both ends you are fine.

I fount this. Cause if you have at the block a A pattern and you use a 568B pattern it'll turn the cable to a crossover cable. I would re-puch the A pattern and covert it to a B pattern. Cause now most people use the 568B pattern.

"What I fount on the internet:
As I said, all premade CAT5e patch cables you buy at a store are 568B. They are not 568A. If you make a home run 568A from a wall jack to the patch panel and use a 568B patch cable [premade bought from a store or dealer] you just created a cross over cable. I've seen it happen where the data cable guys cable the office 568A and the IT guys use premade patch cables and then scratch their heads on why it doesn't work. The contractor says they tested all runs ok, so not their fault, but failed to say they wired the entire office 568A so all those 568B patch cables the IT guys bought won't work.

The pins don't care. If it starts in pin 1-8 and traces all the way through and ends it pin 1-8 it will work.

As long as patch cables that are terminated B at both ends are used it will wire map properly and work properly.

A crossover cable is terminated A on one end and B on the other.

Also, nowadays, 568a and b don't really matter. Any modern switch has auto-sensing ports that will determine if it needs to operate as an uplink port or not. Even a lot of onboard NICs on computers are auto sensing.