Looking to re locate from england

with an EU passport you come and go as often as you wish no need for residency unless you exceed the 183 days for tax purposes.

Thanks so could i stay for 180 days on the trot&return to uk for other 180 days??

you need to be careful of the tax year in Spain which runs from Jan 1st to Dec 31st.  183 days in that period and you become a tax resident and liable for tax on all your income worldwide. 

Even if only using it as a holiday home so wont be staying over 183 days?

Vera, just to confirm a few things:

1. With an EU (Irish?) passport, you are not restricted to 90 / 180 - you have freedom of movement which means you can arrive and settle in any EU country.
   
2. If you stay longer than 90 days, you are obliged to register as a resident.  This is the same in EVERY EU country.  In Spain, this is Residencia.  It’s never been strictly enforced here in Spain and failure to do so is at worst an administrative offence and a fine.  IF it’s enforced.  There were plenty of Brits who flew “under the radar”, never taking Residencia and nothing happened to them - well, nothing until Brexit, that is.
3. Once you DO register and take Residencia, you are a “temporary resident” for five years.  To maintain your residency, you are obliged to spend a minimum of 183 days a year in Spain to comply with the requirement of continuous residency. (After 5 years continuous legal residency, you become a permanent resident and can spend up to 2 years uninterrupted outside Spain.)
4. 183 days is the threshold for tax residency.
5. Therefore, once you take Residencia, you will by necessity also become tax resident

Hi and thank you so much for that information. I do want to apply for residency and will use the home i buy for 1st year to familarise myself with what will be my new life. Hurry up Passport🤣