I did the lounge & playroom - 2010, when I extended to gain the playroom.
Previously painted 2002 soon after we moved in.
Kitchen, utility and conservatory - 2019, when I had a new kitchen fitted. Kitchen previously painted around 2003 due to conservatory being added and some units moved, dwarf walls in conservatory every few years, utility was still builders magnolia from 1998 house construction.
Dining room - previous owners did and not changed since we brought in 2001.
Downstairs loo - around 2010.
Hall, stairs & landing - probably around 2002, and then I redid the hall & landing plus as far up the stairs as I could reach in 2010 with the same paint.
My bedroom - around 2002/3.
Ensuite - ceiling done every few years as the paint flakes, walls 2002.
Spare room - did the woodwork and ceiling when furloughed in April 2020 but didn't have wall paint due to lockdown and have never got round to finishing it (still builders magnolia).
Dc1 room - 2002 while pregnant with him.
Dc2 room - still builders magnolia.
Main bathroom - previous owners did and not changed since we brought in 2001.
And yes, with the exception of the kitchen & utility, it could all do with refreshing.