The property with a gallery after, again, some beers (4,6)
I believe the answer is:
real estate
'the property' is the definition.
(real estate is a kind of property)
'gallery after again some beers' is the wordplay.
'gallery' becomes 'tate' (Tate Modern, Tate Britain etc).
'after' says to put letters next to each other.
'again' becomes 're' (prefix meaning 'again').
'some beers' becomes 'ales' (I've seen this before).
're'+'ales'='reales'
'tate' after 'reales' is 'REAL ESTATE'.
'with a' acts as a link.
(Other definitions for real estate that I've seen before include "land in New England" , "Land in America" , "Land (mainly US)" , "Property, land (esp. US)" , "Landed property" .)