BUZZ-UK housebuilders: Choppy trading on stamp tax reforms, Berkeley Group lags

** UK housebuilders lifted as UK Finance Minister Osborneannounces reform to stamp duty land tax

** Initial headlines on cuts to stamp duty lifts sector butgains pared back as details emerge.

** Taxes to go up for homes worth more than 937,000pounds($1.47 mln)

** London-focused Berkeley Group the clearunderperformer, down 2.2 pct, only FTSE350 homebuilderin the red.

** FTSE350 homebuilders index impact: http://link.reuters.com/qax53w

** Barratt Developments up 1 pct, Bovis Homes up 1.9 pct.

** Estate agent Countrywide & property websiteZoopla that have struggled since going public see arelief rally with shares up 2.5 pct and 3.8 pct respectively.

(1 US dollar = 0.6376 British pound) (RM: tricia.wright1.thomsonreuters.com@reuters.net)