Income tax capital gains exemption

OUR CLIENT SOLD ONE RESIDENTIAL HOUSE AND OTHER LONG TERM CAPITAL ASSET OTHER THAN SHARES AND LIABLE TO CAPITAL GAINS TAX U/S.54 & 54F OF THE INCOME TAX ACT,1961. HE WANTS TO GET THE CAPITAL GAINS EXEMPTION BY PURCHASING OR CONSTRUCTING A NEW HOUSE WITH IN THE STIPULATED PERIOD AS PER THE PROVISIONS OF THE INCOME TAX ACT,1961. NOW THE QUESTION IS THAT WHETHER PURCHASE OF ONE NEW HOUSE CAN BE CLAIMED AS EXEMPTION FOR BOTH SEC-54&54F SIMULTANEOUSLY TO THE EXTENT OF THE NEW INVESTMENT. PLEASE SUGGEST ME.