0000927016-99-002348 S-3 4 19990611 BOSTON PROPERTIES INC 0001037540 6500 042473675 DE 1231 S-3 33 333-80513 99645035 800 BOYLSTON STREET SUITE 400 BOSTON MA 02199 6172363300 800 BOYLSTON STREET SUITE 400 BOSTON MA 02199 S-3 1 000092701699002348-001-seq1-s-3.txt FORM S-3 EX-5.1 2 000092701699002348-002-seq2-ex-5-1.txt OPINION OF GOODWIN, PROCTOR & HOAR, LLP EX-23.1 3 000092701699002348-003-seq3-ex-23-1.txt CONSENT OF PRICEWATERHOUSECOOPERS LLP EX-99.1 4 000092701699002348-004-seq4-ex-99-1.txt REGISTRATION RIGHTS