23-21 Private Buildings with Consent to Commence Work by Type of Building
Year	Residential		Residential/Commercial			Commercial
	Number	Usable Floor	Number	Usable Floor Area		Number	Usable Floor
	of Blocks	Area	of Blocks	(10 000 sq.m.)		of Blocks	Area
	(number)	(10 000 sq.m.)①	(number)	Residential	Non-residential	(number)	(10 000 sq.m.)
2006
First submission	359	9.2	28	23.4	2.1	11	16.6
Major revision	99	12.0	36	21.2	2.6	9	25.5
2007
First submission	168	45.3	18	13.1	3.1	11	15.4
Major revision	805	16.7	21	14.6	4.7	12	9.5
2008
First submission	146	27.1	25	12.1	2.2	9	10.4
Major revision	80	5.5	11	7.9	2.2
2009
First submission	181	20.4	42	15.1	3.1	10	13.2
Major revision	158	11.1	9	7.2	1.5
Notes: ①Including usable floor area in residential buildings for non-domestic use, such as club house/recreational facilities, caretakers’
office/quarters transformer room, etc.