Table 1: Bay Area Land Use Change Frequencies by County and Type: 1985-1995.
Frequencies: Hectares of VACANT Land Use Change
County	Vacant > Single-family		Vacant > Apartments		Vacant > Commercial		Vacant > Industrial		Remain Vacant		All Vacant Sites
	#	% of total	#	% of total	#	% of total	#	% of total	#	% of total	#	% of total
Alameda	1,981	2.61%	82	0.11%	933	1.23%	410	0.54%	72,524	95.51%	75,930	100.0%
Contra Costa	4,226	5.25%	77	0.10%	218	0.27%	49	0.06%	75,982	94.33%	80,552	100.0%
Marin	265	0.94%	0	0.00%	51	0.18%	1	0.00%	28,009	98.88%	28,326	100.0%
Napa	266	0.69%	4	0.01%	66	0.17%	23	0.06%	38,450	99.07%	38,809	100.0%
San Mateo	330	0.98%	12	0.04%	151	0.45%	14	0.04%	33,334	98.50%	33,841	100.0%
Santa Clara	2,301	1.96%	29	0.02%	995	0.85%	303	0.26%	113,837	96.91%	117,465	100.0%
Solano	2,537	1.98%	16	0.01%	313	0.24%	295	0.23%	124,792	97.53%	127,953	100.0%
Sonoma	3,330	1.66%	43	0.02%	297	0.15%	293	0.15%	197,048	98.03%	201,011	100.0%
Frequencies: Hectares of DEVELOPED Land Use Change
County	Redevelop to Residential				Redevelop. to Commercial		Redevelop. to Industrial		No Change		All Developed Sites
	#		% of total		#	% of total	#	% of total	#	% of total	#	% of total
Alameda	2,096		4.85%		138	0.32%	25	0.06%	40,975	94.77%	43,234	100.0%
Contra Costa	1,383		3.35%		116	0.28%	11	0.03%	39,745	96.34%	41,255	100.0%
Marin	13		0.14%		1	0.01%	na	na	9,376	99.85%	9,390	100.0%
Napa	179		3.80%		38	0.81%	24	0.51%	4,472	94.89%	4,713	100.0%
San Mateo	916		3.62%		50	0.20%	15	0.06%	24,310	96.12%	25,291	100.0%
Santa Clara	2,340		4.02%		500	0.86%	71	0.12%	55,358	95.00%	58,269	100.0%
Solano	332		2.34%		35	0.25%	8	0.06%	13,783	97.53%	14,158	100.0%
Sonoma	560		1.94%		127	0.44%	48	0.17%	28,179	97.46%	28,914	100.0%