UNION COUNTY — The number of building permits issued for commercial and industrial construction in Union County increased slightly between 2011 and 2012 while the number of permits issued for single-family dwellings decreased slightly according to the Catawba Regional Council of Governments.

Since 1996, the CRCG has maintained a building permit tracking system for the four counties — Chester, Lancaster, Union, and York — that make up the Catawba Region. This week the CRCG issued a synopsis of permit activity in those counties between 2011 and 2012. The synopsis states that analysis of the data by CRCG staff shows that all of the region’s counties except Union experienced an increase in the number of single-family dwellings.

In Union County, the number of permits issued for single-family dwellings decreased from 15 in 2011 to 14 in 2012. In Chester, Lancaster, and York counties the number of permits issued for single-family dwellings increased from 29 to 30, 527 to 747, and 820 to 1,070, respectively.

No permits for multi-family dwellings were issued in either Chester and Union counties in 2012, the same as in 2011. One permit was issued in Lancaster County, up from none in 2011. The number of permits for multi-family dwellings in York County increased from seven in 2011 to 12 in 2012.

The number of mobile home permits issued in Chester, Union, and York counties decreased between 2011 and 2012, dropping from 22 to 12, 28 to 26, and 69 to 52, respectively. Lancaster County saw the number of permits issued for mobile homes increase from one in 2011 to seven in 2012.

Union County saw the number of permits issued for commercial development double from one in 2011 to two 2012 while Chester County’s tripled from one to three. In Lancaster County, the number of permits issued for commercial development increased from 17 to 26 while York County’s total dropped by two-thirds from 163 to 54.

One industrial permit was issued in Union County in 2012, up from none in 2011. Chester County’s total fell from one in 2011 to none in 2012 while Lancaster County issued no industrial permits in either year. The number of industrial permits issued in York County fell from 15 to 11.