For non-residential construction (NAICS 2362), average AR days totaled 61.6, compared with 56 in 2010.
Other industries listed among the slowest-growing include dry cleaners (NAICS 8123) and funeral homes (NAICS 8122).
Of the other building-related categories, professionals providing architectural, surveying and engineering services (NAICS 5413) have seen 15 percent growth.
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Stores selling lawn and garden equipment and supplies (NAICS code 4442) saw a sales increase of about 5 percent.
Private retailers including these categories (NAICS 4511) have posted 9 percent sales growth over the last 12 months and in 2011.
Sageworks reviewed companies falling under the NAICS code 5415 and found they have generated an 11 percent sales increase so far this year.
Sageworks data has also shown that private residential construction companies (NAICS code 2361) tallied a 5.3 percent increase in sales in 2011.
Building equipment contractors (NAICS code 2382) this year have collected payments in about 57 days, on average, which is pretty consistent with recent years.
But net profit margins among privately owned jewelry stores (NAICS 44831) are actually lower than in 2002, according to an analysis by Sageworks, a financial information company.
FORBES: High gold prices took the shine off jewelry stores' margins
Electronics and appliance stores (NAICS code 4431) over the last 12 months have generated around 16 percent sales growth, and net profit margins have strengthened to 4.44 percent.
On average, private wholesalers of construction, mining, farm and industrial equipment (NAICS 4238) saw sales increase nearly 15 percent in 2011, compared with about 13 percent in 2010.
Overall, accounts receivable days for the residential building construction industry (NAICS code 2361) were an average of 21.6 days in 2011, compared with 15.8 days in 2010, Sageworks found.
Sageworks reviewed private companies falling under the NAICS code 5415 and found that providers of IT expertise have experienced nearly 20 percent sales growth in the last 12 months.
Architectural, engineering and related services (NAICS code 5413) companies have also seen a notable increase in AR days, with collections stretched to an average 73 days from 60 last year.
The Central Contractor Registry (www.ccr.gov) has it registered as a news syndicate (NAICS code 519110), which is defined by NAICS as establishments who sell information to the news media.
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Sageworks, a financial information company, analyzed gross margins and cost of sales, or cost of goods sold, for privately owned clothing stores (NAICS code 4481) between 2007 and Oct. 18.
Only one industry in the bottom 10 ranking saw a sales decline, and that was land subdivision (NAICS 2372), which includes companies that subdivide and prepare land for subsequent sale to builders.
An analysis of financial statements from privately held building material and supplies dealers (NAICS 4441) shows that sales are rebounding a little after three back-to-back years of declines between 2007 and 2009.
Schaefer noted that increasing reliance of U.S. companies on computers could have contributed to the nearly 18 percent growth experienced by computer systems design and related services (NAICS 5415) over the last 12 months.
Our technology industry component covers 11 six-digit NAICS sectors covering information industries such as software publishing, Internet publishing, data processing, and tech-related business services such as computer systems design, custom programming, engineering services, and research and development.
FORBES: Methodology For Forbes' Best Cities For Tech Jobs List
Privately held dentist offices (NAICS code 6212) have seen sales so far this year decline about 3 percent after posting ongoing-though-shrinking gains in their top lines throughout the recent recession, Sageworks found in an analysis of the industry.
This step moves us closer to meeting the recent Jobs Council recommendation to enable regulations to be searched by North American Industry Classification System (NAICS) codes, (NAICS is a standard used by Federal agencies in classifying industry).
The numbers were combined to find an overall rating of employee happiness for each respondent, and then they were sorted by field to find the six happiest and six unhappiest industries (as defined by the North American Industry Classification System ( NAICS)).
FORBES: The Happiest And Unhappiest Industries To Work In Right Now
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