San Francisco condominium prices rose 18 percent in December 2013 over the previous year, according to the Condominium Pricing Index released today by The Mark Company, a leading urban residential marketing and sales firm.

The Mark Company Condominium Pricing Index for December was $1,034 per square foot, which is up 2 percent from November. New construction inventory was 78 percent lower than a year ago, and down 26 percent from the previous month, with 92 units currently available.

“With fewer than 100 new condominiums now for sale in San Francisco, price appreciation is likely to continue in 2014,” states Erin Kennelly, senior director of research, The Mark Company.

The Condominium Pricing Index, part of the firm’s monthly Trend Sheet (available at www.themarkcompany.com), represents the price per square foot of a new 10th floor, 1,000-square-foot condominium. It is based on recent sales data, and uses a proprietary quantitative method to measure trends in market demand. It tracks the value of a new construction condominium without the volatility of inventory changes.

The Mark Company Penthouse Pricing Index, which applies the same methodology to a new 30th floor, 2,000-square-foot condominium, was $1,776 per square foot, up 18 percent year over year.

The condominium price per square foot was $868 for resales, up 26 percent over December 2012, according to The Mark Company Trend Sheet for San Francisco. In addition, there were 229 condominium resales in San Francisco in December, 134 active condominium listings representing less than one month of inventory, and 123 pending condominium units, the Trend Sheet found.

That’s some pretty insane growth and is not surprising. Thanks Mark Company for the info.