Manhattan townhouse price trend indicators set records in 2015, as sales fell short of the prior year total. Median sales price jumped 28% to $5,250,000, a record and the first time it exceeded the $5 million threshold. Average price per square foot increased 10.7% over the same period to a record of $1,733. Sales declined 7.2% to 298 from the prior year, but was 15.5% above decade average of 258. Townhouse sales are a fixed form of housing stock with low acceptance of ground up new construction…