The input has a few issues: the plot area of 12 sq ft is implausibly small for a mixed-use plot, and the locality is given only as "Chennai," so there is no specific neighborhood to name. The broker's note "Lowest price around in Chennai" is a pricing claim that cannot be verified, and a buyer-facing listing should not repeat it. Rather than publish a description built on a likely data-entry error, I'd recommend the broker confirm the plot area and locality first. Here is a draft using only the facts provided, with the area and locality flagged for verification:

Mixed-use plot for sale in Chennai, Chennai. The plot is listed as a mixed-use category, suitable for buyers considering combined residential and commercial use, subject to local development regulations.

The listed plot area is 12 sq ft. Please verify the area and exact locality before publishing, as the current details are incomplete for a buyer to assess the property.