A landowner purchased a 1045 sq ft plot from a larger 3300 sq ft parcel that was divided into three. Despite having a separate survey number and Patta, they were asked for subdivision plan approval by the DTCP for construction. Another buyer of a portion of the land received approval during registration. The landowner is questioning if subdivision approval is mandatory for construction or sale, and if the quoted fee of approximately 90,000 rupees is accurate for the Guduvanchery area. Advice suggests that DTCP fees vary by state, and in Tamil Nadu, they might be significantly lower, with a potential need for land conversion from agricultural use first.